./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:36:37,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:36:37,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:36:37,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:36:37,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:36:37,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:36:37,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:36:37,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:36:37,867 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:36:37,870 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:36:37,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:36:37,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:36:37,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:36:37,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:36:37,871 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:36:37,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:36:37,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:36:37,872 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:36:37,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:36:37,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:36:37,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:36:37,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:36:37,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:36:37,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:36:37,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:36:37,874 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:36:37,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:36:37,875 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:36:37,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:36:37,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:36:37,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:36:37,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:36:37,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:36:37,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:36:37,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:36:37,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:36:37,878 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:36:37,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:36:37,878 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:36:37,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:36:37,878 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:36:37,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:36:37,879 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 [2024-10-11 14:36:38,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:36:38,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:36:38,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:36:38,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:36:38,128 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:36:38,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-10-11 14:36:39,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:36:39,554 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:36:39,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-10-11 14:36:39,563 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3efba860e/a1659031afca40afa41b903025abbcc0/FLAGb58ae65b0 [2024-10-11 14:36:39,574 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3efba860e/a1659031afca40afa41b903025abbcc0 [2024-10-11 14:36:39,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:36:39,577 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:36:39,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:36:39,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:36:39,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:36:39,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7578738b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39, skipping insertion in model container [2024-10-11 14:36:39,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,621 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:36:39,790 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c[2031,2044] [2024-10-11 14:36:39,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:36:39,801 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:36:39,817 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c[2031,2044] [2024-10-11 14:36:39,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:36:39,836 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:36:39,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39 WrapperNode [2024-10-11 14:36:39,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:36:39,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:36:39,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:36:39,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:36:39,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,865 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2024-10-11 14:36:39,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:36:39,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:36:39,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:36:39,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:36:39,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,875 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,888 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]. [2024-10-11 14:36:39,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:36:39,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:36:39,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:36:39,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:36:39,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (1/1) ... [2024-10-11 14:36:39,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:36:39,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:39,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:36:39,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:36:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:36:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:36:39,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:36:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:36:39,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:36:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:36:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:36:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:36:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:36:39,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:36:39,985 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:36:40,060 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:36:40,062 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:36:40,165 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:36:40,166 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:36:40,252 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:36:40,252 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 14:36:40,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:40 BoogieIcfgContainer [2024-10-11 14:36:40,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:36:40,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:36:40,255 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:36:40,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:36:40,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:36:39" (1/3) ... [2024-10-11 14:36:40,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17afab4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:36:40, skipping insertion in model container [2024-10-11 14:36:40,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:39" (2/3) ... [2024-10-11 14:36:40,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17afab4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:36:40, skipping insertion in model container [2024-10-11 14:36:40,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:40" (3/3) ... [2024-10-11 14:36:40,259 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-10-11 14:36:40,271 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:36:40,271 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:36:40,272 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:36:40,305 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 14:36:40,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-10-11 14:36:40,360 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-10-11 14:36:40,361 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:36:40,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-10-11 14:36:40,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-10-11 14:36:40,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-10-11 14:36:40,375 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:36:40,380 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@3aaa3bab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:36:40,381 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-11 14:36:40,389 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:36:40,395 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-11 14:36:40,395 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:36:40,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:40,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:40,396 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:40,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash 787521427, now seen corresponding path program 1 times [2024-10-11 14:36:40,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:40,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862612630] [2024-10-11 14:36:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:40,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:40,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:40,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862612630] [2024-10-11 14:36:40,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862612630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:40,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:40,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:40,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008813028] [2024-10-11 14:36:40,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:40,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:40,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:40,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:40,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:40,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:40,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:40,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:40,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:41,210 INFO L124 PetriNetUnfolderBase]: 111/201 cut-off events. [2024-10-11 14:36:41,210 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-11 14:36:41,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 201 events. 111/201 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 599 event pairs, 2 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 364. Up to 57 conditions per place. [2024-10-11 14:36:41,213 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 40 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2024-10-11 14:36:41,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 61 transitions, 278 flow [2024-10-11 14:36:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-10-11 14:36:41,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-11 14:36:41,224 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 9 states and 88 transitions. [2024-10-11 14:36:41,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 61 transitions, 278 flow [2024-10-11 14:36:41,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:36:41,230 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 107 flow [2024-10-11 14:36:41,231 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-10-11 14:36:41,234 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2024-10-11 14:36:41,234 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 107 flow [2024-10-11 14:36:41,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:41,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:41,234 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:41,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:36:41,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:41,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:41,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1106912063, now seen corresponding path program 2 times [2024-10-11 14:36:41,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:41,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218659497] [2024-10-11 14:36:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:41,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:41,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:41,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218659497] [2024-10-11 14:36:41,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218659497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:41,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:41,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:41,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281475192] [2024-10-11 14:36:41,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:41,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:41,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:41,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:41,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:41,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:41,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 107 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:41,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:41,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:41,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:41,558 INFO L124 PetriNetUnfolderBase]: 114/208 cut-off events. [2024-10-11 14:36:41,559 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-10-11 14:36:41,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 208 events. 114/208 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 609 event pairs, 15 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 575. Up to 115 conditions per place. [2024-10-11 14:36:41,561 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 34 selfloop transitions, 14 changer transitions 10/59 dead transitions. [2024-10-11 14:36:41,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 336 flow [2024-10-11 14:36:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-10-11 14:36:41,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-10-11 14:36:41,563 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 107 flow. Second operand 9 states and 83 transitions. [2024-10-11 14:36:41,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 336 flow [2024-10-11 14:36:41,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 14:36:41,565 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 190 flow [2024-10-11 14:36:41,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-10-11 14:36:41,566 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2024-10-11 14:36:41,566 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 190 flow [2024-10-11 14:36:41,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:41,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:41,567 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:41,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:36:41,567 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:41,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:41,567 INFO L85 PathProgramCache]: Analyzing trace with hash 601559441, now seen corresponding path program 3 times [2024-10-11 14:36:41,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:41,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150570511] [2024-10-11 14:36:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:41,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:41,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:41,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150570511] [2024-10-11 14:36:41,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150570511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:41,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:41,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:41,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308119333] [2024-10-11 14:36:41,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:41,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:41,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:41,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:41,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:41,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 190 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:41,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:41,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:41,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:41,882 INFO L124 PetriNetUnfolderBase]: 120/218 cut-off events. [2024-10-11 14:36:41,882 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-10-11 14:36:41,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 218 events. 120/218 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 670 event pairs, 10 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 698. Up to 119 conditions per place. [2024-10-11 14:36:41,885 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 39 selfloop transitions, 18 changer transitions 10/68 dead transitions. [2024-10-11 14:36:41,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 457 flow [2024-10-11 14:36:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-10-11 14:36:41,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-10-11 14:36:41,887 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 190 flow. Second operand 9 states and 87 transitions. [2024-10-11 14:36:41,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 457 flow [2024-10-11 14:36:41,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 422 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-11 14:36:41,890 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 256 flow [2024-10-11 14:36:41,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=256, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-10-11 14:36:41,891 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2024-10-11 14:36:41,891 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 256 flow [2024-10-11 14:36:41,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:41,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:41,892 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:41,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:36:41,892 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:41,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash -626722445, now seen corresponding path program 4 times [2024-10-11 14:36:41,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:41,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615219322] [2024-10-11 14:36:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:41,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:42,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:42,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615219322] [2024-10-11 14:36:42,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615219322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:42,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:42,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383714826] [2024-10-11 14:36:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:42,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:42,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:42,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 256 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:42,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:42,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:42,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:42,200 INFO L124 PetriNetUnfolderBase]: 140/247 cut-off events. [2024-10-11 14:36:42,200 INFO L125 PetriNetUnfolderBase]: For 412/412 co-relation queries the response was YES. [2024-10-11 14:36:42,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 247 events. 140/247 cut-off events. For 412/412 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 739 event pairs, 20 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 886. Up to 129 conditions per place. [2024-10-11 14:36:42,203 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 36 selfloop transitions, 26 changer transitions 9/72 dead transitions. [2024-10-11 14:36:42,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 570 flow [2024-10-11 14:36:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-10-11 14:36:42,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-10-11 14:36:42,204 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 256 flow. Second operand 9 states and 85 transitions. [2024-10-11 14:36:42,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 570 flow [2024-10-11 14:36:42,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 510 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-10-11 14:36:42,208 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 392 flow [2024-10-11 14:36:42,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=392, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-10-11 14:36:42,212 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2024-10-11 14:36:42,213 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 392 flow [2024-10-11 14:36:42,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:42,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:42,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:42,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:36:42,213 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:42,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:42,214 INFO L85 PathProgramCache]: Analyzing trace with hash -477500787, now seen corresponding path program 5 times [2024-10-11 14:36:42,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:42,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556770091] [2024-10-11 14:36:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:42,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:42,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:42,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556770091] [2024-10-11 14:36:42,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556770091] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:42,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:42,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:42,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287084660] [2024-10-11 14:36:42,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:42,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:42,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:42,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:42,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 392 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:42,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:42,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:42,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:42,488 INFO L124 PetriNetUnfolderBase]: 149/262 cut-off events. [2024-10-11 14:36:42,488 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-10-11 14:36:42,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 262 events. 149/262 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 850 event pairs, 11 based on Foata normal form. 1/263 useless extension candidates. Maximal degree in co-relation 1027. Up to 132 conditions per place. [2024-10-11 14:36:42,490 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 48 selfloop transitions, 25 changer transitions 10/84 dead transitions. [2024-10-11 14:36:42,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 714 flow [2024-10-11 14:36:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-10-11 14:36:42,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-10-11 14:36:42,491 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 392 flow. Second operand 9 states and 90 transitions. [2024-10-11 14:36:42,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 714 flow [2024-10-11 14:36:42,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 669 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-10-11 14:36:42,495 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 424 flow [2024-10-11 14:36:42,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=424, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-10-11 14:36:42,495 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2024-10-11 14:36:42,495 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 424 flow [2024-10-11 14:36:42,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:42,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:42,496 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:42,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:36:42,496 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:42,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1272129401, now seen corresponding path program 6 times [2024-10-11 14:36:42,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:42,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819810281] [2024-10-11 14:36:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:42,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:42,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:42,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819810281] [2024-10-11 14:36:42,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819810281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:42,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:42,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:42,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573805143] [2024-10-11 14:36:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:42,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:42,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:42,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:42,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:42,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:42,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:42,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:42,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:42,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:42,805 INFO L124 PetriNetUnfolderBase]: 167/290 cut-off events. [2024-10-11 14:36:42,805 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-10-11 14:36:42,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 290 events. 167/290 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 960 event pairs, 12 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 1243. Up to 149 conditions per place. [2024-10-11 14:36:42,807 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 43 selfloop transitions, 33 changer transitions 10/87 dead transitions. [2024-10-11 14:36:42,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 821 flow [2024-10-11 14:36:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:42,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-10-11 14:36:42,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-10-11 14:36:42,808 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 424 flow. Second operand 9 states and 87 transitions. [2024-10-11 14:36:42,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 821 flow [2024-10-11 14:36:42,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 87 transitions, 743 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-10-11 14:36:42,811 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 588 flow [2024-10-11 14:36:42,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=588, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-10-11 14:36:42,812 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 39 predicate places. [2024-10-11 14:36:42,812 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 588 flow [2024-10-11 14:36:42,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:42,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:42,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:42,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:36:42,812 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:42,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:42,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2033059425, now seen corresponding path program 7 times [2024-10-11 14:36:42,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:42,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781391782] [2024-10-11 14:36:42,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:42,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:42,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:42,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781391782] [2024-10-11 14:36:42,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781391782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:42,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:42,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209236617] [2024-10-11 14:36:42,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:42,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:42,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:42,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:42,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 588 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:42,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:42,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:42,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:43,118 INFO L124 PetriNetUnfolderBase]: 164/286 cut-off events. [2024-10-11 14:36:43,120 INFO L125 PetriNetUnfolderBase]: For 1033/1033 co-relation queries the response was YES. [2024-10-11 14:36:43,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 286 events. 164/286 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 948 event pairs, 14 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 1314. Up to 147 conditions per place. [2024-10-11 14:36:43,122 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 51 selfloop transitions, 29 changer transitions 11/92 dead transitions. [2024-10-11 14:36:43,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 937 flow [2024-10-11 14:36:43,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-10-11 14:36:43,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-10-11 14:36:43,124 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 588 flow. Second operand 9 states and 85 transitions. [2024-10-11 14:36:43,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 937 flow [2024-10-11 14:36:43,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 857 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-10-11 14:36:43,130 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 569 flow [2024-10-11 14:36:43,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=569, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-10-11 14:36:43,131 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 43 predicate places. [2024-10-11 14:36:43,132 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 569 flow [2024-10-11 14:36:43,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:43,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:43,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:43,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:36:43,133 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:43,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:43,133 INFO L85 PathProgramCache]: Analyzing trace with hash 557596545, now seen corresponding path program 8 times [2024-10-11 14:36:43,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:43,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414216412] [2024-10-11 14:36:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:43,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:43,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:43,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414216412] [2024-10-11 14:36:43,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414216412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:43,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:43,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:43,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413212001] [2024-10-11 14:36:43,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:43,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:43,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:43,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:43,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:43,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 569 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:43,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:43,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:43,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:43,438 INFO L124 PetriNetUnfolderBase]: 177/308 cut-off events. [2024-10-11 14:36:43,438 INFO L125 PetriNetUnfolderBase]: For 1110/1110 co-relation queries the response was YES. [2024-10-11 14:36:43,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 308 events. 177/308 cut-off events. For 1110/1110 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1045 event pairs, 14 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 1343. Up to 153 conditions per place. [2024-10-11 14:36:43,441 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 46 selfloop transitions, 34 changer transitions 10/91 dead transitions. [2024-10-11 14:36:43,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 894 flow [2024-10-11 14:36:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-10-11 14:36:43,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-10-11 14:36:43,443 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 569 flow. Second operand 9 states and 91 transitions. [2024-10-11 14:36:43,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 894 flow [2024-10-11 14:36:43,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 830 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-11 14:36:43,447 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 633 flow [2024-10-11 14:36:43,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=633, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-10-11 14:36:43,449 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2024-10-11 14:36:43,449 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 633 flow [2024-10-11 14:36:43,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:43,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:43,450 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:43,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:36:43,450 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:43,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1209208519, now seen corresponding path program 9 times [2024-10-11 14:36:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:43,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369483253] [2024-10-11 14:36:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:43,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:43,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:43,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369483253] [2024-10-11 14:36:43,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369483253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:43,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:43,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145293292] [2024-10-11 14:36:43,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:43,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:43,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:43,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:43,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:43,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:43,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 633 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:43,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:43,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:43,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:43,758 INFO L124 PetriNetUnfolderBase]: 183/321 cut-off events. [2024-10-11 14:36:43,759 INFO L125 PetriNetUnfolderBase]: For 1267/1267 co-relation queries the response was YES. [2024-10-11 14:36:43,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477 conditions, 321 events. 183/321 cut-off events. For 1267/1267 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1117 event pairs, 13 based on Foata normal form. 1/322 useless extension candidates. Maximal degree in co-relation 1450. Up to 169 conditions per place. [2024-10-11 14:36:43,761 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 47 selfloop transitions, 33 changer transitions 9/90 dead transitions. [2024-10-11 14:36:43,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 921 flow [2024-10-11 14:36:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:43,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-10-11 14:36:43,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-11 14:36:43,762 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 633 flow. Second operand 9 states and 88 transitions. [2024-10-11 14:36:43,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 921 flow [2024-10-11 14:36:43,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 854 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-11 14:36:43,766 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 663 flow [2024-10-11 14:36:43,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=663, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2024-10-11 14:36:43,767 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2024-10-11 14:36:43,767 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 663 flow [2024-10-11 14:36:43,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:43,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:43,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:43,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:36:43,768 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:43,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:43,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1807359203, now seen corresponding path program 10 times [2024-10-11 14:36:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:43,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560305473] [2024-10-11 14:36:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:43,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:43,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:43,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560305473] [2024-10-11 14:36:43,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560305473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:43,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:43,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:43,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310960492] [2024-10-11 14:36:43,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:43,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:43,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:43,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:43,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:43,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 663 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:43,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:43,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:43,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:44,004 INFO L124 PetriNetUnfolderBase]: 175/309 cut-off events. [2024-10-11 14:36:44,004 INFO L125 PetriNetUnfolderBase]: For 1370/1370 co-relation queries the response was YES. [2024-10-11 14:36:44,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 309 events. 175/309 cut-off events. For 1370/1370 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1066 event pairs, 12 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 1427. Up to 171 conditions per place. [2024-10-11 14:36:44,006 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 46 selfloop transitions, 32 changer transitions 10/89 dead transitions. [2024-10-11 14:36:44,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 942 flow [2024-10-11 14:36:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:44,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-10-11 14:36:44,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-11 14:36:44,007 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 663 flow. Second operand 9 states and 88 transitions. [2024-10-11 14:36:44,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 942 flow [2024-10-11 14:36:44,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 863 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-11 14:36:44,012 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 652 flow [2024-10-11 14:36:44,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=652, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-10-11 14:36:44,013 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-10-11 14:36:44,013 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 652 flow [2024-10-11 14:36:44,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:44,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:44,013 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:44,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:36:44,013 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:44,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:44,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1220331803, now seen corresponding path program 11 times [2024-10-11 14:36:44,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:44,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545811426] [2024-10-11 14:36:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:44,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:44,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:44,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545811426] [2024-10-11 14:36:44,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545811426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:44,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:44,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:44,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331049058] [2024-10-11 14:36:44,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:44,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:44,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:44,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:44,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:44,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:44,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 652 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:44,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:44,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:44,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:44,294 INFO L124 PetriNetUnfolderBase]: 172/305 cut-off events. [2024-10-11 14:36:44,294 INFO L125 PetriNetUnfolderBase]: For 1251/1251 co-relation queries the response was YES. [2024-10-11 14:36:44,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 305 events. 172/305 cut-off events. For 1251/1251 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1053 event pairs, 12 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 1384. Up to 169 conditions per place. [2024-10-11 14:36:44,296 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 45 selfloop transitions, 30 changer transitions 11/87 dead transitions. [2024-10-11 14:36:44,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 87 transitions, 914 flow [2024-10-11 14:36:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-10-11 14:36:44,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-11 14:36:44,297 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 652 flow. Second operand 9 states and 84 transitions. [2024-10-11 14:36:44,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 87 transitions, 914 flow [2024-10-11 14:36:44,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 87 transitions, 842 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-10-11 14:36:44,301 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 616 flow [2024-10-11 14:36:44,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=616, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-10-11 14:36:44,302 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2024-10-11 14:36:44,302 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 616 flow [2024-10-11 14:36:44,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:44,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:44,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:44,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:36:44,303 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:44,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:44,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1755561605, now seen corresponding path program 12 times [2024-10-11 14:36:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:44,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797083075] [2024-10-11 14:36:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:44,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:44,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:44,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797083075] [2024-10-11 14:36:44,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797083075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:44,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:44,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:44,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590090969] [2024-10-11 14:36:44,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:44,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:44,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:44,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:44,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:44,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:44,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 616 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:44,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:44,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:44,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:44,553 INFO L124 PetriNetUnfolderBase]: 165/292 cut-off events. [2024-10-11 14:36:44,553 INFO L125 PetriNetUnfolderBase]: For 1176/1176 co-relation queries the response was YES. [2024-10-11 14:36:44,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 292 events. 165/292 cut-off events. For 1176/1176 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 993 event pairs, 15 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 1318. Up to 159 conditions per place. [2024-10-11 14:36:44,555 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 28 changer transitions 11/84 dead transitions. [2024-10-11 14:36:44,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 868 flow [2024-10-11 14:36:44,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:44,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-10-11 14:36:44,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-10-11 14:36:44,556 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 616 flow. Second operand 9 states and 85 transitions. [2024-10-11 14:36:44,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 868 flow [2024-10-11 14:36:44,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 804 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-11 14:36:44,560 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 579 flow [2024-10-11 14:36:44,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-10-11 14:36:44,561 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-10-11 14:36:44,561 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 579 flow [2024-10-11 14:36:44,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:44,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:44,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:44,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 14:36:44,562 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:44,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:44,562 INFO L85 PathProgramCache]: Analyzing trace with hash -39695045, now seen corresponding path program 13 times [2024-10-11 14:36:44,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:44,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344364407] [2024-10-11 14:36:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:44,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:44,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:44,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344364407] [2024-10-11 14:36:44,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344364407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:44,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:44,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:44,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92303211] [2024-10-11 14:36:44,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:44,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:44,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:44,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:44,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:44,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:44,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 579 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:44,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:44,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:44,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:44,830 INFO L124 PetriNetUnfolderBase]: 163/289 cut-off events. [2024-10-11 14:36:44,830 INFO L125 PetriNetUnfolderBase]: For 1182/1182 co-relation queries the response was YES. [2024-10-11 14:36:44,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 289 events. 163/289 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 952 event pairs, 18 based on Foata normal form. 1/290 useless extension candidates. Maximal degree in co-relation 1276. Up to 157 conditions per place. [2024-10-11 14:36:44,832 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 43 selfloop transitions, 30 changer transitions 10/84 dead transitions. [2024-10-11 14:36:44,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 868 flow [2024-10-11 14:36:44,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:44,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-10-11 14:36:44,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-10-11 14:36:44,833 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 579 flow. Second operand 9 states and 85 transitions. [2024-10-11 14:36:44,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 868 flow [2024-10-11 14:36:44,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 84 transitions, 804 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-11 14:36:44,837 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 621 flow [2024-10-11 14:36:44,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=621, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-10-11 14:36:44,838 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2024-10-11 14:36:44,838 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 621 flow [2024-10-11 14:36:44,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:44,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:44,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:44,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 14:36:44,839 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:44,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash -372122145, now seen corresponding path program 14 times [2024-10-11 14:36:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:44,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556703863] [2024-10-11 14:36:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:44,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:44,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556703863] [2024-10-11 14:36:44,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556703863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:44,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:44,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:44,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338796121] [2024-10-11 14:36:44,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:44,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:44,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:44,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 621 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:44,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:44,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:44,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:45,092 INFO L124 PetriNetUnfolderBase]: 168/297 cut-off events. [2024-10-11 14:36:45,092 INFO L125 PetriNetUnfolderBase]: For 1388/1388 co-relation queries the response was YES. [2024-10-11 14:36:45,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 297 events. 168/297 cut-off events. For 1388/1388 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 974 event pairs, 18 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 1351. Up to 109 conditions per place. [2024-10-11 14:36:45,094 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 52 selfloop transitions, 26 changer transitions 9/88 dead transitions. [2024-10-11 14:36:45,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 942 flow [2024-10-11 14:36:45,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-10-11 14:36:45,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-10-11 14:36:45,095 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 621 flow. Second operand 9 states and 81 transitions. [2024-10-11 14:36:45,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 942 flow [2024-10-11 14:36:45,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 891 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-10-11 14:36:45,100 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 644 flow [2024-10-11 14:36:45,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-10-11 14:36:45,100 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 54 predicate places. [2024-10-11 14:36:45,101 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 644 flow [2024-10-11 14:36:45,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:45,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:45,101 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:45,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 14:36:45,101 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:45,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1597832343, now seen corresponding path program 15 times [2024-10-11 14:36:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:45,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067473605] [2024-10-11 14:36:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:45,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:45,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:45,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067473605] [2024-10-11 14:36:45,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067473605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:45,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:45,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:45,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957760969] [2024-10-11 14:36:45,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:45,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:45,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:45,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:45,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:45,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 644 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:45,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:45,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:45,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:45,363 INFO L124 PetriNetUnfolderBase]: 180/320 cut-off events. [2024-10-11 14:36:45,363 INFO L125 PetriNetUnfolderBase]: For 1566/1566 co-relation queries the response was YES. [2024-10-11 14:36:45,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 320 events. 180/320 cut-off events. For 1566/1566 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1103 event pairs, 24 based on Foata normal form. 1/321 useless extension candidates. Maximal degree in co-relation 1451. Up to 171 conditions per place. [2024-10-11 14:36:45,365 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 47 selfloop transitions, 31 changer transitions 10/89 dead transitions. [2024-10-11 14:36:45,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 89 transitions, 948 flow [2024-10-11 14:36:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-10-11 14:36:45,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-11 14:36:45,366 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 644 flow. Second operand 9 states and 88 transitions. [2024-10-11 14:36:45,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 89 transitions, 948 flow [2024-10-11 14:36:45,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 868 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-10-11 14:36:45,371 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 656 flow [2024-10-11 14:36:45,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-10-11 14:36:45,371 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2024-10-11 14:36:45,372 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 656 flow [2024-10-11 14:36:45,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:45,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:45,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:45,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 14:36:45,372 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:45,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:45,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1512864189, now seen corresponding path program 16 times [2024-10-11 14:36:45,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:45,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179131595] [2024-10-11 14:36:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:45,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:45,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:45,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179131595] [2024-10-11 14:36:45,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179131595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:45,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:45,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:45,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287229193] [2024-10-11 14:36:45,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:45,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:45,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:45,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:45,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:45,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:45,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 656 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:45,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:45,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:45,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:45,616 INFO L124 PetriNetUnfolderBase]: 186/333 cut-off events. [2024-10-11 14:36:45,616 INFO L125 PetriNetUnfolderBase]: For 1587/1587 co-relation queries the response was YES. [2024-10-11 14:36:45,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 333 events. 186/333 cut-off events. For 1587/1587 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1181 event pairs, 22 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 1495. Up to 189 conditions per place. [2024-10-11 14:36:45,619 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 54 selfloop transitions, 27 changer transitions 9/91 dead transitions. [2024-10-11 14:36:45,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 993 flow [2024-10-11 14:36:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-10-11 14:36:45,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-11 14:36:45,620 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 656 flow. Second operand 9 states and 84 transitions. [2024-10-11 14:36:45,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 993 flow [2024-10-11 14:36:45,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 921 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-10-11 14:36:45,624 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 671 flow [2024-10-11 14:36:45,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=671, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-10-11 14:36:45,625 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2024-10-11 14:36:45,625 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 671 flow [2024-10-11 14:36:45,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:45,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:45,625 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:45,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 14:36:45,626 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:45,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:45,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1499169893, now seen corresponding path program 17 times [2024-10-11 14:36:45,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:45,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285728150] [2024-10-11 14:36:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:45,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:45,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:45,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285728150] [2024-10-11 14:36:45,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285728150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:45,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:45,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:45,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294390929] [2024-10-11 14:36:45,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:45,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:45,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:45,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:45,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 671 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:45,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:45,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:45,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:45,863 INFO L124 PetriNetUnfolderBase]: 182/329 cut-off events. [2024-10-11 14:36:45,863 INFO L125 PetriNetUnfolderBase]: For 1623/1623 co-relation queries the response was YES. [2024-10-11 14:36:45,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 329 events. 182/329 cut-off events. For 1623/1623 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1183 event pairs, 24 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 1483. Up to 199 conditions per place. [2024-10-11 14:36:45,865 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 47 selfloop transitions, 28 changer transitions 11/87 dead transitions. [2024-10-11 14:36:45,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 947 flow [2024-10-11 14:36:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-10-11 14:36:45,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-10-11 14:36:45,866 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 671 flow. Second operand 9 states and 83 transitions. [2024-10-11 14:36:45,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 947 flow [2024-10-11 14:36:45,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 877 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-10-11 14:36:45,871 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 638 flow [2024-10-11 14:36:45,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=638, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-10-11 14:36:45,871 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 59 predicate places. [2024-10-11 14:36:45,871 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 638 flow [2024-10-11 14:36:45,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:45,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:45,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:45,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 14:36:45,872 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:45,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash -352562785, now seen corresponding path program 18 times [2024-10-11 14:36:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:45,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811693973] [2024-10-11 14:36:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:45,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:45,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:45,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811693973] [2024-10-11 14:36:45,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811693973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:45,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:45,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832850732] [2024-10-11 14:36:45,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:45,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:45,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:45,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:45,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 638 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:45,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:45,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:45,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:46,107 INFO L124 PetriNetUnfolderBase]: 175/316 cut-off events. [2024-10-11 14:36:46,107 INFO L125 PetriNetUnfolderBase]: For 1499/1499 co-relation queries the response was YES. [2024-10-11 14:36:46,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 316 events. 175/316 cut-off events. For 1499/1499 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1105 event pairs, 25 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 1397. Up to 189 conditions per place. [2024-10-11 14:36:46,109 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 52 selfloop transitions, 22 changer transitions 11/86 dead transitions. [2024-10-11 14:36:46,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 939 flow [2024-10-11 14:36:46,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:46,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-10-11 14:36:46,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-10-11 14:36:46,111 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 638 flow. Second operand 9 states and 81 transitions. [2024-10-11 14:36:46,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 939 flow [2024-10-11 14:36:46,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 879 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-11 14:36:46,115 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 592 flow [2024-10-11 14:36:46,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=592, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2024-10-11 14:36:46,116 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 57 predicate places. [2024-10-11 14:36:46,116 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 592 flow [2024-10-11 14:36:46,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:46,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:46,116 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:46,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 14:36:46,117 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:46,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:46,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1982602097, now seen corresponding path program 19 times [2024-10-11 14:36:46,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:46,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924377584] [2024-10-11 14:36:46,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:46,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:46,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924377584] [2024-10-11 14:36:46,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924377584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:46,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:46,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:46,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047158226] [2024-10-11 14:36:46,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:46,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:46,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:46,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:46,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:46,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:46,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 592 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:46,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:46,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:46,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:46,340 INFO L124 PetriNetUnfolderBase]: 168/303 cut-off events. [2024-10-11 14:36:46,340 INFO L125 PetriNetUnfolderBase]: For 1453/1453 co-relation queries the response was YES. [2024-10-11 14:36:46,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 303 events. 168/303 cut-off events. For 1453/1453 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1044 event pairs, 24 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 1331. Up to 177 conditions per place. [2024-10-11 14:36:46,342 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 45 selfloop transitions, 24 changer transitions 12/82 dead transitions. [2024-10-11 14:36:46,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 854 flow [2024-10-11 14:36:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-10-11 14:36:46,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-11 14:36:46,343 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 592 flow. Second operand 9 states and 84 transitions. [2024-10-11 14:36:46,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 854 flow [2024-10-11 14:36:46,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 804 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 14:36:46,365 INFO L231 Difference]: Finished difference. Result has 80 places, 60 transitions, 560 flow [2024-10-11 14:36:46,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=560, PETRI_PLACES=80, PETRI_TRANSITIONS=60} [2024-10-11 14:36:46,365 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2024-10-11 14:36:46,365 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 60 transitions, 560 flow [2024-10-11 14:36:46,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:46,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:46,366 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:46,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 14:36:46,366 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:46,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash -168972721, now seen corresponding path program 20 times [2024-10-11 14:36:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:46,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175709375] [2024-10-11 14:36:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:46,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:46,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:46,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175709375] [2024-10-11 14:36:46,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175709375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:46,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:46,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:36:46,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334367294] [2024-10-11 14:36:46,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:46,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:46,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:46,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:46,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:46,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 60 transitions, 560 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:46,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:46,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:46,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:46,643 INFO L124 PetriNetUnfolderBase]: 172/308 cut-off events. [2024-10-11 14:36:46,644 INFO L125 PetriNetUnfolderBase]: For 1620/1620 co-relation queries the response was YES. [2024-10-11 14:36:46,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 308 events. 172/308 cut-off events. For 1620/1620 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1036 event pairs, 23 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 1352. Up to 179 conditions per place. [2024-10-11 14:36:46,646 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 47 selfloop transitions, 25 changer transitions 9/82 dead transitions. [2024-10-11 14:36:46,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 852 flow [2024-10-11 14:36:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:46,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-10-11 14:36:46,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-11 14:36:46,647 INFO L175 Difference]: Start difference. First operand has 80 places, 60 transitions, 560 flow. Second operand 9 states and 84 transitions. [2024-10-11 14:36:46,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 852 flow [2024-10-11 14:36:46,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 796 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-11 14:36:46,652 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 582 flow [2024-10-11 14:36:46,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=582, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2024-10-11 14:36:46,652 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 57 predicate places. [2024-10-11 14:36:46,652 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 582 flow [2024-10-11 14:36:46,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:46,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:46,653 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:46,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 14:36:46,653 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:46,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1950102677, now seen corresponding path program 1 times [2024-10-11 14:36:46,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:46,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534796907] [2024-10-11 14:36:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:46,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:46,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534796907] [2024-10-11 14:36:46,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534796907] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:46,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:46,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:36:46,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336967516] [2024-10-11 14:36:46,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:46,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:46,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:46,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:46,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:46,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:36:46,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 582 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:46,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:46,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:36:46,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:46,788 INFO L124 PetriNetUnfolderBase]: 211/411 cut-off events. [2024-10-11 14:36:46,788 INFO L125 PetriNetUnfolderBase]: For 2791/2793 co-relation queries the response was YES. [2024-10-11 14:36:46,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 411 events. 211/411 cut-off events. For 2791/2793 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1778 event pairs, 26 based on Foata normal form. 14/423 useless extension candidates. Maximal degree in co-relation 1916. Up to 112 conditions per place. [2024-10-11 14:36:46,791 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 56 selfloop transitions, 28 changer transitions 4/103 dead transitions. [2024-10-11 14:36:46,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 103 transitions, 1087 flow [2024-10-11 14:36:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:36:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:36:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-10-11 14:36:46,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-11 14:36:46,792 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 582 flow. Second operand 7 states and 84 transitions. [2024-10-11 14:36:46,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 103 transitions, 1087 flow [2024-10-11 14:36:46,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 103 transitions, 1011 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-10-11 14:36:46,797 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 793 flow [2024-10-11 14:36:46,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=793, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-10-11 14:36:46,797 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2024-10-11 14:36:46,798 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 793 flow [2024-10-11 14:36:46,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:46,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:46,798 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:46,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 14:36:46,798 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:46,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1746424653, now seen corresponding path program 2 times [2024-10-11 14:36:46,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:46,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411431368] [2024-10-11 14:36:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:46,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:46,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:46,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411431368] [2024-10-11 14:36:46,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411431368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:46,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:46,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:36:46,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208229637] [2024-10-11 14:36:46,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:46,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:46,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:46,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:46,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:46,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:36:46,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 793 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:46,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:46,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:36:46,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:46,916 INFO L124 PetriNetUnfolderBase]: 233/461 cut-off events. [2024-10-11 14:36:46,916 INFO L125 PetriNetUnfolderBase]: For 3962/3962 co-relation queries the response was YES. [2024-10-11 14:36:46,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 461 events. 233/461 cut-off events. For 3962/3962 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2034 event pairs, 51 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 2161. Up to 204 conditions per place. [2024-10-11 14:36:46,919 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 67 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2024-10-11 14:36:46,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 1164 flow [2024-10-11 14:36:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:46,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-11 14:36:46,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2024-10-11 14:36:46,920 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 793 flow. Second operand 5 states and 72 transitions. [2024-10-11 14:36:46,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 103 transitions, 1164 flow [2024-10-11 14:36:46,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 103 transitions, 1069 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-10-11 14:36:46,927 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 860 flow [2024-10-11 14:36:46,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=860, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-10-11 14:36:46,928 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 62 predicate places. [2024-10-11 14:36:46,928 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 860 flow [2024-10-11 14:36:46,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:46,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:46,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:46,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 14:36:46,929 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:46,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash -442183470, now seen corresponding path program 1 times [2024-10-11 14:36:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:46,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602419055] [2024-10-11 14:36:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:46,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:46,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:46,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602419055] [2024-10-11 14:36:46,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602419055] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:46,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467879689] [2024-10-11 14:36:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:46,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:46,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:46,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:46,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:36:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:47,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:36:47,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:47,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:47,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467879689] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:47,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:36:47,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-10-11 14:36:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107688256] [2024-10-11 14:36:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:47,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:47,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:36:47,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:36:47,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 860 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:47,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:47,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:36:47,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:47,177 INFO L124 PetriNetUnfolderBase]: 320/656 cut-off events. [2024-10-11 14:36:47,177 INFO L125 PetriNetUnfolderBase]: For 4647/4655 co-relation queries the response was YES. [2024-10-11 14:36:47,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 656 events. 320/656 cut-off events. For 4647/4655 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3348 event pairs, 17 based on Foata normal form. 17/667 useless extension candidates. Maximal degree in co-relation 2713. Up to 290 conditions per place. [2024-10-11 14:36:47,182 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 62 selfloop transitions, 34 changer transitions 0/111 dead transitions. [2024-10-11 14:36:47,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 111 transitions, 1289 flow [2024-10-11 14:36:47,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-10-11 14:36:47,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-10-11 14:36:47,183 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 860 flow. Second operand 5 states and 71 transitions. [2024-10-11 14:36:47,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 111 transitions, 1289 flow [2024-10-11 14:36:47,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 1218 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-10-11 14:36:47,196 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 1040 flow [2024-10-11 14:36:47,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1040, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2024-10-11 14:36:47,196 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2024-10-11 14:36:47,197 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 1040 flow [2024-10-11 14:36:47,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:47,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:47,197 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:47,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:47,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-11 14:36:47,402 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:47,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash 880584829, now seen corresponding path program 3 times [2024-10-11 14:36:47,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:47,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645010104] [2024-10-11 14:36:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:47,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:47,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645010104] [2024-10-11 14:36:47,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645010104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:47,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:47,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:36:47,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947382132] [2024-10-11 14:36:47,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:47,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:47,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:47,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:47,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:47,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:36:47,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 1040 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:47,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:47,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:36:47,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:47,551 INFO L124 PetriNetUnfolderBase]: 311/650 cut-off events. [2024-10-11 14:36:47,551 INFO L125 PetriNetUnfolderBase]: For 4834/4842 co-relation queries the response was YES. [2024-10-11 14:36:47,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 650 events. 311/650 cut-off events. For 4834/4842 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3360 event pairs, 37 based on Foata normal form. 15/663 useless extension candidates. Maximal degree in co-relation 3001. Up to 154 conditions per place. [2024-10-11 14:36:47,555 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 72 selfloop transitions, 30 changer transitions 4/121 dead transitions. [2024-10-11 14:36:47,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 121 transitions, 1462 flow [2024-10-11 14:36:47,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:36:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:36:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-10-11 14:36:47,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-11 14:36:47,556 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 1040 flow. Second operand 8 states and 99 transitions. [2024-10-11 14:36:47,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 121 transitions, 1462 flow [2024-10-11 14:36:47,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 121 transitions, 1436 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-10-11 14:36:47,568 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 1081 flow [2024-10-11 14:36:47,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1081, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-10-11 14:36:47,568 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 75 predicate places. [2024-10-11 14:36:47,568 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 1081 flow [2024-10-11 14:36:47,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:47,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:47,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:47,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 14:36:47,569 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:47,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1498949658, now seen corresponding path program 2 times [2024-10-11 14:36:47,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:47,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177377950] [2024-10-11 14:36:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:47,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:47,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177377950] [2024-10-11 14:36:47,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177377950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:47,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:47,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:36:47,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673477566] [2024-10-11 14:36:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:47,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:47,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:47,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:47,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:36:47,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 1081 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:47,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:47,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:36:47,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:47,698 INFO L124 PetriNetUnfolderBase]: 274/574 cut-off events. [2024-10-11 14:36:47,698 INFO L125 PetriNetUnfolderBase]: For 4656/4664 co-relation queries the response was YES. [2024-10-11 14:36:47,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 574 events. 274/574 cut-off events. For 4656/4664 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2867 event pairs, 19 based on Foata normal form. 20/594 useless extension candidates. Maximal degree in co-relation 2777. Up to 170 conditions per place. [2024-10-11 14:36:47,702 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 64 selfloop transitions, 24 changer transitions 3/105 dead transitions. [2024-10-11 14:36:47,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 1396 flow [2024-10-11 14:36:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:36:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:36:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-10-11 14:36:47,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-10-11 14:36:47,703 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 1081 flow. Second operand 6 states and 74 transitions. [2024-10-11 14:36:47,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 1396 flow [2024-10-11 14:36:47,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 1340 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-11 14:36:47,714 INFO L231 Difference]: Finished difference. Result has 102 places, 79 transitions, 987 flow [2024-10-11 14:36:47,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=987, PETRI_PLACES=102, PETRI_TRANSITIONS=79} [2024-10-11 14:36:47,715 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 78 predicate places. [2024-10-11 14:36:47,715 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 79 transitions, 987 flow [2024-10-11 14:36:47,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:47,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:47,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:47,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 14:36:47,716 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:47,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:47,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1124435803, now seen corresponding path program 4 times [2024-10-11 14:36:47,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:47,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377757383] [2024-10-11 14:36:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:47,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:47,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:47,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377757383] [2024-10-11 14:36:47,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377757383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:47,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:47,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:36:47,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292613578] [2024-10-11 14:36:47,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:47,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:47,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:47,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:47,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:36:47,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 79 transitions, 987 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:47,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:47,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:36:47,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:47,832 INFO L124 PetriNetUnfolderBase]: 245/503 cut-off events. [2024-10-11 14:36:47,833 INFO L125 PetriNetUnfolderBase]: For 4372/4376 co-relation queries the response was YES. [2024-10-11 14:36:47,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 503 events. 245/503 cut-off events. For 4372/4376 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2347 event pairs, 30 based on Foata normal form. 12/512 useless extension candidates. Maximal degree in co-relation 2453. Up to 272 conditions per place. [2024-10-11 14:36:47,836 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 58 selfloop transitions, 21 changer transitions 1/94 dead transitions. [2024-10-11 14:36:47,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 1192 flow [2024-10-11 14:36:47,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-10-11 14:36:47,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-10-11 14:36:47,838 INFO L175 Difference]: Start difference. First operand has 102 places, 79 transitions, 987 flow. Second operand 5 states and 65 transitions. [2024-10-11 14:36:47,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 1192 flow [2024-10-11 14:36:47,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 94 transitions, 1140 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-10-11 14:36:47,846 INFO L231 Difference]: Finished difference. Result has 99 places, 77 transitions, 927 flow [2024-10-11 14:36:47,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=927, PETRI_PLACES=99, PETRI_TRANSITIONS=77} [2024-10-11 14:36:47,847 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 75 predicate places. [2024-10-11 14:36:47,847 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 77 transitions, 927 flow [2024-10-11 14:36:47,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:47,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:47,847 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:47,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 14:36:47,847 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:47,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1220290974, now seen corresponding path program 3 times [2024-10-11 14:36:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185153799] [2024-10-11 14:36:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:47,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:47,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185153799] [2024-10-11 14:36:47,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185153799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:47,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:47,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:36:47,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939770533] [2024-10-11 14:36:47,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:47,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:47,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:47,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:47,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:47,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:36:47,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 77 transitions, 927 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:47,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:47,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:36:47,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:47,985 INFO L124 PetriNetUnfolderBase]: 313/623 cut-off events. [2024-10-11 14:36:47,985 INFO L125 PetriNetUnfolderBase]: For 5299/5301 co-relation queries the response was YES. [2024-10-11 14:36:47,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3240 conditions, 623 events. 313/623 cut-off events. For 5299/5301 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3074 event pairs, 92 based on Foata normal form. 11/625 useless extension candidates. Maximal degree in co-relation 3074. Up to 375 conditions per place. [2024-10-11 14:36:47,990 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 68 selfloop transitions, 31 changer transitions 0/113 dead transitions. [2024-10-11 14:36:47,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 113 transitions, 1493 flow [2024-10-11 14:36:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-10-11 14:36:47,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2024-10-11 14:36:47,990 INFO L175 Difference]: Start difference. First operand has 99 places, 77 transitions, 927 flow. Second operand 5 states and 68 transitions. [2024-10-11 14:36:47,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 113 transitions, 1493 flow [2024-10-11 14:36:47,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 113 transitions, 1410 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-10-11 14:36:47,999 INFO L231 Difference]: Finished difference. Result has 97 places, 92 transitions, 1212 flow [2024-10-11 14:36:47,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1212, PETRI_PLACES=97, PETRI_TRANSITIONS=92} [2024-10-11 14:36:48,000 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 73 predicate places. [2024-10-11 14:36:48,000 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 92 transitions, 1212 flow [2024-10-11 14:36:48,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:48,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:48,002 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:48,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-11 14:36:48,002 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:48,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1319075840, now seen corresponding path program 4 times [2024-10-11 14:36:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:48,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612518642] [2024-10-11 14:36:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:48,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:48,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612518642] [2024-10-11 14:36:48,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612518642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:48,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:48,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:36:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030440990] [2024-10-11 14:36:48,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:48,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:48,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:48,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:36:48,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 1212 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:48,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:48,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:36:48,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:48,131 INFO L124 PetriNetUnfolderBase]: 300/610 cut-off events. [2024-10-11 14:36:48,132 INFO L125 PetriNetUnfolderBase]: For 5279/5281 co-relation queries the response was YES. [2024-10-11 14:36:48,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 610 events. 300/610 cut-off events. For 5279/5281 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3051 event pairs, 55 based on Foata normal form. 12/621 useless extension candidates. Maximal degree in co-relation 2398. Up to 227 conditions per place. [2024-10-11 14:36:48,135 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 65 selfloop transitions, 32 changer transitions 3/114 dead transitions. [2024-10-11 14:36:48,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 114 transitions, 1564 flow [2024-10-11 14:36:48,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:36:48,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:36:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-10-11 14:36:48,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194805194805194 [2024-10-11 14:36:48,137 INFO L175 Difference]: Start difference. First operand has 97 places, 92 transitions, 1212 flow. Second operand 7 states and 80 transitions. [2024-10-11 14:36:48,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 114 transitions, 1564 flow [2024-10-11 14:36:48,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 114 transitions, 1544 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-10-11 14:36:48,147 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 1266 flow [2024-10-11 14:36:48,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1266, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2024-10-11 14:36:48,150 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 80 predicate places. [2024-10-11 14:36:48,150 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 1266 flow [2024-10-11 14:36:48,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:48,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:48,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:48,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-11 14:36:48,151 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:48,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash 117185711, now seen corresponding path program 5 times [2024-10-11 14:36:48,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:48,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473433456] [2024-10-11 14:36:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:48,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:48,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:48,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473433456] [2024-10-11 14:36:48,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473433456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:48,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:48,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:36:48,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840589827] [2024-10-11 14:36:48,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:48,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:48,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:48,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:48,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:48,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:36:48,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 1266 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:48,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:48,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:36:48,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:48,280 INFO L124 PetriNetUnfolderBase]: 255/521 cut-off events. [2024-10-11 14:36:48,281 INFO L125 PetriNetUnfolderBase]: For 4748/4748 co-relation queries the response was YES. [2024-10-11 14:36:48,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2887 conditions, 521 events. 255/521 cut-off events. For 4748/4748 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2459 event pairs, 25 based on Foata normal form. 14/533 useless extension candidates. Maximal degree in co-relation 2446. Up to 159 conditions per place. [2024-10-11 14:36:48,285 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 68 selfloop transitions, 22 changer transitions 3/106 dead transitions. [2024-10-11 14:36:48,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 1507 flow [2024-10-11 14:36:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:36:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:36:48,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-10-11 14:36:48,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-11 14:36:48,288 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 1266 flow. Second operand 6 states and 72 transitions. [2024-10-11 14:36:48,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 1507 flow [2024-10-11 14:36:48,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 1438 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-10-11 14:36:48,297 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 1101 flow [2024-10-11 14:36:48,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1101, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2024-10-11 14:36:48,298 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 81 predicate places. [2024-10-11 14:36:48,298 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 1101 flow [2024-10-11 14:36:48,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:48,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:48,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:48,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-11 14:36:48,298 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:48,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:48,298 INFO L85 PathProgramCache]: Analyzing trace with hash 629251502, now seen corresponding path program 5 times [2024-10-11 14:36:48,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:48,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639017026] [2024-10-11 14:36:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:48,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:48,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:48,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639017026] [2024-10-11 14:36:48,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639017026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:48,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:48,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:36:48,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713026622] [2024-10-11 14:36:48,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:48,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:48,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:48,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:48,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:36:48,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 1101 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:48,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:48,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:36:48,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:48,440 INFO L124 PetriNetUnfolderBase]: 225/445 cut-off events. [2024-10-11 14:36:48,440 INFO L125 PetriNetUnfolderBase]: For 4400/4400 co-relation queries the response was YES. [2024-10-11 14:36:48,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 445 events. 225/445 cut-off events. For 4400/4400 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1936 event pairs, 40 based on Foata normal form. 6/451 useless extension candidates. Maximal degree in co-relation 2137. Up to 146 conditions per place. [2024-10-11 14:36:48,443 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 61 selfloop transitions, 27 changer transitions 2/103 dead transitions. [2024-10-11 14:36:48,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 1373 flow [2024-10-11 14:36:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:36:48,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:36:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-10-11 14:36:48,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2024-10-11 14:36:48,447 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 1101 flow. Second operand 8 states and 91 transitions. [2024-10-11 14:36:48,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 1373 flow [2024-10-11 14:36:48,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 1298 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-10-11 14:36:48,455 INFO L231 Difference]: Finished difference. Result has 102 places, 78 transitions, 1013 flow [2024-10-11 14:36:48,455 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1013, PETRI_PLACES=102, PETRI_TRANSITIONS=78} [2024-10-11 14:36:48,456 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 78 predicate places. [2024-10-11 14:36:48,456 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 78 transitions, 1013 flow [2024-10-11 14:36:48,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:48,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:48,456 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:48,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-11 14:36:48,457 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:48,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash 690484512, now seen corresponding path program 1 times [2024-10-11 14:36:48,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:48,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794369922] [2024-10-11 14:36:48,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:48,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:48,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:48,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794369922] [2024-10-11 14:36:48,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794369922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:48,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757991092] [2024-10-11 14:36:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:48,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:48,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:48,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:36:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:48,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:36:48,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:48,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:48,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757991092] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:48,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:48,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-11 14:36:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67842040] [2024-10-11 14:36:48,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:48,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:36:48,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:48,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:36:48,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:36:48,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:48,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 78 transitions, 1013 flow. Second operand has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 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) [2024-10-11 14:36:48,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:48,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:48,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:50,053 INFO L124 PetriNetUnfolderBase]: 677/1270 cut-off events. [2024-10-11 14:36:50,054 INFO L125 PetriNetUnfolderBase]: For 9664/9664 co-relation queries the response was YES. [2024-10-11 14:36:50,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 1270 events. 677/1270 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6775 event pairs, 39 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 5740. Up to 236 conditions per place. [2024-10-11 14:36:50,061 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 128 selfloop transitions, 85 changer transitions 64/278 dead transitions. [2024-10-11 14:36:50,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 278 transitions, 3312 flow [2024-10-11 14:36:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-11 14:36:50,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-10-11 14:36:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 310 transitions. [2024-10-11 14:36:50,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-10-11 14:36:50,063 INFO L175 Difference]: Start difference. First operand has 102 places, 78 transitions, 1013 flow. Second operand 36 states and 310 transitions. [2024-10-11 14:36:50,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 278 transitions, 3312 flow [2024-10-11 14:36:50,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 278 transitions, 3126 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-11 14:36:50,076 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1933 flow [2024-10-11 14:36:50,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1933, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2024-10-11 14:36:50,076 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 126 predicate places. [2024-10-11 14:36:50,076 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1933 flow [2024-10-11 14:36:50,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 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) [2024-10-11 14:36:50,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:50,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:50,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:36:50,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:50,281 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:50,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1806909290, now seen corresponding path program 2 times [2024-10-11 14:36:50,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:50,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864767336] [2024-10-11 14:36:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:50,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864767336] [2024-10-11 14:36:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864767336] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850317057] [2024-10-11 14:36:50,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:36:50,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:50,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:50,373 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:50,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:36:50,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:36:50,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:50,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:36:50,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:50,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:50,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850317057] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:50,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:50,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-10-11 14:36:50,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721396367] [2024-10-11 14:36:50,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:50,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 14:36:50,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:50,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 14:36:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-10-11 14:36:50,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:50,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 1933 flow. Second operand has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:50,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:50,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:50,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:51,740 INFO L124 PetriNetUnfolderBase]: 845/1586 cut-off events. [2024-10-11 14:36:51,740 INFO L125 PetriNetUnfolderBase]: For 15582/15582 co-relation queries the response was YES. [2024-10-11 14:36:51,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8959 conditions, 1586 events. 845/1586 cut-off events. For 15582/15582 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9088 event pairs, 112 based on Foata normal form. 13/1599 useless extension candidates. Maximal degree in co-relation 8834. Up to 738 conditions per place. [2024-10-11 14:36:51,750 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 132 selfloop transitions, 162 changer transitions 15/310 dead transitions. [2024-10-11 14:36:51,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 310 transitions, 4870 flow [2024-10-11 14:36:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-11 14:36:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-11 14:36:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 298 transitions. [2024-10-11 14:36:51,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36609336609336607 [2024-10-11 14:36:51,752 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1933 flow. Second operand 37 states and 298 transitions. [2024-10-11 14:36:51,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 310 transitions, 4870 flow [2024-10-11 14:36:51,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 310 transitions, 4082 flow, removed 287 selfloop flow, removed 17 redundant places. [2024-10-11 14:36:51,790 INFO L231 Difference]: Finished difference. Result has 170 places, 224 transitions, 3467 flow [2024-10-11 14:36:51,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3467, PETRI_PLACES=170, PETRI_TRANSITIONS=224} [2024-10-11 14:36:51,790 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 146 predicate places. [2024-10-11 14:36:51,790 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 224 transitions, 3467 flow [2024-10-11 14:36:51,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:51,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:51,791 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:51,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:51,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:51,992 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:51,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:51,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2068495394, now seen corresponding path program 3 times [2024-10-11 14:36:51,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:51,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789767464] [2024-10-11 14:36:51,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:51,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:52,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:52,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789767464] [2024-10-11 14:36:52,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789767464] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:52,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030127613] [2024-10-11 14:36:52,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:36:52,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:52,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:52,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:52,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:36:52,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:36:52,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:52,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:36:52,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:52,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:52,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030127613] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:52,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:52,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-10-11 14:36:52,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321235625] [2024-10-11 14:36:52,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:52,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 14:36:52,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:52,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 14:36:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-10-11 14:36:52,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:52,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 224 transitions, 3467 flow. Second operand has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:52,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:52,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:52,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:52,885 INFO L124 PetriNetUnfolderBase]: 833/1553 cut-off events. [2024-10-11 14:36:52,885 INFO L125 PetriNetUnfolderBase]: For 13684/13684 co-relation queries the response was YES. [2024-10-11 14:36:52,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8700 conditions, 1553 events. 833/1553 cut-off events. For 13684/13684 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8828 event pairs, 62 based on Foata normal form. 5/1558 useless extension candidates. Maximal degree in co-relation 8597. Up to 589 conditions per place. [2024-10-11 14:36:52,894 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 126 selfloop transitions, 136 changer transitions 23/286 dead transitions. [2024-10-11 14:36:52,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 286 transitions, 4579 flow [2024-10-11 14:36:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 14:36:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 14:36:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 159 transitions. [2024-10-11 14:36:52,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-10-11 14:36:52,895 INFO L175 Difference]: Start difference. First operand has 170 places, 224 transitions, 3467 flow. Second operand 18 states and 159 transitions. [2024-10-11 14:36:52,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 286 transitions, 4579 flow [2024-10-11 14:36:52,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 286 transitions, 4072 flow, removed 190 selfloop flow, removed 10 redundant places. [2024-10-11 14:36:52,935 INFO L231 Difference]: Finished difference. Result has 182 places, 229 transitions, 3396 flow [2024-10-11 14:36:52,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3396, PETRI_PLACES=182, PETRI_TRANSITIONS=229} [2024-10-11 14:36:52,936 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 158 predicate places. [2024-10-11 14:36:52,936 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 229 transitions, 3396 flow [2024-10-11 14:36:52,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:52,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:52,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:52,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:36:53,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-11 14:36:53,141 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:53,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:53,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1558107788, now seen corresponding path program 4 times [2024-10-11 14:36:53,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:53,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602898732] [2024-10-11 14:36:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:53,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:53,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602898732] [2024-10-11 14:36:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602898732] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803625882] [2024-10-11 14:36:53,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:36:53,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:53,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:53,304 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:53,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:36:53,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:36:53,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:53,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:36:53,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:53,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:53,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803625882] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:53,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:53,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-11 14:36:53,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583581135] [2024-10-11 14:36:53,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:53,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:36:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:36:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:36:53,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:53,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 229 transitions, 3396 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:53,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:53,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:53,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:54,397 INFO L124 PetriNetUnfolderBase]: 919/1702 cut-off events. [2024-10-11 14:36:54,397 INFO L125 PetriNetUnfolderBase]: For 16704/16704 co-relation queries the response was YES. [2024-10-11 14:36:54,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9697 conditions, 1702 events. 919/1702 cut-off events. For 16704/16704 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 9726 event pairs, 48 based on Foata normal form. 5/1707 useless extension candidates. Maximal degree in co-relation 9595. Up to 366 conditions per place. [2024-10-11 14:36:54,408 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 108 selfloop transitions, 164 changer transitions 59/332 dead transitions. [2024-10-11 14:36:54,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 332 transitions, 5219 flow [2024-10-11 14:36:54,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:36:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:36:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 161 transitions. [2024-10-11 14:36:54,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38516746411483255 [2024-10-11 14:36:54,409 INFO L175 Difference]: Start difference. First operand has 182 places, 229 transitions, 3396 flow. Second operand 19 states and 161 transitions. [2024-10-11 14:36:54,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 332 transitions, 5219 flow [2024-10-11 14:36:54,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 332 transitions, 5094 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-10-11 14:36:54,465 INFO L231 Difference]: Finished difference. Result has 198 places, 237 transitions, 3973 flow [2024-10-11 14:36:54,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3973, PETRI_PLACES=198, PETRI_TRANSITIONS=237} [2024-10-11 14:36:54,466 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 174 predicate places. [2024-10-11 14:36:54,466 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 237 transitions, 3973 flow [2024-10-11 14:36:54,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:54,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:54,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:54,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 14:36:54,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-11 14:36:54,671 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:54,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:54,671 INFO L85 PathProgramCache]: Analyzing trace with hash -84419114, now seen corresponding path program 5 times [2024-10-11 14:36:54,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:54,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281694572] [2024-10-11 14:36:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:54,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:54,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:54,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281694572] [2024-10-11 14:36:54,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281694572] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:54,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307577065] [2024-10-11 14:36:54,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:36:54,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:54,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:54,792 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:54,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:36:54,830 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:36:54,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:54,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:36:54,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:54,909 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:36:54,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307577065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:54,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:36:54,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-10-11 14:36:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736255119] [2024-10-11 14:36:54,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:54,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:36:54,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:54,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:36:54,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:36:54,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:54,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 237 transitions, 3973 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:54,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:54,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:54,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:55,177 INFO L124 PetriNetUnfolderBase]: 774/1429 cut-off events. [2024-10-11 14:36:55,178 INFO L125 PetriNetUnfolderBase]: For 17979/17979 co-relation queries the response was YES. [2024-10-11 14:36:55,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9203 conditions, 1429 events. 774/1429 cut-off events. For 17979/17979 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7705 event pairs, 153 based on Foata normal form. 2/1431 useless extension candidates. Maximal degree in co-relation 9143. Up to 871 conditions per place. [2024-10-11 14:36:55,188 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 151 selfloop transitions, 112 changer transitions 17/281 dead transitions. [2024-10-11 14:36:55,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 281 transitions, 5101 flow [2024-10-11 14:36:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-10-11 14:36:55,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-10-11 14:36:55,189 INFO L175 Difference]: Start difference. First operand has 198 places, 237 transitions, 3973 flow. Second operand 9 states and 82 transitions. [2024-10-11 14:36:55,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 281 transitions, 5101 flow [2024-10-11 14:36:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 281 transitions, 4794 flow, removed 116 selfloop flow, removed 9 redundant places. [2024-10-11 14:36:55,255 INFO L231 Difference]: Finished difference. Result has 187 places, 247 transitions, 4104 flow [2024-10-11 14:36:55,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4104, PETRI_PLACES=187, PETRI_TRANSITIONS=247} [2024-10-11 14:36:55,256 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 163 predicate places. [2024-10-11 14:36:55,256 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 247 transitions, 4104 flow [2024-10-11 14:36:55,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:55,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:55,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:55,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:55,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-11 14:36:55,462 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:55,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:55,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1723375276, now seen corresponding path program 6 times [2024-10-11 14:36:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:55,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731296835] [2024-10-11 14:36:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:55,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:55,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731296835] [2024-10-11 14:36:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731296835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982419710] [2024-10-11 14:36:55,553 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:36:55,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:55,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:55,558 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:55,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 14:36:55,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:36:55,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:55,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:36:55,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:55,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:55,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:55,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982419710] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:55,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:55,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-10-11 14:36:55,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663888007] [2024-10-11 14:36:55,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:55,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 14:36:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 14:36:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-10-11 14:36:55,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:55,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 247 transitions, 4104 flow. Second operand has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:55,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:55,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:55,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:56,442 INFO L124 PetriNetUnfolderBase]: 1063/1975 cut-off events. [2024-10-11 14:36:56,443 INFO L125 PetriNetUnfolderBase]: For 24361/24361 co-relation queries the response was YES. [2024-10-11 14:36:56,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12168 conditions, 1975 events. 1063/1975 cut-off events. For 24361/24361 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 11627 event pairs, 117 based on Foata normal form. 7/1982 useless extension candidates. Maximal degree in co-relation 12109. Up to 710 conditions per place. [2024-10-11 14:36:56,454 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 149 selfloop transitions, 177 changer transitions 54/381 dead transitions. [2024-10-11 14:36:56,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 381 transitions, 6785 flow [2024-10-11 14:36:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:36:56,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:36:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 142 transitions. [2024-10-11 14:36:56,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-10-11 14:36:56,456 INFO L175 Difference]: Start difference. First operand has 187 places, 247 transitions, 4104 flow. Second operand 16 states and 142 transitions. [2024-10-11 14:36:56,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 381 transitions, 6785 flow [2024-10-11 14:36:56,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 381 transitions, 6512 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-10-11 14:36:56,535 INFO L231 Difference]: Finished difference. Result has 200 places, 287 transitions, 5162 flow [2024-10-11 14:36:56,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5162, PETRI_PLACES=200, PETRI_TRANSITIONS=287} [2024-10-11 14:36:56,536 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 176 predicate places. [2024-10-11 14:36:56,536 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 287 transitions, 5162 flow [2024-10-11 14:36:56,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:56,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:56,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:56,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:56,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:56,738 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:56,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:56,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1786553302, now seen corresponding path program 7 times [2024-10-11 14:36:56,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:56,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800075674] [2024-10-11 14:36:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:56,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:56,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:56,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800075674] [2024-10-11 14:36:56,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800075674] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:56,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867505093] [2024-10-11 14:36:56,840 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:36:56,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:56,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:56,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:56,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 14:36:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:56,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:36:56,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:56,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867505093] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:57,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:57,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-10-11 14:36:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407653836] [2024-10-11 14:36:57,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:57,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 14:36:57,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 14:36:57,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-10-11 14:36:57,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:57,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 287 transitions, 5162 flow. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:57,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:57,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:57,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:57,900 INFO L124 PetriNetUnfolderBase]: 1277/2361 cut-off events. [2024-10-11 14:36:57,905 INFO L125 PetriNetUnfolderBase]: For 33130/33130 co-relation queries the response was YES. [2024-10-11 14:36:57,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15756 conditions, 2361 events. 1277/2361 cut-off events. For 33130/33130 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14492 event pairs, 63 based on Foata normal form. 37/2398 useless extension candidates. Maximal degree in co-relation 15695. Up to 516 conditions per place. [2024-10-11 14:36:57,928 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 136 selfloop transitions, 333 changer transitions 42/512 dead transitions. [2024-10-11 14:36:57,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 512 transitions, 9858 flow [2024-10-11 14:36:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 14:36:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 14:36:57,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 238 transitions. [2024-10-11 14:36:57,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-10-11 14:36:57,938 INFO L175 Difference]: Start difference. First operand has 200 places, 287 transitions, 5162 flow. Second operand 27 states and 238 transitions. [2024-10-11 14:36:57,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 512 transitions, 9858 flow [2024-10-11 14:36:58,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 512 transitions, 9220 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-10-11 14:36:58,078 INFO L231 Difference]: Finished difference. Result has 227 places, 421 transitions, 8448 flow [2024-10-11 14:36:58,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4728, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=8448, PETRI_PLACES=227, PETRI_TRANSITIONS=421} [2024-10-11 14:36:58,079 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 203 predicate places. [2024-10-11 14:36:58,079 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 421 transitions, 8448 flow [2024-10-11 14:36:58,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:58,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:58,079 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:58,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 14:36:58,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-11 14:36:58,280 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:58,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash 83582246, now seen corresponding path program 8 times [2024-10-11 14:36:58,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:58,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893393556] [2024-10-11 14:36:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:58,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:58,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893393556] [2024-10-11 14:36:58,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893393556] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398698679] [2024-10-11 14:36:58,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:36:58,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:58,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:58,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 14:36:58,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:36:58,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:58,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:36:58,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:58,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398698679] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:58,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:58,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-10-11 14:36:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074641756] [2024-10-11 14:36:58,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:58,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 14:36:58,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 14:36:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-10-11 14:36:58,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:36:58,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 421 transitions, 8448 flow. Second operand has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:58,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:58,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:36:58,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:59,283 INFO L124 PetriNetUnfolderBase]: 1187/2217 cut-off events. [2024-10-11 14:36:59,283 INFO L125 PetriNetUnfolderBase]: For 33341/33341 co-relation queries the response was YES. [2024-10-11 14:36:59,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15797 conditions, 2217 events. 1187/2217 cut-off events. For 33341/33341 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13483 event pairs, 148 based on Foata normal form. 3/2220 useless extension candidates. Maximal degree in co-relation 15726. Up to 974 conditions per place. [2024-10-11 14:36:59,299 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 219 selfloop transitions, 228 changer transitions 22/470 dead transitions. [2024-10-11 14:36:59,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 470 transitions, 9918 flow [2024-10-11 14:36:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:36:59,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:36:59,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 123 transitions. [2024-10-11 14:36:59,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39935064935064934 [2024-10-11 14:36:59,301 INFO L175 Difference]: Start difference. First operand has 227 places, 421 transitions, 8448 flow. Second operand 14 states and 123 transitions. [2024-10-11 14:36:59,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 470 transitions, 9918 flow [2024-10-11 14:36:59,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 470 transitions, 9153 flow, removed 294 selfloop flow, removed 8 redundant places. [2024-10-11 14:36:59,465 INFO L231 Difference]: Finished difference. Result has 231 places, 409 transitions, 8017 flow [2024-10-11 14:36:59,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7788, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8017, PETRI_PLACES=231, PETRI_TRANSITIONS=409} [2024-10-11 14:36:59,466 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 207 predicate places. [2024-10-11 14:36:59,466 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 409 transitions, 8017 flow [2024-10-11 14:36:59,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:59,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:59,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:59,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:59,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:59,670 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:59,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:59,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1333344904, now seen corresponding path program 9 times [2024-10-11 14:36:59,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:59,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960836528] [2024-10-11 14:36:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:59,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960836528] [2024-10-11 14:36:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960836528] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297307037] [2024-10-11 14:36:59,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:36:59,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:59,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:59,772 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:59,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 14:36:59,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:36:59,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:59,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:36:59,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:59,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:00,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297307037] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:00,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:00,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-10-11 14:37:00,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285395985] [2024-10-11 14:37:00,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:00,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 14:37:00,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:00,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 14:37:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-10-11 14:37:00,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:00,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 409 transitions, 8017 flow. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 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) [2024-10-11 14:37:00,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:00,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:00,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:00,652 INFO L124 PetriNetUnfolderBase]: 1136/2123 cut-off events. [2024-10-11 14:37:00,652 INFO L125 PetriNetUnfolderBase]: For 31225/31225 co-relation queries the response was YES. [2024-10-11 14:37:00,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14916 conditions, 2123 events. 1136/2123 cut-off events. For 31225/31225 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12774 event pairs, 151 based on Foata normal form. 3/2126 useless extension candidates. Maximal degree in co-relation 14849. Up to 1018 conditions per place. [2024-10-11 14:37:00,667 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 194 selfloop transitions, 199 changer transitions 63/457 dead transitions. [2024-10-11 14:37:00,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 457 transitions, 9438 flow [2024-10-11 14:37:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:37:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:37:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 119 transitions. [2024-10-11 14:37:00,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-10-11 14:37:00,668 INFO L175 Difference]: Start difference. First operand has 231 places, 409 transitions, 8017 flow. Second operand 14 states and 119 transitions. [2024-10-11 14:37:00,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 457 transitions, 9438 flow [2024-10-11 14:37:00,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 457 transitions, 9169 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-10-11 14:37:00,800 INFO L231 Difference]: Finished difference. Result has 233 places, 363 transitions, 7195 flow [2024-10-11 14:37:00,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7759, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7195, PETRI_PLACES=233, PETRI_TRANSITIONS=363} [2024-10-11 14:37:00,801 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 209 predicate places. [2024-10-11 14:37:00,801 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 363 transitions, 7195 flow [2024-10-11 14:37:00,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 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) [2024-10-11 14:37:00,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:00,801 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:00,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:01,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-11 14:37:01,006 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:01,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:01,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1601342046, now seen corresponding path program 10 times [2024-10-11 14:37:01,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:01,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795775656] [2024-10-11 14:37:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:01,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:01,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795775656] [2024-10-11 14:37:01,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795775656] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385739543] [2024-10-11 14:37:01,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:37:01,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:01,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:01,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:01,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 14:37:01,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:37:01,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:01,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:01,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:01,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:01,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385739543] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:01,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:01,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-10-11 14:37:01,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593225667] [2024-10-11 14:37:01,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:01,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 14:37:01,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 14:37:01,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:37:01,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:01,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 363 transitions, 7195 flow. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:01,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:01,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:01,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:02,281 INFO L124 PetriNetUnfolderBase]: 1204/2277 cut-off events. [2024-10-11 14:37:02,282 INFO L125 PetriNetUnfolderBase]: For 34747/34747 co-relation queries the response was YES. [2024-10-11 14:37:02,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15897 conditions, 2277 events. 1204/2277 cut-off events. For 34747/34747 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14157 event pairs, 82 based on Foata normal form. 41/2318 useless extension candidates. Maximal degree in co-relation 15830. Up to 609 conditions per place. [2024-10-11 14:37:02,296 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 137 selfloop transitions, 291 changer transitions 44/473 dead transitions. [2024-10-11 14:37:02,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 473 transitions, 9658 flow [2024-10-11 14:37:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 14:37:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-11 14:37:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 199 transitions. [2024-10-11 14:37:02,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3618181818181818 [2024-10-11 14:37:02,298 INFO L175 Difference]: Start difference. First operand has 233 places, 363 transitions, 7195 flow. Second operand 25 states and 199 transitions. [2024-10-11 14:37:02,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 473 transitions, 9658 flow [2024-10-11 14:37:02,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 473 transitions, 8788 flow, removed 44 selfloop flow, removed 21 redundant places. [2024-10-11 14:37:02,431 INFO L231 Difference]: Finished difference. Result has 241 places, 389 transitions, 7933 flow [2024-10-11 14:37:02,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6280, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7933, PETRI_PLACES=241, PETRI_TRANSITIONS=389} [2024-10-11 14:37:02,432 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 217 predicate places. [2024-10-11 14:37:02,432 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 389 transitions, 7933 flow [2024-10-11 14:37:02,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:02,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:02,432 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:02,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:02,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-11 14:37:02,633 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:02,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -204513238, now seen corresponding path program 11 times [2024-10-11 14:37:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:02,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036298193] [2024-10-11 14:37:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:02,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:02,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:02,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036298193] [2024-10-11 14:37:02,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036298193] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:02,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615636735] [2024-10-11 14:37:02,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:37:02,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:02,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:02,747 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:02,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 14:37:02,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:02,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:02,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:37:02,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:02,862 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:37:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615636735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:02,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:37:02,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-10-11 14:37:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297406994] [2024-10-11 14:37:02,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:02,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:37:02,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:02,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:37:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:37:02,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:02,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 389 transitions, 7933 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:02,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:02,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:02,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:03,263 INFO L124 PetriNetUnfolderBase]: 1055/1995 cut-off events. [2024-10-11 14:37:03,263 INFO L125 PetriNetUnfolderBase]: For 31803/31803 co-relation queries the response was YES. [2024-10-11 14:37:03,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14621 conditions, 1995 events. 1055/1995 cut-off events. For 31803/31803 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11923 event pairs, 147 based on Foata normal form. 4/1999 useless extension candidates. Maximal degree in co-relation 14550. Up to 624 conditions per place. [2024-10-11 14:37:03,279 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 187 selfloop transitions, 181 changer transitions 46/415 dead transitions. [2024-10-11 14:37:03,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 415 transitions, 9078 flow [2024-10-11 14:37:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:37:03,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:37:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2024-10-11 14:37:03,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-10-11 14:37:03,281 INFO L175 Difference]: Start difference. First operand has 241 places, 389 transitions, 7933 flow. Second operand 9 states and 79 transitions. [2024-10-11 14:37:03,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 415 transitions, 9078 flow [2024-10-11 14:37:03,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 415 transitions, 8839 flow, removed 98 selfloop flow, removed 7 redundant places. [2024-10-11 14:37:03,448 INFO L231 Difference]: Finished difference. Result has 237 places, 352 transitions, 7224 flow [2024-10-11 14:37:03,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7700, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7224, PETRI_PLACES=237, PETRI_TRANSITIONS=352} [2024-10-11 14:37:03,449 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 213 predicate places. [2024-10-11 14:37:03,449 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 352 transitions, 7224 flow [2024-10-11 14:37:03,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:03,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:03,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:03,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:03,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:03,653 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:03,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:03,654 INFO L85 PathProgramCache]: Analyzing trace with hash 783747918, now seen corresponding path program 12 times [2024-10-11 14:37:03,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:03,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15145753] [2024-10-11 14:37:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:03,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:03,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:03,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15145753] [2024-10-11 14:37:03,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15145753] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:03,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223420108] [2024-10-11 14:37:03,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:37:03,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:03,754 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:03,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 14:37:03,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 14:37:03,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:03,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:03,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:03,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:04,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223420108] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:04,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:04,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-10-11 14:37:04,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810770835] [2024-10-11 14:37:04,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:04,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 14:37:04,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:04,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 14:37:04,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2024-10-11 14:37:04,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:04,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 352 transitions, 7224 flow. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:04,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:04,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:04,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:04,962 INFO L124 PetriNetUnfolderBase]: 1362/2606 cut-off events. [2024-10-11 14:37:04,962 INFO L125 PetriNetUnfolderBase]: For 38404/38404 co-relation queries the response was YES. [2024-10-11 14:37:04,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18174 conditions, 2606 events. 1362/2606 cut-off events. For 38404/38404 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16748 event pairs, 177 based on Foata normal form. 19/2625 useless extension candidates. Maximal degree in co-relation 18105. Up to 942 conditions per place. [2024-10-11 14:37:04,979 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 215 selfloop transitions, 231 changer transitions 89/536 dead transitions. [2024-10-11 14:37:04,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 536 transitions, 11125 flow [2024-10-11 14:37:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 14:37:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-11 14:37:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 245 transitions. [2024-10-11 14:37:04,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-10-11 14:37:04,981 INFO L175 Difference]: Start difference. First operand has 237 places, 352 transitions, 7224 flow. Second operand 30 states and 245 transitions. [2024-10-11 14:37:04,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 536 transitions, 11125 flow [2024-10-11 14:37:05,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 536 transitions, 10711 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-10-11 14:37:05,139 INFO L231 Difference]: Finished difference. Result has 262 places, 358 transitions, 7761 flow [2024-10-11 14:37:05,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6922, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7761, PETRI_PLACES=262, PETRI_TRANSITIONS=358} [2024-10-11 14:37:05,139 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 238 predicate places. [2024-10-11 14:37:05,140 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 358 transitions, 7761 flow [2024-10-11 14:37:05,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:05,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:05,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:05,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:05,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:05,345 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:05,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash 953115614, now seen corresponding path program 13 times [2024-10-11 14:37:05,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:05,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213194678] [2024-10-11 14:37:05,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:05,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:05,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:05,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213194678] [2024-10-11 14:37:05,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213194678] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:05,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473927269] [2024-10-11 14:37:05,433 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:37:05,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:05,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:05,435 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:05,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 14:37:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:05,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:05,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:05,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:05,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473927269] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:05,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:05,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-10-11 14:37:05,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476089886] [2024-10-11 14:37:05,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:05,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 14:37:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:05,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 14:37:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-10-11 14:37:05,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:05,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 358 transitions, 7761 flow. Second operand has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:05,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:05,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:05,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:06,776 INFO L124 PetriNetUnfolderBase]: 1299/2485 cut-off events. [2024-10-11 14:37:06,777 INFO L125 PetriNetUnfolderBase]: For 36593/36593 co-relation queries the response was YES. [2024-10-11 14:37:06,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17128 conditions, 2485 events. 1299/2485 cut-off events. For 36593/36593 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15876 event pairs, 90 based on Foata normal form. 4/2489 useless extension candidates. Maximal degree in co-relation 17055. Up to 615 conditions per place. [2024-10-11 14:37:06,796 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 157 selfloop transitions, 249 changer transitions 53/460 dead transitions. [2024-10-11 14:37:06,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 460 transitions, 9622 flow [2024-10-11 14:37:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 14:37:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-11 14:37:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 252 transitions. [2024-10-11 14:37:06,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-10-11 14:37:06,797 INFO L175 Difference]: Start difference. First operand has 262 places, 358 transitions, 7761 flow. Second operand 30 states and 252 transitions. [2024-10-11 14:37:06,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 460 transitions, 9622 flow [2024-10-11 14:37:06,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 460 transitions, 8852 flow, removed 129 selfloop flow, removed 23 redundant places. [2024-10-11 14:37:06,958 INFO L231 Difference]: Finished difference. Result has 267 places, 348 transitions, 7320 flow [2024-10-11 14:37:06,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7054, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7320, PETRI_PLACES=267, PETRI_TRANSITIONS=348} [2024-10-11 14:37:06,959 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 243 predicate places. [2024-10-11 14:37:06,959 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 348 transitions, 7320 flow [2024-10-11 14:37:06,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:06,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:06,959 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:06,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 14:37:07,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-10-11 14:37:07,164 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:07,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1655679552, now seen corresponding path program 14 times [2024-10-11 14:37:07,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:07,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502916904] [2024-10-11 14:37:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:07,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:07,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:07,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502916904] [2024-10-11 14:37:07,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502916904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:07,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931018793] [2024-10-11 14:37:07,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:37:07,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:07,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:07,252 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:07,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 14:37:07,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:07,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:07,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:07,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:07,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:07,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931018793] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:07,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:07,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2024-10-11 14:37:07,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206599524] [2024-10-11 14:37:07,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:07,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 14:37:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 14:37:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:37:07,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:07,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 348 transitions, 7320 flow. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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) [2024-10-11 14:37:07,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:07,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:07,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:08,095 INFO L124 PetriNetUnfolderBase]: 1189/2285 cut-off events. [2024-10-11 14:37:08,095 INFO L125 PetriNetUnfolderBase]: For 33958/33958 co-relation queries the response was YES. [2024-10-11 14:37:08,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15654 conditions, 2285 events. 1189/2285 cut-off events. For 33958/33958 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 14259 event pairs, 74 based on Foata normal form. 2/2287 useless extension candidates. Maximal degree in co-relation 15582. Up to 640 conditions per place. [2024-10-11 14:37:08,111 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 148 selfloop transitions, 209 changer transitions 23/381 dead transitions. [2024-10-11 14:37:08,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 381 transitions, 8300 flow [2024-10-11 14:37:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:37:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:37:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 132 transitions. [2024-10-11 14:37:08,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35294117647058826 [2024-10-11 14:37:08,113 INFO L175 Difference]: Start difference. First operand has 267 places, 348 transitions, 7320 flow. Second operand 17 states and 132 transitions. [2024-10-11 14:37:08,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 381 transitions, 8300 flow [2024-10-11 14:37:08,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 381 transitions, 7890 flow, removed 37 selfloop flow, removed 18 redundant places. [2024-10-11 14:37:08,247 INFO L231 Difference]: Finished difference. Result has 257 places, 335 transitions, 7054 flow [2024-10-11 14:37:08,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6912, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7054, PETRI_PLACES=257, PETRI_TRANSITIONS=335} [2024-10-11 14:37:08,248 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 233 predicate places. [2024-10-11 14:37:08,248 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 335 transitions, 7054 flow [2024-10-11 14:37:08,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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) [2024-10-11 14:37:08,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:08,249 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:08,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 14:37:08,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:08,449 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:08,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:08,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1809139144, now seen corresponding path program 15 times [2024-10-11 14:37:08,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:08,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278738640] [2024-10-11 14:37:08,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:08,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:08,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:08,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278738640] [2024-10-11 14:37:08,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278738640] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:08,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742649544] [2024-10-11 14:37:08,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:37:08,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:08,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:08,549 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:08,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 14:37:08,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:37:08,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:08,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:08,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:08,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:08,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742649544] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:08,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:08,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-11 14:37:08,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074652357] [2024-10-11 14:37:08,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:08,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:37:08,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:37:08,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:37:08,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:08,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 335 transitions, 7054 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:08,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:08,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:08,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:09,454 INFO L124 PetriNetUnfolderBase]: 1481/2804 cut-off events. [2024-10-11 14:37:09,454 INFO L125 PetriNetUnfolderBase]: For 46379/46379 co-relation queries the response was YES. [2024-10-11 14:37:09,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19648 conditions, 2804 events. 1481/2804 cut-off events. For 46379/46379 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 18211 event pairs, 284 based on Foata normal form. 4/2808 useless extension candidates. Maximal degree in co-relation 19580. Up to 1190 conditions per place. [2024-10-11 14:37:09,473 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 236 selfloop transitions, 200 changer transitions 21/458 dead transitions. [2024-10-11 14:37:09,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 458 transitions, 10215 flow [2024-10-11 14:37:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:37:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:37:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 130 transitions. [2024-10-11 14:37:09,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-10-11 14:37:09,474 INFO L175 Difference]: Start difference. First operand has 257 places, 335 transitions, 7054 flow. Second operand 15 states and 130 transitions. [2024-10-11 14:37:09,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 458 transitions, 10215 flow [2024-10-11 14:37:09,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 458 transitions, 9406 flow, removed 24 selfloop flow, removed 15 redundant places. [2024-10-11 14:37:09,712 INFO L231 Difference]: Finished difference. Result has 255 places, 381 transitions, 8187 flow [2024-10-11 14:37:09,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6467, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8187, PETRI_PLACES=255, PETRI_TRANSITIONS=381} [2024-10-11 14:37:09,713 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 231 predicate places. [2024-10-11 14:37:09,713 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 381 transitions, 8187 flow [2024-10-11 14:37:09,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:09,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:09,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:09,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 14:37:09,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-10-11 14:37:09,917 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:09,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:09,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1147898274, now seen corresponding path program 16 times [2024-10-11 14:37:09,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:09,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011855182] [2024-10-11 14:37:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:09,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:10,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:10,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011855182] [2024-10-11 14:37:10,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011855182] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:10,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485956216] [2024-10-11 14:37:10,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:37:10,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:10,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:10,055 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:10,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 14:37:10,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:37:10,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:10,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:10,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:10,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:10,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485956216] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:10,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:10,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-10-11 14:37:10,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536114131] [2024-10-11 14:37:10,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:10,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 14:37:10,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:10,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 14:37:10,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-10-11 14:37:10,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:10,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 381 transitions, 8187 flow. Second operand has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:10,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:10,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:10,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:11,505 INFO L124 PetriNetUnfolderBase]: 2030/3782 cut-off events. [2024-10-11 14:37:11,506 INFO L125 PetriNetUnfolderBase]: For 61122/61122 co-relation queries the response was YES. [2024-10-11 14:37:11,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26481 conditions, 3782 events. 2030/3782 cut-off events. For 61122/61122 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 26012 event pairs, 180 based on Foata normal form. 12/3794 useless extension candidates. Maximal degree in co-relation 26409. Up to 1520 conditions per place. [2024-10-11 14:37:11,532 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 203 selfloop transitions, 369 changer transitions 76/649 dead transitions. [2024-10-11 14:37:11,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 649 transitions, 14469 flow [2024-10-11 14:37:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 14:37:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 14:37:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 249 transitions. [2024-10-11 14:37:11,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4042207792207792 [2024-10-11 14:37:11,533 INFO L175 Difference]: Start difference. First operand has 255 places, 381 transitions, 8187 flow. Second operand 28 states and 249 transitions. [2024-10-11 14:37:11,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 649 transitions, 14469 flow [2024-10-11 14:37:11,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 649 transitions, 14243 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-10-11 14:37:11,787 INFO L231 Difference]: Finished difference. Result has 287 places, 504 transitions, 12153 flow [2024-10-11 14:37:11,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=8036, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12153, PETRI_PLACES=287, PETRI_TRANSITIONS=504} [2024-10-11 14:37:11,788 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 263 predicate places. [2024-10-11 14:37:11,788 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 504 transitions, 12153 flow [2024-10-11 14:37:11,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:11,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:11,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:11,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:11,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:11,989 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:11,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash -314460586, now seen corresponding path program 17 times [2024-10-11 14:37:11,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:11,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519782830] [2024-10-11 14:37:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:11,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:12,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:12,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519782830] [2024-10-11 14:37:12,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519782830] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:12,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731293669] [2024-10-11 14:37:12,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:37:12,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:12,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:12,097 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:12,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 14:37:12,137 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:37:12,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:12,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:37:12,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:12,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:37:12,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731293669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:12,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:37:12,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-10-11 14:37:12,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392169211] [2024-10-11 14:37:12,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:12,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:37:12,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:37:12,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:37:12,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:12,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 504 transitions, 12153 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:12,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:12,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:12,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:13,006 INFO L124 PetriNetUnfolderBase]: 1916/3535 cut-off events. [2024-10-11 14:37:13,007 INFO L125 PetriNetUnfolderBase]: For 73222/73222 co-relation queries the response was YES. [2024-10-11 14:37:13,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27936 conditions, 3535 events. 1916/3535 cut-off events. For 73222/73222 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 23514 event pairs, 396 based on Foata normal form. 3/3538 useless extension candidates. Maximal degree in co-relation 27853. Up to 2459 conditions per place. [2024-10-11 14:37:13,038 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 329 selfloop transitions, 223 changer transitions 14/567 dead transitions. [2024-10-11 14:37:13,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 567 transitions, 14692 flow [2024-10-11 14:37:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:37:13,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:37:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-10-11 14:37:13,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-10-11 14:37:13,039 INFO L175 Difference]: Start difference. First operand has 287 places, 504 transitions, 12153 flow. Second operand 9 states and 86 transitions. [2024-10-11 14:37:13,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 567 transitions, 14692 flow [2024-10-11 14:37:13,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 567 transitions, 14025 flow, removed 220 selfloop flow, removed 5 redundant places. [2024-10-11 14:37:13,381 INFO L231 Difference]: Finished difference. Result has 291 places, 530 transitions, 13048 flow [2024-10-11 14:37:13,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=11563, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13048, PETRI_PLACES=291, PETRI_TRANSITIONS=530} [2024-10-11 14:37:13,381 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 267 predicate places. [2024-10-11 14:37:13,381 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 530 transitions, 13048 flow [2024-10-11 14:37:13,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:13,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:13,382 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:13,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:13,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-10-11 14:37:13,586 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:13,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:13,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1392814174, now seen corresponding path program 18 times [2024-10-11 14:37:13,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:13,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807200374] [2024-10-11 14:37:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:13,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:13,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:13,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807200374] [2024-10-11 14:37:13,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807200374] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:13,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835249891] [2024-10-11 14:37:13,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:37:13,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:13,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:13,678 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:13,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 14:37:13,718 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:37:13,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:13,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:37:13,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:13,794 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:37:13,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835249891] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:13,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:37:13,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-10-11 14:37:13,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687812747] [2024-10-11 14:37:13,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:13,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:37:13,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:13,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:37:13,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:37:13,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:13,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 530 transitions, 13048 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:13,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:13,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:13,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:14,413 INFO L124 PetriNetUnfolderBase]: 1891/3477 cut-off events. [2024-10-11 14:37:14,414 INFO L125 PetriNetUnfolderBase]: For 75159/75159 co-relation queries the response was YES. [2024-10-11 14:37:14,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27689 conditions, 3477 events. 1891/3477 cut-off events. For 75159/75159 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 22976 event pairs, 374 based on Foata normal form. 5/3482 useless extension candidates. Maximal degree in co-relation 27603. Up to 2267 conditions per place. [2024-10-11 14:37:14,443 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 305 selfloop transitions, 186 changer transitions 67/559 dead transitions. [2024-10-11 14:37:14,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 559 transitions, 14542 flow [2024-10-11 14:37:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:37:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:37:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-10-11 14:37:14,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-10-11 14:37:14,445 INFO L175 Difference]: Start difference. First operand has 291 places, 530 transitions, 13048 flow. Second operand 9 states and 82 transitions. [2024-10-11 14:37:14,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 559 transitions, 14542 flow [2024-10-11 14:37:14,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 559 transitions, 14291 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-10-11 14:37:14,785 INFO L231 Difference]: Finished difference. Result has 295 places, 476 transitions, 11831 flow [2024-10-11 14:37:14,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=12797, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11831, PETRI_PLACES=295, PETRI_TRANSITIONS=476} [2024-10-11 14:37:14,786 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 271 predicate places. [2024-10-11 14:37:14,786 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 476 transitions, 11831 flow [2024-10-11 14:37:14,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:14,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:14,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:14,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:14,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:14,991 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:14,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:14,991 INFO L85 PathProgramCache]: Analyzing trace with hash -304730538, now seen corresponding path program 19 times [2024-10-11 14:37:14,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:14,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667258416] [2024-10-11 14:37:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:15,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:15,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667258416] [2024-10-11 14:37:15,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667258416] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:15,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974709353] [2024-10-11 14:37:15,093 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:37:15,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:15,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:15,096 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:15,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 14:37:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:15,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:15,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:15,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:15,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974709353] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:15,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:15,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-11 14:37:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89755012] [2024-10-11 14:37:15,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:15,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:37:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:15,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:37:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:37:15,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:15,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 476 transitions, 11831 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:15,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:15,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:15,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:16,310 INFO L124 PetriNetUnfolderBase]: 1816/3311 cut-off events. [2024-10-11 14:37:16,311 INFO L125 PetriNetUnfolderBase]: For 75437/75437 co-relation queries the response was YES. [2024-10-11 14:37:16,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26342 conditions, 3311 events. 1816/3311 cut-off events. For 75437/75437 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 21338 event pairs, 223 based on Foata normal form. 6/3317 useless extension candidates. Maximal degree in co-relation 26255. Up to 1495 conditions per place. [2024-10-11 14:37:16,339 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 229 selfloop transitions, 280 changer transitions 30/540 dead transitions. [2024-10-11 14:37:16,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 540 transitions, 13776 flow [2024-10-11 14:37:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 14:37:16,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 14:37:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 149 transitions. [2024-10-11 14:37:16,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3386363636363636 [2024-10-11 14:37:16,340 INFO L175 Difference]: Start difference. First operand has 295 places, 476 transitions, 11831 flow. Second operand 20 states and 149 transitions. [2024-10-11 14:37:16,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 540 transitions, 13776 flow [2024-10-11 14:37:16,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 540 transitions, 13143 flow, removed 15 selfloop flow, removed 22 redundant places. [2024-10-11 14:37:16,689 INFO L231 Difference]: Finished difference. Result has 292 places, 481 transitions, 11967 flow [2024-10-11 14:37:16,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=11206, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11967, PETRI_PLACES=292, PETRI_TRANSITIONS=481} [2024-10-11 14:37:16,690 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 268 predicate places. [2024-10-11 14:37:16,690 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 481 transitions, 11967 flow [2024-10-11 14:37:16,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:16,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:16,691 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:16,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-11 14:37:16,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-10-11 14:37:16,895 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:16,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:16,895 INFO L85 PathProgramCache]: Analyzing trace with hash -359068044, now seen corresponding path program 20 times [2024-10-11 14:37:16,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:16,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158110796] [2024-10-11 14:37:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:16,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:17,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158110796] [2024-10-11 14:37:17,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158110796] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721409453] [2024-10-11 14:37:17,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:37:17,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:17,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:17,041 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:17,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-11 14:37:17,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:17,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:17,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:37:17,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:17,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:17,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721409453] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:17,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:17,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-10-11 14:37:17,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962090493] [2024-10-11 14:37:17,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:17,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 14:37:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:17,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 14:37:17,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-10-11 14:37:17,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:17,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 481 transitions, 11967 flow. Second operand has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:17,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:17,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:17,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:18,370 INFO L124 PetriNetUnfolderBase]: 2004/3615 cut-off events. [2024-10-11 14:37:18,370 INFO L125 PetriNetUnfolderBase]: For 88591/88591 co-relation queries the response was YES. [2024-10-11 14:37:18,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30310 conditions, 3615 events. 2004/3615 cut-off events. For 88591/88591 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 23550 event pairs, 235 based on Foata normal form. 8/3623 useless extension candidates. Maximal degree in co-relation 30221. Up to 1494 conditions per place. [2024-10-11 14:37:18,399 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 249 selfloop transitions, 364 changer transitions 22/636 dead transitions. [2024-10-11 14:37:18,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 636 transitions, 16742 flow [2024-10-11 14:37:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:37:18,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:37:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 135 transitions. [2024-10-11 14:37:18,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3609625668449198 [2024-10-11 14:37:18,400 INFO L175 Difference]: Start difference. First operand has 292 places, 481 transitions, 11967 flow. Second operand 17 states and 135 transitions. [2024-10-11 14:37:18,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 636 transitions, 16742 flow [2024-10-11 14:37:18,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 636 transitions, 16093 flow, removed 19 selfloop flow, removed 15 redundant places. [2024-10-11 14:37:18,735 INFO L231 Difference]: Finished difference. Result has 292 places, 564 transitions, 14594 flow [2024-10-11 14:37:18,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=11443, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=14594, PETRI_PLACES=292, PETRI_TRANSITIONS=564} [2024-10-11 14:37:18,736 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 268 predicate places. [2024-10-11 14:37:18,736 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 564 transitions, 14594 flow [2024-10-11 14:37:18,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:18,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:18,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:18,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-11 14:37:18,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-10-11 14:37:18,937 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:18,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:18,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1273909342, now seen corresponding path program 21 times [2024-10-11 14:37:18,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:18,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168701864] [2024-10-11 14:37:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:18,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:19,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:19,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168701864] [2024-10-11 14:37:19,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168701864] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:19,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371203452] [2024-10-11 14:37:19,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:37:19,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:19,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:19,023 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:19,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-11 14:37:19,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:37:19,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:19,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:19,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:19,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:19,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371203452] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:19,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:19,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-11 14:37:19,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927555022] [2024-10-11 14:37:19,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:19,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:37:19,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:19,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:37:19,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:37:19,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:19,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 564 transitions, 14594 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:19,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:19,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:19,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:20,230 INFO L124 PetriNetUnfolderBase]: 1970/3583 cut-off events. [2024-10-11 14:37:20,230 INFO L125 PetriNetUnfolderBase]: For 87055/87055 co-relation queries the response was YES. [2024-10-11 14:37:20,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30367 conditions, 3583 events. 1970/3583 cut-off events. For 87055/87055 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 23456 event pairs, 316 based on Foata normal form. 6/3589 useless extension candidates. Maximal degree in co-relation 30277. Up to 2104 conditions per place. [2024-10-11 14:37:20,271 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 340 selfloop transitions, 202 changer transitions 58/601 dead transitions. [2024-10-11 14:37:20,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 601 transitions, 16143 flow [2024-10-11 14:37:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 14:37:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 14:37:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-10-11 14:37:20,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3951048951048951 [2024-10-11 14:37:20,272 INFO L175 Difference]: Start difference. First operand has 292 places, 564 transitions, 14594 flow. Second operand 13 states and 113 transitions. [2024-10-11 14:37:20,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 601 transitions, 16143 flow [2024-10-11 14:37:20,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 601 transitions, 16036 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-10-11 14:37:20,710 INFO L231 Difference]: Finished difference. Result has 295 places, 516 transitions, 13448 flow [2024-10-11 14:37:20,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=14491, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13448, PETRI_PLACES=295, PETRI_TRANSITIONS=516} [2024-10-11 14:37:20,711 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 271 predicate places. [2024-10-11 14:37:20,711 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 516 transitions, 13448 flow [2024-10-11 14:37:20,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:20,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:20,712 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:20,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:20,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,23 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:20,913 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:20,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:20,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1390235252, now seen corresponding path program 22 times [2024-10-11 14:37:20,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:20,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571332132] [2024-10-11 14:37:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:20,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:21,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:21,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571332132] [2024-10-11 14:37:21,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571332132] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:21,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057974726] [2024-10-11 14:37:21,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:37:21,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:21,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:21,020 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:21,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-11 14:37:21,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:37:21,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:21,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:21,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:21,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:21,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057974726] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:21,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:21,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-11 14:37:21,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466199236] [2024-10-11 14:37:21,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:21,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:37:21,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:21,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:37:21,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:37:21,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:21,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 516 transitions, 13448 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:21,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:21,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:21,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:22,703 INFO L124 PetriNetUnfolderBase]: 2438/4534 cut-off events. [2024-10-11 14:37:22,704 INFO L125 PetriNetUnfolderBase]: For 101950/101950 co-relation queries the response was YES. [2024-10-11 14:37:22,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35677 conditions, 4534 events. 2438/4534 cut-off events. For 101950/101950 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 32035 event pairs, 146 based on Foata normal form. 15/4549 useless extension candidates. Maximal degree in co-relation 35588. Up to 920 conditions per place. [2024-10-11 14:37:22,741 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 235 selfloop transitions, 293 changer transitions 178/707 dead transitions. [2024-10-11 14:37:22,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 707 transitions, 17942 flow [2024-10-11 14:37:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 14:37:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-11 14:37:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 231 transitions. [2024-10-11 14:37:22,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-10-11 14:37:22,742 INFO L175 Difference]: Start difference. First operand has 295 places, 516 transitions, 13448 flow. Second operand 30 states and 231 transitions. [2024-10-11 14:37:22,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 707 transitions, 17942 flow [2024-10-11 14:37:23,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 707 transitions, 17630 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-11 14:37:23,183 INFO L231 Difference]: Finished difference. Result has 313 places, 460 transitions, 12617 flow [2024-10-11 14:37:23,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=13176, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12617, PETRI_PLACES=313, PETRI_TRANSITIONS=460} [2024-10-11 14:37:23,184 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 289 predicate places. [2024-10-11 14:37:23,184 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 460 transitions, 12617 flow [2024-10-11 14:37:23,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:23,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:23,184 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:23,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:23,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,24 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:23,389 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:23,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:23,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1703765110, now seen corresponding path program 23 times [2024-10-11 14:37:23,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:23,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635815876] [2024-10-11 14:37:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:23,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:23,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635815876] [2024-10-11 14:37:23,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635815876] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602078953] [2024-10-11 14:37:23,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:37:23,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:23,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:23,497 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:23,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-11 14:37:23,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:23,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:23,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:37:23,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:23,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602078953] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:23,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:23,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-10-11 14:37:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164430598] [2024-10-11 14:37:23,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:23,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 14:37:23,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 14:37:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-10-11 14:37:23,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:23,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 460 transitions, 12617 flow. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 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) [2024-10-11 14:37:23,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:23,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:23,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:24,409 INFO L124 PetriNetUnfolderBase]: 1385/2776 cut-off events. [2024-10-11 14:37:24,409 INFO L125 PetriNetUnfolderBase]: For 60671/60671 co-relation queries the response was YES. [2024-10-11 14:37:24,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23316 conditions, 2776 events. 1385/2776 cut-off events. For 60671/60671 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 19339 event pairs, 161 based on Foata normal form. 9/2785 useless extension candidates. Maximal degree in co-relation 23222. Up to 965 conditions per place. [2024-10-11 14:37:24,441 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 154 selfloop transitions, 113 changer transitions 229/497 dead transitions. [2024-10-11 14:37:24,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 497 transitions, 14015 flow [2024-10-11 14:37:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:37:24,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:37:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 119 transitions. [2024-10-11 14:37:24,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-10-11 14:37:24,442 INFO L175 Difference]: Start difference. First operand has 313 places, 460 transitions, 12617 flow. Second operand 15 states and 119 transitions. [2024-10-11 14:37:24,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 497 transitions, 14015 flow [2024-10-11 14:37:24,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 497 transitions, 13356 flow, removed 38 selfloop flow, removed 21 redundant places. [2024-10-11 14:37:24,729 INFO L231 Difference]: Finished difference. Result has 287 places, 253 transitions, 6298 flow [2024-10-11 14:37:24,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=11993, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6298, PETRI_PLACES=287, PETRI_TRANSITIONS=253} [2024-10-11 14:37:24,730 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 263 predicate places. [2024-10-11 14:37:24,730 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 253 transitions, 6298 flow [2024-10-11 14:37:24,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 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) [2024-10-11 14:37:24,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:24,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:24,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:24,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-10-11 14:37:24,931 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:24,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1823092894, now seen corresponding path program 24 times [2024-10-11 14:37:24,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:24,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918499820] [2024-10-11 14:37:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:24,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:25,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918499820] [2024-10-11 14:37:25,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918499820] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322772858] [2024-10-11 14:37:25,039 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:37:25,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:25,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:25,040 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:25,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-11 14:37:25,081 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:37:25,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:25,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:37:25,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:25,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:25,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322772858] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:25,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:25,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-10-11 14:37:25,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733888072] [2024-10-11 14:37:25,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:25,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 14:37:25,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:25,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 14:37:25,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-10-11 14:37:25,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:25,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 253 transitions, 6298 flow. Second operand has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:25,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:25,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:25,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:26,133 INFO L124 PetriNetUnfolderBase]: 803/1755 cut-off events. [2024-10-11 14:37:26,133 INFO L125 PetriNetUnfolderBase]: For 29362/29362 co-relation queries the response was YES. [2024-10-11 14:37:26,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12424 conditions, 1755 events. 803/1755 cut-off events. For 29362/29362 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11765 event pairs, 150 based on Foata normal form. 11/1766 useless extension candidates. Maximal degree in co-relation 12339. Up to 895 conditions per place. [2024-10-11 14:37:26,146 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 147 selfloop transitions, 143 changer transitions 32/323 dead transitions. [2024-10-11 14:37:26,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 323 transitions, 7634 flow [2024-10-11 14:37:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 14:37:26,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-11 14:37:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 226 transitions. [2024-10-11 14:37:26,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-10-11 14:37:26,148 INFO L175 Difference]: Start difference. First operand has 287 places, 253 transitions, 6298 flow. Second operand 32 states and 226 transitions. [2024-10-11 14:37:26,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 323 transitions, 7634 flow [2024-10-11 14:37:26,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 323 transitions, 6696 flow, removed 90 selfloop flow, removed 35 redundant places. [2024-10-11 14:37:26,240 INFO L231 Difference]: Finished difference. Result has 268 places, 249 transitions, 5631 flow [2024-10-11 14:37:26,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5363, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=5631, PETRI_PLACES=268, PETRI_TRANSITIONS=249} [2024-10-11 14:37:26,241 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 244 predicate places. [2024-10-11 14:37:26,241 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 249 transitions, 5631 flow [2024-10-11 14:37:26,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:26,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:26,241 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:26,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:26,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-10-11 14:37:26,442 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:26,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1757341546, now seen corresponding path program 25 times [2024-10-11 14:37:26,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:26,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206630021] [2024-10-11 14:37:26,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:26,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:26,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:26,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206630021] [2024-10-11 14:37:26,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206630021] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:26,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558643044] [2024-10-11 14:37:26,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:37:26,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:26,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:26,554 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:26,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-11 14:37:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:26,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:26,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:26,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:26,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558643044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:26,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:26,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-11 14:37:26,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254067523] [2024-10-11 14:37:26,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:26,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:37:26,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:26,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:37:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:37:26,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:26,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 249 transitions, 5631 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:26,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:26,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:26,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:27,191 INFO L124 PetriNetUnfolderBase]: 724/1565 cut-off events. [2024-10-11 14:37:27,192 INFO L125 PetriNetUnfolderBase]: For 21440/21440 co-relation queries the response was YES. [2024-10-11 14:37:27,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10462 conditions, 1565 events. 724/1565 cut-off events. For 21440/21440 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10151 event pairs, 149 based on Foata normal form. 6/1571 useless extension candidates. Maximal degree in co-relation 10387. Up to 777 conditions per place. [2024-10-11 14:37:27,203 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 145 selfloop transitions, 85 changer transitions 40/271 dead transitions. [2024-10-11 14:37:27,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 271 transitions, 6312 flow [2024-10-11 14:37:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:37:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:37:27,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 95 transitions. [2024-10-11 14:37:27,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-10-11 14:37:27,207 INFO L175 Difference]: Start difference. First operand has 268 places, 249 transitions, 5631 flow. Second operand 12 states and 95 transitions. [2024-10-11 14:37:27,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 271 transitions, 6312 flow [2024-10-11 14:37:27,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 271 transitions, 5890 flow, removed 50 selfloop flow, removed 20 redundant places. [2024-10-11 14:37:27,300 INFO L231 Difference]: Finished difference. Result has 253 places, 219 transitions, 4635 flow [2024-10-11 14:37:27,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5217, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4635, PETRI_PLACES=253, PETRI_TRANSITIONS=219} [2024-10-11 14:37:27,301 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 229 predicate places. [2024-10-11 14:37:27,301 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 219 transitions, 4635 flow [2024-10-11 14:37:27,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:27,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:27,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:27,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-11 14:37:27,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,27 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:27,505 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:27,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:27,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1550966388, now seen corresponding path program 26 times [2024-10-11 14:37:27,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:27,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811738359] [2024-10-11 14:37:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:27,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:27,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:27,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811738359] [2024-10-11 14:37:27,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811738359] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:27,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360918303] [2024-10-11 14:37:27,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:37:27,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:27,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:27,609 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:27,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-11 14:37:27,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:27,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:27,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:27,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:27,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360918303] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:27,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:27,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-10-11 14:37:27,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957173726] [2024-10-11 14:37:27,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:27,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 14:37:27,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 14:37:27,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:37:27,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:27,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 219 transitions, 4635 flow. Second operand has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:27,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:27,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:27,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:28,368 INFO L124 PetriNetUnfolderBase]: 587/1216 cut-off events. [2024-10-11 14:37:28,369 INFO L125 PetriNetUnfolderBase]: For 16916/16916 co-relation queries the response was YES. [2024-10-11 14:37:28,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8352 conditions, 1216 events. 587/1216 cut-off events. For 16916/16916 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7071 event pairs, 55 based on Foata normal form. 8/1224 useless extension candidates. Maximal degree in co-relation 8278. Up to 356 conditions per place. [2024-10-11 14:37:28,377 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 125 selfloop transitions, 99 changer transitions 26/251 dead transitions. [2024-10-11 14:37:28,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 251 transitions, 5230 flow [2024-10-11 14:37:28,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 14:37:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 14:37:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 138 transitions. [2024-10-11 14:37:28,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-10-11 14:37:28,380 INFO L175 Difference]: Start difference. First operand has 253 places, 219 transitions, 4635 flow. Second operand 18 states and 138 transitions. [2024-10-11 14:37:28,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 251 transitions, 5230 flow [2024-10-11 14:37:28,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 251 transitions, 4880 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-10-11 14:37:28,429 INFO L231 Difference]: Finished difference. Result has 240 places, 205 transitions, 4177 flow [2024-10-11 14:37:28,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4209, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4177, PETRI_PLACES=240, PETRI_TRANSITIONS=205} [2024-10-11 14:37:28,430 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 216 predicate places. [2024-10-11 14:37:28,431 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 205 transitions, 4177 flow [2024-10-11 14:37:28,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:28,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:28,431 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:28,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:28,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,28 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:28,633 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:28,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash 220769216, now seen corresponding path program 27 times [2024-10-11 14:37:28,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:28,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50376702] [2024-10-11 14:37:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:28,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:28,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50376702] [2024-10-11 14:37:28,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50376702] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978342008] [2024-10-11 14:37:28,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:37:28,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:28,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:28,755 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:28,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-11 14:37:28,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:37:28,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:28,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:37:28,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:28,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:29,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978342008] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:29,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:29,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-10-11 14:37:29,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124616951] [2024-10-11 14:37:29,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:29,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 14:37:29,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:29,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 14:37:29,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2024-10-11 14:37:29,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:29,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 205 transitions, 4177 flow. Second operand has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:29,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:29,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:29,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:29,548 INFO L124 PetriNetUnfolderBase]: 718/1489 cut-off events. [2024-10-11 14:37:29,548 INFO L125 PetriNetUnfolderBase]: For 19412/19412 co-relation queries the response was YES. [2024-10-11 14:37:29,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9805 conditions, 1489 events. 718/1489 cut-off events. For 19412/19412 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9079 event pairs, 115 based on Foata normal form. 3/1492 useless extension candidates. Maximal degree in co-relation 9734. Up to 540 conditions per place. [2024-10-11 14:37:29,558 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 130 selfloop transitions, 147 changer transitions 15/293 dead transitions. [2024-10-11 14:37:29,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 293 transitions, 6070 flow [2024-10-11 14:37:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 14:37:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 14:37:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 164 transitions. [2024-10-11 14:37:29,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-10-11 14:37:29,559 INFO L175 Difference]: Start difference. First operand has 240 places, 205 transitions, 4177 flow. Second operand 22 states and 164 transitions. [2024-10-11 14:37:29,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 293 transitions, 6070 flow [2024-10-11 14:37:29,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 293 transitions, 5833 flow, removed 13 selfloop flow, removed 15 redundant places. [2024-10-11 14:37:29,614 INFO L231 Difference]: Finished difference. Result has 244 places, 234 transitions, 5142 flow [2024-10-11 14:37:29,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3995, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5142, PETRI_PLACES=244, PETRI_TRANSITIONS=234} [2024-10-11 14:37:29,614 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 220 predicate places. [2024-10-11 14:37:29,614 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 234 transitions, 5142 flow [2024-10-11 14:37:29,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:29,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:29,615 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:29,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:29,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-10-11 14:37:29,818 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:29,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:29,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1563133939, now seen corresponding path program 28 times [2024-10-11 14:37:29,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:29,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056596810] [2024-10-11 14:37:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:29,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:29,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:29,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056596810] [2024-10-11 14:37:29,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056596810] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:29,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386852078] [2024-10-11 14:37:29,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:37:29,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:29,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:29,865 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:29,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-11 14:37:29,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:37:29,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:29,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:37:29,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:29,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:29,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386852078] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:29,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:29,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-10-11 14:37:29,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594525037] [2024-10-11 14:37:29,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:29,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:37:29,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:29,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:37:29,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:37:29,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:37:29,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 234 transitions, 5142 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:29,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:29,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:37:29,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:30,164 INFO L124 PetriNetUnfolderBase]: 517/1190 cut-off events. [2024-10-11 14:37:30,164 INFO L125 PetriNetUnfolderBase]: For 18635/18635 co-relation queries the response was YES. [2024-10-11 14:37:30,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 1190 events. 517/1190 cut-off events. For 18635/18635 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7628 event pairs, 104 based on Foata normal form. 14/1190 useless extension candidates. Maximal degree in co-relation 8329. Up to 805 conditions per place. [2024-10-11 14:37:30,173 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 136 selfloop transitions, 36 changer transitions 2/247 dead transitions. [2024-10-11 14:37:30,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 247 transitions, 5427 flow [2024-10-11 14:37:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:37:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:37:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-10-11 14:37:30,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2024-10-11 14:37:30,174 INFO L175 Difference]: Start difference. First operand has 244 places, 234 transitions, 5142 flow. Second operand 7 states and 86 transitions. [2024-10-11 14:37:30,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 247 transitions, 5427 flow [2024-10-11 14:37:30,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 247 transitions, 5136 flow, removed 44 selfloop flow, removed 18 redundant places. [2024-10-11 14:37:30,226 INFO L231 Difference]: Finished difference. Result has 226 places, 226 transitions, 4761 flow [2024-10-11 14:37:30,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4680, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4761, PETRI_PLACES=226, PETRI_TRANSITIONS=226} [2024-10-11 14:37:30,227 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 202 predicate places. [2024-10-11 14:37:30,227 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 226 transitions, 4761 flow [2024-10-11 14:37:30,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:30,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:30,227 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:30,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:30,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,30 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:30,432 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:30,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash -534876284, now seen corresponding path program 29 times [2024-10-11 14:37:30,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:30,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132105893] [2024-10-11 14:37:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:30,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:30,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:30,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132105893] [2024-10-11 14:37:30,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132105893] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:30,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136218775] [2024-10-11 14:37:30,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:37:30,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:30,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:30,466 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:30,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-11 14:37:30,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:30,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:30,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:37:30,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:30,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:30,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136218775] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:30,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:30,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-10-11 14:37:30,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910603331] [2024-10-11 14:37:30,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:30,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 14:37:30,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:30,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 14:37:30,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:37:30,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:37:30,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 226 transitions, 4761 flow. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:30,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:30,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:37:30,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:30,808 INFO L124 PetriNetUnfolderBase]: 521/1123 cut-off events. [2024-10-11 14:37:30,809 INFO L125 PetriNetUnfolderBase]: For 18926/18926 co-relation queries the response was YES. [2024-10-11 14:37:30,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8124 conditions, 1123 events. 521/1123 cut-off events. For 18926/18926 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6721 event pairs, 151 based on Foata normal form. 12/1126 useless extension candidates. Maximal degree in co-relation 8054. Up to 527 conditions per place. [2024-10-11 14:37:30,817 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 141 selfloop transitions, 45 changer transitions 1/257 dead transitions. [2024-10-11 14:37:30,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 257 transitions, 5290 flow [2024-10-11 14:37:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:37:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:37:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-10-11 14:37:30,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-10-11 14:37:30,818 INFO L175 Difference]: Start difference. First operand has 226 places, 226 transitions, 4761 flow. Second operand 12 states and 123 transitions. [2024-10-11 14:37:30,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 257 transitions, 5290 flow [2024-10-11 14:37:30,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 257 transitions, 5208 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-10-11 14:37:30,874 INFO L231 Difference]: Finished difference. Result has 234 places, 231 transitions, 4900 flow [2024-10-11 14:37:30,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4577, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4900, PETRI_PLACES=234, PETRI_TRANSITIONS=231} [2024-10-11 14:37:30,874 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 210 predicate places. [2024-10-11 14:37:30,874 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 231 transitions, 4900 flow [2024-10-11 14:37:30,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:30,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:30,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:30,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:31,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-10-11 14:37:31,076 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:31,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:31,076 INFO L85 PathProgramCache]: Analyzing trace with hash 262446639, now seen corresponding path program 30 times [2024-10-11 14:37:31,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:31,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232509110] [2024-10-11 14:37:31,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:31,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:31,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232509110] [2024-10-11 14:37:31,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232509110] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:31,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98985051] [2024-10-11 14:37:31,107 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:37:31,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:31,108 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:31,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-11 14:37:31,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 14:37:31,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:31,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 14:37:31,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:31,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:31,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98985051] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:31,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:31,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 11] total 23 [2024-10-11 14:37:31,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449236577] [2024-10-11 14:37:31,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:31,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:37:31,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:31,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:37:31,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:37:31,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:31,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 231 transitions, 4900 flow. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 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) [2024-10-11 14:37:31,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:31,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:31,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:32,203 INFO L124 PetriNetUnfolderBase]: 794/1607 cut-off events. [2024-10-11 14:37:32,203 INFO L125 PetriNetUnfolderBase]: For 27033/27033 co-relation queries the response was YES. [2024-10-11 14:37:32,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11341 conditions, 1607 events. 794/1607 cut-off events. For 27033/27033 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9725 event pairs, 187 based on Foata normal form. 28/1635 useless extension candidates. Maximal degree in co-relation 11267. Up to 582 conditions per place. [2024-10-11 14:37:32,214 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 135 selfloop transitions, 190 changer transitions 25/351 dead transitions. [2024-10-11 14:37:32,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 351 transitions, 7268 flow [2024-10-11 14:37:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 14:37:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-11 14:37:32,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 245 transitions. [2024-10-11 14:37:32,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34801136363636365 [2024-10-11 14:37:32,216 INFO L175 Difference]: Start difference. First operand has 234 places, 231 transitions, 4900 flow. Second operand 32 states and 245 transitions. [2024-10-11 14:37:32,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 351 transitions, 7268 flow [2024-10-11 14:37:32,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 351 transitions, 7135 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-10-11 14:37:32,299 INFO L231 Difference]: Finished difference. Result has 263 places, 279 transitions, 6364 flow [2024-10-11 14:37:32,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4565, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6364, PETRI_PLACES=263, PETRI_TRANSITIONS=279} [2024-10-11 14:37:32,300 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 239 predicate places. [2024-10-11 14:37:32,300 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 279 transitions, 6364 flow [2024-10-11 14:37:32,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 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) [2024-10-11 14:37:32,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:32,300 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:32,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:32,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-10-11 14:37:32,501 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:32,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:32,502 INFO L85 PathProgramCache]: Analyzing trace with hash 751160625, now seen corresponding path program 31 times [2024-10-11 14:37:32,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:32,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810836599] [2024-10-11 14:37:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:32,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:32,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810836599] [2024-10-11 14:37:32,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810836599] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543794916] [2024-10-11 14:37:32,617 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:37:32,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:32,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:32,622 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:32,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-11 14:37:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:32,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:37:32,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:32,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543794916] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:33,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:33,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-10-11 14:37:33,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899828185] [2024-10-11 14:37:33,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:33,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 14:37:33,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:33,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 14:37:33,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2024-10-11 14:37:33,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:33,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 279 transitions, 6364 flow. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:33,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:33,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:33,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:33,546 INFO L124 PetriNetUnfolderBase]: 799/1588 cut-off events. [2024-10-11 14:37:33,546 INFO L125 PetriNetUnfolderBase]: For 29713/29713 co-relation queries the response was YES. [2024-10-11 14:37:33,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12032 conditions, 1588 events. 799/1588 cut-off events. For 29713/29713 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9344 event pairs, 56 based on Foata normal form. 2/1590 useless extension candidates. Maximal degree in co-relation 11949. Up to 413 conditions per place. [2024-10-11 14:37:33,558 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 133 selfloop transitions, 183 changer transitions 19/336 dead transitions. [2024-10-11 14:37:33,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 336 transitions, 7641 flow [2024-10-11 14:37:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 14:37:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 14:37:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 148 transitions. [2024-10-11 14:37:33,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-10-11 14:37:33,559 INFO L175 Difference]: Start difference. First operand has 263 places, 279 transitions, 6364 flow. Second operand 18 states and 148 transitions. [2024-10-11 14:37:33,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 336 transitions, 7641 flow [2024-10-11 14:37:33,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 336 transitions, 7263 flow, removed 120 selfloop flow, removed 17 redundant places. [2024-10-11 14:37:33,671 INFO L231 Difference]: Finished difference. Result has 262 places, 283 transitions, 6638 flow [2024-10-11 14:37:33,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6638, PETRI_PLACES=262, PETRI_TRANSITIONS=283} [2024-10-11 14:37:33,672 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 238 predicate places. [2024-10-11 14:37:33,672 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 283 transitions, 6638 flow [2024-10-11 14:37:33,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:33,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:33,672 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:33,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:33,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,33 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:33,874 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:33,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1556943189, now seen corresponding path program 32 times [2024-10-11 14:37:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:33,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63387257] [2024-10-11 14:37:33,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:33,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:33,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:33,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63387257] [2024-10-11 14:37:33,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63387257] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:33,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037594715] [2024-10-11 14:37:33,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:37:33,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:33,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:33,969 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:33,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-11 14:37:34,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:34,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:34,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 14:37:34,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:34,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:34,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037594715] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:34,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:34,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 27 [2024-10-11 14:37:34,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107116015] [2024-10-11 14:37:34,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:34,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 14:37:34,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 14:37:34,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2024-10-11 14:37:34,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:34,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 283 transitions, 6638 flow. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:34,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:34,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:34,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:35,186 INFO L124 PetriNetUnfolderBase]: 1060/2046 cut-off events. [2024-10-11 14:37:35,186 INFO L125 PetriNetUnfolderBase]: For 43522/43522 co-relation queries the response was YES. [2024-10-11 14:37:35,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 2046 events. 1060/2046 cut-off events. For 43522/43522 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12376 event pairs, 72 based on Foata normal form. 6/2052 useless extension candidates. Maximal degree in co-relation 16685. Up to 468 conditions per place. [2024-10-11 14:37:35,201 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 183 selfloop transitions, 199 changer transitions 81/464 dead transitions. [2024-10-11 14:37:35,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 464 transitions, 11230 flow [2024-10-11 14:37:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 14:37:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 14:37:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 163 transitions. [2024-10-11 14:37:35,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3704545454545455 [2024-10-11 14:37:35,202 INFO L175 Difference]: Start difference. First operand has 262 places, 283 transitions, 6638 flow. Second operand 20 states and 163 transitions. [2024-10-11 14:37:35,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 464 transitions, 11230 flow [2024-10-11 14:37:35,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 464 transitions, 10562 flow, removed 84 selfloop flow, removed 11 redundant places. [2024-10-11 14:37:35,323 INFO L231 Difference]: Finished difference. Result has 274 places, 332 transitions, 8057 flow [2024-10-11 14:37:35,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6210, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8057, PETRI_PLACES=274, PETRI_TRANSITIONS=332} [2024-10-11 14:37:35,323 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 250 predicate places. [2024-10-11 14:37:35,323 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 332 transitions, 8057 flow [2024-10-11 14:37:35,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:35,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:35,323 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:35,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-10-11 14:37:35,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,34 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:35,524 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:35,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1554113177, now seen corresponding path program 33 times [2024-10-11 14:37:35,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:35,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323357486] [2024-10-11 14:37:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:35,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:35,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:35,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323357486] [2024-10-11 14:37:35,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323357486] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:35,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898486011] [2024-10-11 14:37:35,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:37:35,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:35,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:35,628 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:35,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-11 14:37:35,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:37:35,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:35,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:37:35,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:35,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:35,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898486011] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:35,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:35,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-10-11 14:37:35,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183901292] [2024-10-11 14:37:35,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:35,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 14:37:35,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:35,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 14:37:35,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2024-10-11 14:37:35,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:35,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 332 transitions, 8057 flow. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:35,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:35,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:35,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:36,607 INFO L124 PetriNetUnfolderBase]: 916/1764 cut-off events. [2024-10-11 14:37:36,608 INFO L125 PetriNetUnfolderBase]: For 40334/40334 co-relation queries the response was YES. [2024-10-11 14:37:36,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14957 conditions, 1764 events. 916/1764 cut-off events. For 40334/40334 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10186 event pairs, 44 based on Foata normal form. 3/1767 useless extension candidates. Maximal degree in co-relation 14870. Up to 502 conditions per place. [2024-10-11 14:37:36,622 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 201 selfloop transitions, 139 changer transitions 40/381 dead transitions. [2024-10-11 14:37:36,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 381 transitions, 9312 flow [2024-10-11 14:37:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:37:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:37:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 131 transitions. [2024-10-11 14:37:36,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-10-11 14:37:36,623 INFO L175 Difference]: Start difference. First operand has 274 places, 332 transitions, 8057 flow. Second operand 16 states and 131 transitions. [2024-10-11 14:37:36,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 381 transitions, 9312 flow [2024-10-11 14:37:36,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 381 transitions, 8890 flow, removed 61 selfloop flow, removed 13 redundant places. [2024-10-11 14:37:36,748 INFO L231 Difference]: Finished difference. Result has 271 places, 309 transitions, 7296 flow [2024-10-11 14:37:36,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7651, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7296, PETRI_PLACES=271, PETRI_TRANSITIONS=309} [2024-10-11 14:37:36,749 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 247 predicate places. [2024-10-11 14:37:36,749 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 309 transitions, 7296 flow [2024-10-11 14:37:36,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:36,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:36,749 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:36,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-10-11 14:37:36,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-10-11 14:37:36,950 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:36,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1591870907, now seen corresponding path program 34 times [2024-10-11 14:37:36,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:36,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238557111] [2024-10-11 14:37:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:36,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:37,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238557111] [2024-10-11 14:37:37,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238557111] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193335671] [2024-10-11 14:37:37,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:37:37,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:37,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:37,037 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:37,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-11 14:37:37,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:37:37,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:37,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:37:37,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:37,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:37,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193335671] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:37,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:37,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-10-11 14:37:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290365869] [2024-10-11 14:37:37,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:37,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 14:37:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:37,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 14:37:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2024-10-11 14:37:37,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:37,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 309 transitions, 7296 flow. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:37,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:37,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:37,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:38,052 INFO L124 PetriNetUnfolderBase]: 919/1794 cut-off events. [2024-10-11 14:37:38,052 INFO L125 PetriNetUnfolderBase]: For 39292/39292 co-relation queries the response was YES. [2024-10-11 14:37:38,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14440 conditions, 1794 events. 919/1794 cut-off events. For 39292/39292 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10727 event pairs, 20 based on Foata normal form. 9/1803 useless extension candidates. Maximal degree in co-relation 14355. Up to 372 conditions per place. [2024-10-11 14:37:38,065 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 89 selfloop transitions, 99 changer transitions 186/375 dead transitions. [2024-10-11 14:37:38,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 375 transitions, 8793 flow [2024-10-11 14:37:38,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 14:37:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 14:37:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 145 transitions. [2024-10-11 14:37:38,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-10-11 14:37:38,066 INFO L175 Difference]: Start difference. First operand has 271 places, 309 transitions, 7296 flow. Second operand 18 states and 145 transitions. [2024-10-11 14:37:38,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 375 transitions, 8793 flow [2024-10-11 14:37:38,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 375 transitions, 8109 flow, removed 14 selfloop flow, removed 20 redundant places. [2024-10-11 14:37:38,174 INFO L231 Difference]: Finished difference. Result has 264 places, 159 transitions, 3514 flow [2024-10-11 14:37:38,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6666, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3514, PETRI_PLACES=264, PETRI_TRANSITIONS=159} [2024-10-11 14:37:38,175 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 240 predicate places. [2024-10-11 14:37:38,175 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 159 transitions, 3514 flow [2024-10-11 14:37:38,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:38,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:38,175 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:38,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:38,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,36 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:38,376 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:38,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash 223916005, now seen corresponding path program 35 times [2024-10-11 14:37:38,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:38,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779300048] [2024-10-11 14:37:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:38,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:38,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:38,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779300048] [2024-10-11 14:37:38,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779300048] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:38,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337265094] [2024-10-11 14:37:38,475 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:37:38,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:38,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:38,477 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:38,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-11 14:37:38,510 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:37:38,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:38,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:37:38,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:37:38,602 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:37:38,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337265094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:38,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:37:38,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2024-10-11 14:37:38,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606757716] [2024-10-11 14:37:38,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:38,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:37:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:37:38,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:37:38,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:38,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 159 transitions, 3514 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:38,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:38,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:38,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:38,883 INFO L124 PetriNetUnfolderBase]: 431/919 cut-off events. [2024-10-11 14:37:38,883 INFO L125 PetriNetUnfolderBase]: For 19594/19594 co-relation queries the response was YES. [2024-10-11 14:37:38,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7000 conditions, 919 events. 431/919 cut-off events. For 19594/19594 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4936 event pairs, 79 based on Foata normal form. 2/921 useless extension candidates. Maximal degree in co-relation 6917. Up to 356 conditions per place. [2024-10-11 14:37:38,890 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 103 selfloop transitions, 69 changer transitions 15/188 dead transitions. [2024-10-11 14:37:38,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 188 transitions, 4275 flow [2024-10-11 14:37:38,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:37:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:37:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-10-11 14:37:38,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-10-11 14:37:38,891 INFO L175 Difference]: Start difference. First operand has 264 places, 159 transitions, 3514 flow. Second operand 9 states and 83 transitions. [2024-10-11 14:37:38,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 188 transitions, 4275 flow [2024-10-11 14:37:38,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 188 transitions, 3627 flow, removed 38 selfloop flow, removed 37 redundant places. [2024-10-11 14:37:38,948 INFO L231 Difference]: Finished difference. Result has 218 places, 158 transitions, 3135 flow [2024-10-11 14:37:38,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2919, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3135, PETRI_PLACES=218, PETRI_TRANSITIONS=158} [2024-10-11 14:37:38,949 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 194 predicate places. [2024-10-11 14:37:38,949 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 158 transitions, 3135 flow [2024-10-11 14:37:38,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:38,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:38,949 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:38,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:39,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,37 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:39,151 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:39,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:39,151 INFO L85 PathProgramCache]: Analyzing trace with hash 54095569, now seen corresponding path program 36 times [2024-10-11 14:37:39,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:39,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070795135] [2024-10-11 14:37:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:39,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:39,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:39,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070795135] [2024-10-11 14:37:39,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070795135] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:39,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824140677] [2024-10-11 14:37:39,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:37:39,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:39,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:39,249 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:39,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-11 14:37:39,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:37:39,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:39,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:37:39,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:39,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:39,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824140677] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:39,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:39,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-10-11 14:37:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349624453] [2024-10-11 14:37:39,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:39,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-11 14:37:39,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-11 14:37:39,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-10-11 14:37:39,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:39,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 158 transitions, 3135 flow. Second operand has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:39,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:39,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:39,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:40,863 INFO L124 PetriNetUnfolderBase]: 478/1022 cut-off events. [2024-10-11 14:37:40,864 INFO L125 PetriNetUnfolderBase]: For 17737/17737 co-relation queries the response was YES. [2024-10-11 14:37:40,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6807 conditions, 1022 events. 478/1022 cut-off events. For 17737/17737 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5713 event pairs, 49 based on Foata normal form. 8/1030 useless extension candidates. Maximal degree in co-relation 6737. Up to 320 conditions per place. [2024-10-11 14:37:40,871 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 111 selfloop transitions, 108 changer transitions 38/258 dead transitions. [2024-10-11 14:37:40,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 258 transitions, 4538 flow [2024-10-11 14:37:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-11 14:37:40,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-11 14:37:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 289 transitions. [2024-10-11 14:37:40,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29855371900826444 [2024-10-11 14:37:40,872 INFO L175 Difference]: Start difference. First operand has 218 places, 158 transitions, 3135 flow. Second operand 44 states and 289 transitions. [2024-10-11 14:37:40,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 258 transitions, 4538 flow [2024-10-11 14:37:40,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 258 transitions, 4248 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-10-11 14:37:40,910 INFO L231 Difference]: Finished difference. Result has 251 places, 166 transitions, 3279 flow [2024-10-11 14:37:40,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2885, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3279, PETRI_PLACES=251, PETRI_TRANSITIONS=166} [2024-10-11 14:37:40,911 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 227 predicate places. [2024-10-11 14:37:40,911 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 166 transitions, 3279 flow [2024-10-11 14:37:40,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:40,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:40,911 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:40,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:41,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-10-11 14:37:41,112 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:41,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash -774848283, now seen corresponding path program 37 times [2024-10-11 14:37:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:41,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064514490] [2024-10-11 14:37:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:41,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:41,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064514490] [2024-10-11 14:37:41,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064514490] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589207371] [2024-10-11 14:37:41,210 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:37:41,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:41,211 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:41,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-11 14:37:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:41,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:37:41,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:41,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:41,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589207371] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:41,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:41,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-10-11 14:37:41,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72381870] [2024-10-11 14:37:41,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:41,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 14:37:41,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 14:37:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2024-10-11 14:37:41,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:41,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 166 transitions, 3279 flow. Second operand has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:41,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:41,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:41,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:42,224 INFO L124 PetriNetUnfolderBase]: 475/1017 cut-off events. [2024-10-11 14:37:42,224 INFO L125 PetriNetUnfolderBase]: For 16439/16439 co-relation queries the response was YES. [2024-10-11 14:37:42,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6654 conditions, 1017 events. 475/1017 cut-off events. For 16439/16439 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5641 event pairs, 124 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 6581. Up to 371 conditions per place. [2024-10-11 14:37:42,229 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 90 selfloop transitions, 56 changer transitions 57/204 dead transitions. [2024-10-11 14:37:42,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 204 transitions, 3959 flow [2024-10-11 14:37:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 14:37:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 14:37:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 128 transitions. [2024-10-11 14:37:42,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-10-11 14:37:42,230 INFO L175 Difference]: Start difference. First operand has 251 places, 166 transitions, 3279 flow. Second operand 18 states and 128 transitions. [2024-10-11 14:37:42,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 204 transitions, 3959 flow [2024-10-11 14:37:42,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 204 transitions, 3500 flow, removed 103 selfloop flow, removed 24 redundant places. [2024-10-11 14:37:42,270 INFO L231 Difference]: Finished difference. Result has 226 places, 139 transitions, 2467 flow [2024-10-11 14:37:42,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2467, PETRI_PLACES=226, PETRI_TRANSITIONS=139} [2024-10-11 14:37:42,271 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 202 predicate places. [2024-10-11 14:37:42,271 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 139 transitions, 2467 flow [2024-10-11 14:37:42,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.333333333333333) internal successors, (117), 27 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:42,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:42,271 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:42,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-10-11 14:37:42,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,39 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:42,475 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:42,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1696254509, now seen corresponding path program 38 times [2024-10-11 14:37:42,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:42,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773905592] [2024-10-11 14:37:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:42,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:42,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:42,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773905592] [2024-10-11 14:37:42,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773905592] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:42,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800980863] [2024-10-11 14:37:42,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:37:42,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:42,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:42,649 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:42,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-11 14:37:42,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:42,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:42,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 14:37:42,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:42,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:42,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800980863] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:42,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:42,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 27 [2024-10-11 14:37:42,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086650966] [2024-10-11 14:37:42,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:42,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 14:37:42,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:42,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 14:37:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2024-10-11 14:37:42,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:42,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 139 transitions, 2467 flow. Second operand has 28 states, 28 states have (on average 4.5) internal successors, (126), 28 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:42,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:42,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:42,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:43,614 INFO L124 PetriNetUnfolderBase]: 368/800 cut-off events. [2024-10-11 14:37:43,614 INFO L125 PetriNetUnfolderBase]: For 12465/12465 co-relation queries the response was YES. [2024-10-11 14:37:43,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4795 conditions, 800 events. 368/800 cut-off events. For 12465/12465 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4155 event pairs, 124 based on Foata normal form. 5/805 useless extension candidates. Maximal degree in co-relation 4727. Up to 423 conditions per place. [2024-10-11 14:37:43,619 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 81 selfloop transitions, 65 changer transitions 27/174 dead transitions. [2024-10-11 14:37:43,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 174 transitions, 2964 flow [2024-10-11 14:37:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 14:37:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 14:37:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 152 transitions. [2024-10-11 14:37:43,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30039525691699603 [2024-10-11 14:37:43,620 INFO L175 Difference]: Start difference. First operand has 226 places, 139 transitions, 2467 flow. Second operand 23 states and 152 transitions. [2024-10-11 14:37:43,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 174 transitions, 2964 flow [2024-10-11 14:37:43,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 174 transitions, 2723 flow, removed 18 selfloop flow, removed 16 redundant places. [2024-10-11 14:37:43,648 INFO L231 Difference]: Finished difference. Result has 213 places, 132 transitions, 2214 flow [2024-10-11 14:37:43,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2214, PETRI_PLACES=213, PETRI_TRANSITIONS=132} [2024-10-11 14:37:43,648 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 189 predicate places. [2024-10-11 14:37:43,648 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 132 transitions, 2214 flow [2024-10-11 14:37:43,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.5) internal successors, (126), 28 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:43,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:43,649 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:43,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-10-11 14:37:43,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,40 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:43,850 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:43,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:43,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2111234697, now seen corresponding path program 39 times [2024-10-11 14:37:43,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:43,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008385856] [2024-10-11 14:37:43,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:43,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:43,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:43,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008385856] [2024-10-11 14:37:44,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008385856] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:44,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866502932] [2024-10-11 14:37:44,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:37:44,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:44,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:44,005 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:44,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-11 14:37:44,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:37:44,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:44,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:37:44,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:44,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866502932] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:44,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:44,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-10-11 14:37:44,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226761708] [2024-10-11 14:37:44,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:44,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 14:37:44,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 14:37:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2024-10-11 14:37:44,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:44,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 132 transitions, 2214 flow. Second operand has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 28 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:44,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:44,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:44,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:44,871 INFO L124 PetriNetUnfolderBase]: 344/736 cut-off events. [2024-10-11 14:37:44,872 INFO L125 PetriNetUnfolderBase]: For 8705/8705 co-relation queries the response was YES. [2024-10-11 14:37:44,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4312 conditions, 736 events. 344/736 cut-off events. For 8705/8705 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3719 event pairs, 14 based on Foata normal form. 4/740 useless extension candidates. Maximal degree in co-relation 4246. Up to 162 conditions per place. [2024-10-11 14:37:44,875 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 62 selfloop transitions, 42 changer transitions 58/163 dead transitions. [2024-10-11 14:37:44,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 163 transitions, 2693 flow [2024-10-11 14:37:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:37:44,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:37:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 115 transitions. [2024-10-11 14:37:44,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-10-11 14:37:44,876 INFO L175 Difference]: Start difference. First operand has 213 places, 132 transitions, 2214 flow. Second operand 16 states and 115 transitions. [2024-10-11 14:37:44,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 163 transitions, 2693 flow [2024-10-11 14:37:44,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 163 transitions, 2498 flow, removed 18 selfloop flow, removed 18 redundant places. [2024-10-11 14:37:44,898 INFO L231 Difference]: Finished difference. Result has 202 places, 87 transitions, 1343 flow [2024-10-11 14:37:44,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1343, PETRI_PLACES=202, PETRI_TRANSITIONS=87} [2024-10-11 14:37:44,899 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 178 predicate places. [2024-10-11 14:37:44,899 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 87 transitions, 1343 flow [2024-10-11 14:37:44,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 28 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:44,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:44,899 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:44,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-10-11 14:37:45,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-10-11 14:37:45,104 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:45,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1763137461, now seen corresponding path program 40 times [2024-10-11 14:37:45,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:45,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095316571] [2024-10-11 14:37:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:45,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:45,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095316571] [2024-10-11 14:37:45,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095316571] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:45,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005027268] [2024-10-11 14:37:45,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:37:45,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:45,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:45,208 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:45,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-11 14:37:45,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:37:45,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:45,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:37:45,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:45,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:45,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005027268] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:45,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:45,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-10-11 14:37:45,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782396387] [2024-10-11 14:37:45,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:45,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 14:37:45,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:45,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 14:37:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2024-10-11 14:37:45,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:45,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 87 transitions, 1343 flow. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:45,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:45,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:45,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:45,884 INFO L124 PetriNetUnfolderBase]: 192/423 cut-off events. [2024-10-11 14:37:45,884 INFO L125 PetriNetUnfolderBase]: For 5964/5964 co-relation queries the response was YES. [2024-10-11 14:37:45,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 423 events. 192/423 cut-off events. For 5964/5964 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1751 event pairs, 21 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 2521. Up to 95 conditions per place. [2024-10-11 14:37:45,887 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 48 selfloop transitions, 36 changer transitions 25/110 dead transitions. [2024-10-11 14:37:45,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 110 transitions, 1681 flow [2024-10-11 14:37:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:37:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:37:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 97 transitions. [2024-10-11 14:37:45,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31493506493506496 [2024-10-11 14:37:45,888 INFO L175 Difference]: Start difference. First operand has 202 places, 87 transitions, 1343 flow. Second operand 14 states and 97 transitions. [2024-10-11 14:37:45,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 110 transitions, 1681 flow [2024-10-11 14:37:45,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 110 transitions, 1339 flow, removed 15 selfloop flow, removed 40 redundant places. [2024-10-11 14:37:45,900 INFO L231 Difference]: Finished difference. Result has 154 places, 76 transitions, 953 flow [2024-10-11 14:37:45,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=953, PETRI_PLACES=154, PETRI_TRANSITIONS=76} [2024-10-11 14:37:45,900 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 130 predicate places. [2024-10-11 14:37:45,900 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 76 transitions, 953 flow [2024-10-11 14:37:45,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:45,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:45,900 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:45,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-10-11 14:37:46,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-10-11 14:37:46,101 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:46,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:46,101 INFO L85 PathProgramCache]: Analyzing trace with hash 792924393, now seen corresponding path program 41 times [2024-10-11 14:37:46,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:46,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177863311] [2024-10-11 14:37:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:46,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:46,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:46,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177863311] [2024-10-11 14:37:46,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177863311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:46,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101045915] [2024-10-11 14:37:46,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:37:46,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:46,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:46,146 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:46,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-11 14:37:46,190 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 14:37:46,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:46,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:37:46,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:46,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:46,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101045915] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:46,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:46,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 14:37:46,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273514918] [2024-10-11 14:37:46,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:46,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:37:46,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:46,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:37:46,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:37:46,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:37:46,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 76 transitions, 953 flow. Second operand has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:46,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:46,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:37:46,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:46,463 INFO L124 PetriNetUnfolderBase]: 126/315 cut-off events. [2024-10-11 14:37:46,464 INFO L125 PetriNetUnfolderBase]: For 3794/3794 co-relation queries the response was YES. [2024-10-11 14:37:46,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 315 events. 126/315 cut-off events. For 3794/3794 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1294 event pairs, 31 based on Foata normal form. 4/317 useless extension candidates. Maximal degree in co-relation 1578. Up to 121 conditions per place. [2024-10-11 14:37:46,466 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 52 selfloop transitions, 16 changer transitions 11/95 dead transitions. [2024-10-11 14:37:46,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 95 transitions, 1213 flow [2024-10-11 14:37:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:37:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:37:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-10-11 14:37:46,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-10-11 14:37:46,468 INFO L175 Difference]: Start difference. First operand has 154 places, 76 transitions, 953 flow. Second operand 10 states and 93 transitions. [2024-10-11 14:37:46,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 95 transitions, 1213 flow [2024-10-11 14:37:46,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 95 transitions, 1042 flow, removed 9 selfloop flow, removed 19 redundant places. [2024-10-11 14:37:46,476 INFO L231 Difference]: Finished difference. Result has 129 places, 72 transitions, 789 flow [2024-10-11 14:37:46,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=789, PETRI_PLACES=129, PETRI_TRANSITIONS=72} [2024-10-11 14:37:46,477 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 105 predicate places. [2024-10-11 14:37:46,477 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 72 transitions, 789 flow [2024-10-11 14:37:46,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:46,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:46,478 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:46,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:46,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,43 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:46,683 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:46,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:46,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1108785288, now seen corresponding path program 42 times [2024-10-11 14:37:46,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:46,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767148473] [2024-10-11 14:37:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:46,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:46,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:46,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767148473] [2024-10-11 14:37:46,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767148473] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:46,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831781857] [2024-10-11 14:37:46,737 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:37:46,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:46,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:46,738 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:46,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-10-11 14:37:46,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:37:46,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:46,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:37:46,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:46,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:46,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831781857] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:46,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:46,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-10-11 14:37:46,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844535114] [2024-10-11 14:37:46,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:46,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:37:46,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:46,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:37:46,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:37:46,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-11 14:37:46,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 72 transitions, 789 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:46,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:46,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-11 14:37:46,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:47,046 INFO L124 PetriNetUnfolderBase]: 104/262 cut-off events. [2024-10-11 14:37:47,046 INFO L125 PetriNetUnfolderBase]: For 2304/2304 co-relation queries the response was YES. [2024-10-11 14:37:47,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 262 events. 104/262 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1004 event pairs, 40 based on Foata normal form. 5/261 useless extension candidates. Maximal degree in co-relation 1218. Up to 132 conditions per place. [2024-10-11 14:37:47,048 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 46 selfloop transitions, 24 changer transitions 2/87 dead transitions. [2024-10-11 14:37:47,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 87 transitions, 966 flow [2024-10-11 14:37:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:37:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:37:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-10-11 14:37:47,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-10-11 14:37:47,050 INFO L175 Difference]: Start difference. First operand has 129 places, 72 transitions, 789 flow. Second operand 10 states and 96 transitions. [2024-10-11 14:37:47,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 87 transitions, 966 flow [2024-10-11 14:37:47,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 87 transitions, 935 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-11 14:37:47,056 INFO L231 Difference]: Finished difference. Result has 126 places, 70 transitions, 784 flow [2024-10-11 14:37:47,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=784, PETRI_PLACES=126, PETRI_TRANSITIONS=70} [2024-10-11 14:37:47,057 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 102 predicate places. [2024-10-11 14:37:47,057 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 70 transitions, 784 flow [2024-10-11 14:37:47,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:47,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:47,057 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:47,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:47,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,44 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:47,258 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:47,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash 8862922, now seen corresponding path program 43 times [2024-10-11 14:37:47,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:47,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659286939] [2024-10-11 14:37:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:47,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:47,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:47,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659286939] [2024-10-11 14:37:47,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659286939] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:47,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823700140] [2024-10-11 14:37:47,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:37:47,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:47,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:47,411 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:47,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-10-11 14:37:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:47,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 14:37:47,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:47,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:47,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823700140] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:47,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:47,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2024-10-11 14:37:47,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420008407] [2024-10-11 14:37:47,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:47,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 14:37:47,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 14:37:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 14:37:47,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:47,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 70 transitions, 784 flow. Second operand has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 33 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:47,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:47,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:47,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:48,389 INFO L124 PetriNetUnfolderBase]: 157/352 cut-off events. [2024-10-11 14:37:48,390 INFO L125 PetriNetUnfolderBase]: For 2790/2790 co-relation queries the response was YES. [2024-10-11 14:37:48,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 352 events. 157/352 cut-off events. For 2790/2790 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1375 event pairs, 1 based on Foata normal form. 1/353 useless extension candidates. Maximal degree in co-relation 1634. Up to 79 conditions per place. [2024-10-11 14:37:48,391 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 50 selfloop transitions, 35 changer transitions 33/119 dead transitions. [2024-10-11 14:37:48,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 119 transitions, 1251 flow [2024-10-11 14:37:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 14:37:48,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 14:37:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 142 transitions. [2024-10-11 14:37:48,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32272727272727275 [2024-10-11 14:37:48,393 INFO L175 Difference]: Start difference. First operand has 126 places, 70 transitions, 784 flow. Second operand 20 states and 142 transitions. [2024-10-11 14:37:48,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 119 transitions, 1251 flow [2024-10-11 14:37:48,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 119 transitions, 1199 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-11 14:37:48,399 INFO L231 Difference]: Finished difference. Result has 138 places, 57 transitions, 675 flow [2024-10-11 14:37:48,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=675, PETRI_PLACES=138, PETRI_TRANSITIONS=57} [2024-10-11 14:37:48,399 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 114 predicate places. [2024-10-11 14:37:48,399 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 57 transitions, 675 flow [2024-10-11 14:37:48,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 33 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:48,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:48,400 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:48,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:48,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,45 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:48,604 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:48,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:48,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2011438112, now seen corresponding path program 44 times [2024-10-11 14:37:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:48,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162289093] [2024-10-11 14:37:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:48,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:48,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162289093] [2024-10-11 14:37:48,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162289093] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511579905] [2024-10-11 14:37:48,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:37:48,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:48,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:48,734 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:48,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-10-11 14:37:48,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:48,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:48,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 14:37:48,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:48,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:49,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511579905] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:49,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:49,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2024-10-11 14:37:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670048956] [2024-10-11 14:37:49,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:49,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 14:37:49,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:49,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 14:37:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=876, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 14:37:49,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:49,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 57 transitions, 675 flow. Second operand has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 33 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:49,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:49,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:49,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:49,474 INFO L124 PetriNetUnfolderBase]: 114/269 cut-off events. [2024-10-11 14:37:49,474 INFO L125 PetriNetUnfolderBase]: For 1930/1930 co-relation queries the response was YES. [2024-10-11 14:37:49,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 269 events. 114/269 cut-off events. For 1930/1930 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 980 event pairs, 1 based on Foata normal form. 2/271 useless extension candidates. Maximal degree in co-relation 1287. Up to 61 conditions per place. [2024-10-11 14:37:49,475 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 39 selfloop transitions, 26 changer transitions 20/86 dead transitions. [2024-10-11 14:37:49,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 86 transitions, 926 flow [2024-10-11 14:37:49,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:37:49,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:37:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 108 transitions. [2024-10-11 14:37:49,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-10-11 14:37:49,476 INFO L175 Difference]: Start difference. First operand has 138 places, 57 transitions, 675 flow. Second operand 16 states and 108 transitions. [2024-10-11 14:37:49,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 86 transitions, 926 flow [2024-10-11 14:37:49,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 86 transitions, 735 flow, removed 13 selfloop flow, removed 25 redundant places. [2024-10-11 14:37:49,481 INFO L231 Difference]: Finished difference. Result has 111 places, 46 transitions, 429 flow [2024-10-11 14:37:49,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=429, PETRI_PLACES=111, PETRI_TRANSITIONS=46} [2024-10-11 14:37:49,482 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2024-10-11 14:37:49,482 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 46 transitions, 429 flow [2024-10-11 14:37:49,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 33 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:49,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:49,482 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:49,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-10-11 14:37:49,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2024-10-11 14:37:49,683 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:49,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1476208310, now seen corresponding path program 45 times [2024-10-11 14:37:49,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:49,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13812139] [2024-10-11 14:37:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:49,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:49,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:49,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13812139] [2024-10-11 14:37:49,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13812139] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:49,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995872979] [2024-10-11 14:37:49,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:37:49,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:49,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:49,805 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:49,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-10-11 14:37:49,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:37:49,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:49,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 14:37:49,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:37:49,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:37:49,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995872979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:49,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:37:49,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 19 [2024-10-11 14:37:49,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520400303] [2024-10-11 14:37:49,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:49,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 14:37:49,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 14:37:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-10-11 14:37:49,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-11 14:37:49,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 46 transitions, 429 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:49,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:49,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-11 14:37:49,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:50,057 INFO L124 PetriNetUnfolderBase]: 77/179 cut-off events. [2024-10-11 14:37:50,057 INFO L125 PetriNetUnfolderBase]: For 734/734 co-relation queries the response was YES. [2024-10-11 14:37:50,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 179 events. 77/179 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 507 event pairs, 5 based on Foata normal form. 2/181 useless extension candidates. Maximal degree in co-relation 832. Up to 50 conditions per place. [2024-10-11 14:37:50,058 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2024-10-11 14:37:50,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 53 transitions, 548 flow [2024-10-11 14:37:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:37:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:37:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 58 transitions. [2024-10-11 14:37:50,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29292929292929293 [2024-10-11 14:37:50,059 INFO L175 Difference]: Start difference. First operand has 111 places, 46 transitions, 429 flow. Second operand 9 states and 58 transitions. [2024-10-11 14:37:50,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 53 transitions, 548 flow [2024-10-11 14:37:50,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 53 transitions, 461 flow, removed 0 selfloop flow, removed 18 redundant places. [2024-10-11 14:37:50,061 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2024-10-11 14:37:50,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2024-10-11 14:37:50,061 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 70 predicate places. [2024-10-11 14:37:50,061 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2024-10-11 14:37:50,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:50,063 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-10-11 14:37:50,064 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-10-11 14:37:50,064 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-11 14:37:50,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:50,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,47 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:50,269 INFO L407 BasicCegarLoop]: Path program histogram: [45, 20, 5, 5] [2024-10-11 14:37:50,272 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:37:50,272 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:37:50,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:37:50 BasicIcfg [2024-10-11 14:37:50,276 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:37:50,277 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:37:50,277 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:37:50,277 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:37:50,277 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:40" (3/4) ... [2024-10-11 14:37:50,278 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:37:50,281 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-11 14:37:50,281 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-11 14:37:50,284 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2024-10-11 14:37:50,285 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-11 14:37:50,285 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-11 14:37:50,285 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-11 14:37:50,368 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:37:50,369 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:37:50,369 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:37:50,369 INFO L158 Benchmark]: Toolchain (without parser) took 70791.90ms. Allocated memory was 159.4MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 88.1MB in the beginning and 613.4MB in the end (delta: -525.4MB). Peak memory consumption was 667.6MB. Max. memory is 16.1GB. [2024-10-11 14:37:50,369 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 159.4MB. Free memory was 109.1MB in the beginning and 109.0MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:37:50,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.05ms. Allocated memory was 159.4MB in the beginning and 211.8MB in the end (delta: 52.4MB). Free memory was 87.9MB in the beginning and 176.4MB in the end (delta: -88.5MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2024-10-11 14:37:50,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.84ms. Allocated memory is still 211.8MB. Free memory was 176.4MB in the beginning and 174.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:37:50,370 INFO L158 Benchmark]: Boogie Preprocessor took 35.16ms. Allocated memory is still 211.8MB. Free memory was 174.3MB in the beginning and 172.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:37:50,370 INFO L158 Benchmark]: RCFGBuilder took 350.76ms. Allocated memory is still 211.8MB. Free memory was 172.2MB in the beginning and 152.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-11 14:37:50,370 INFO L158 Benchmark]: TraceAbstraction took 70021.82ms. Allocated memory was 211.8MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 151.3MB in the beginning and 617.6MB in the end (delta: -466.4MB). Peak memory consumption was 672.4MB. Max. memory is 16.1GB. [2024-10-11 14:37:50,370 INFO L158 Benchmark]: Witness Printer took 92.02ms. Allocated memory is still 1.4GB. Free memory was 617.6MB in the beginning and 613.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 14:37:50,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 159.4MB. Free memory was 109.1MB in the beginning and 109.0MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.05ms. Allocated memory was 159.4MB in the beginning and 211.8MB in the end (delta: 52.4MB). Free memory was 87.9MB in the beginning and 176.4MB in the end (delta: -88.5MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.84ms. Allocated memory is still 211.8MB. Free memory was 176.4MB in the beginning and 174.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.16ms. Allocated memory is still 211.8MB. Free memory was 174.3MB in the beginning and 172.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 350.76ms. Allocated memory is still 211.8MB. Free memory was 172.2MB in the beginning and 152.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 70021.82ms. Allocated memory was 211.8MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 151.3MB in the beginning and 617.6MB in the end (delta: -466.4MB). Peak memory consumption was 672.4MB. Max. memory is 16.1GB. * Witness Printer took 92.02ms. Allocated memory is still 1.4GB. Free memory was 617.6MB in the beginning and 613.4MB 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: 79]: 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, 33 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: 69.9s, OverallIterations: 75, TraceHistogramMax: 3, PathProgramHistogramMax: 45, EmptinessCheckTime: 0.0s, AutomataDifference: 40.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4505 SdHoareTripleChecker+Valid, 13.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4452 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 11.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 993 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32487 IncrementalHoareTripleChecker+Invalid, 33480 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 993 mSolverCounterUnsat, 8 mSDtfsCounter, 32487 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2985 GetRequests, 1255 SyntacticMatches, 10 SemanticMatches, 1720 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14619 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14594occurred in iteration=50, InterpolantAutomatonStates: 1095, 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, 0.7s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 2330 NumberOfCodeBlocks, 2329 NumberOfCodeBlocksAsserted, 171 NumberOfCheckSat, 2963 ConstructedInterpolants, 0 QuantifiedInterpolants, 17502 SizeOfPredicates, 155 NumberOfNonLiveVariables, 4579 ConjunctsInSsa, 642 ConjunctsInUnsatCore, 161 InterpolantComputations, 36 PerfectInterpolantSequences, 106/526 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! [2024-10-11 14:37:50,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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