./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-longest-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:05:48,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:05:48,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:05:48,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:05:48,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:05:48,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:05:48,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:05:48,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:05:48,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:05:48,228 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:05:48,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:05:48,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:05:48,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:05:48,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:05:48,232 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:05:48,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:05:48,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:05:48,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:05:48,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:05:48,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:05:48,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:05:48,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:05:48,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:05:48,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:05:48,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:05:48,239 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:05:48,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:05:48,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:05:48,240 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:05:48,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:05:48,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:05:48,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:05:48,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:05:48,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:05:48,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:05:48,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:05:48,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:05:48,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:05:48,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:05:48,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:05:48,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:05:48,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:05:48,250 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2024-11-16 19:05:48,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:05:48,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:05:48,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:05:48,540 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:05:48,540 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:05:48,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-16 19:05:50,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:05:50,261 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:05:50,261 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-16 19:05:50,275 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310b2cbd3/c52fc17f8e214a3c84a75853ec927095/FLAGb17cc4dd9 [2024-11-16 19:05:50,289 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310b2cbd3/c52fc17f8e214a3c84a75853ec927095 [2024-11-16 19:05:50,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:05:50,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:05:50,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:05:50,299 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:05:50,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:05:50,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ada575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50, skipping insertion in model container [2024-11-16 19:05:50,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,352 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:05:50,722 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2024-11-16 19:05:50,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:05:50,735 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:05:50,775 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2024-11-16 19:05:50,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:05:50,815 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:05:50,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50 WrapperNode [2024-11-16 19:05:50,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:05:50,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:05:50,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:05:50,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:05:50,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,836 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,853 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-16 19:05:50,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:05:50,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:05:50,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:05:50,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:05:50,862 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,877 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]. [2024-11-16 19:05:50,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,883 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:05:50,889 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:05:50,890 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:05:50,890 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:05:50,890 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (1/1) ... [2024-11-16 19:05:50,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:05:50,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:05:50,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:05:50,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:05:50,996 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-16 19:05:50,997 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-16 19:05:50,998 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-16 19:05:50,998 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-16 19:05:50,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:05:50,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:05:50,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:05:51,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:05:51,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:05:51,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:05:51,002 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:05:51,224 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:05:51,227 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:05:51,385 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:05:51,385 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:05:51,486 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:05:51,486 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:05:51,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:05:51 BoogieIcfgContainer [2024-11-16 19:05:51,487 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:05:51,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:05:51,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:05:51,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:05:51,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:05:50" (1/3) ... [2024-11-16 19:05:51,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c83c14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:05:51, skipping insertion in model container [2024-11-16 19:05:51,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:05:50" (2/3) ... [2024-11-16 19:05:51,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c83c14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:05:51, skipping insertion in model container [2024-11-16 19:05:51,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:05:51" (3/3) ... [2024-11-16 19:05:51,497 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2024-11-16 19:05:51,514 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:05:51,515 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:05:51,515 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:05:51,557 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:05:51,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 68 flow [2024-11-16 19:05:51,616 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-11-16 19:05:51,616 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:05:51,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 5/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-11-16 19:05:51,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 30 transitions, 68 flow [2024-11-16 19:05:51,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 28 transitions, 62 flow [2024-11-16 19:05:51,637 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:05:51,643 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;@6ddaa9c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:05:51,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-16 19:05:51,652 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:05:51,653 INFO L124 PetriNetUnfolderBase]: 5/27 cut-off events. [2024-11-16 19:05:51,653 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:05:51,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:51,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:51,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:05:51,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1518046071, now seen corresponding path program 1 times [2024-11-16 19:05:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:51,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308151925] [2024-11-16 19:05:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:51,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:52,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:52,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308151925] [2024-11-16 19:05:52,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308151925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:52,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:52,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:05:52,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368895142] [2024-11-16 19:05:52,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:52,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:05:52,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:05:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:05:52,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:05:52,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:52,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:52,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:05:52,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:52,473 INFO L124 PetriNetUnfolderBase]: 321/609 cut-off events. [2024-11-16 19:05:52,474 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:05:52,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1121 conditions, 609 events. 321/609 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3137 event pairs, 62 based on Foata normal form. 112/664 useless extension candidates. Maximal degree in co-relation 1111. Up to 221 conditions per place. [2024-11-16 19:05:52,481 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 25 selfloop transitions, 4 changer transitions 22/58 dead transitions. [2024-11-16 19:05:52,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 58 transitions, 224 flow [2024-11-16 19:05:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:05:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:05:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-16 19:05:52,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-11-16 19:05:52,500 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 62 flow. Second operand 6 states and 118 transitions. [2024-11-16 19:05:52,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 58 transitions, 224 flow [2024-11-16 19:05:52,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:05:52,510 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 79 flow [2024-11-16 19:05:52,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2024-11-16 19:05:52,517 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-11-16 19:05:52,518 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 79 flow [2024-11-16 19:05:52,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:52,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:52,519 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:52,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:05:52,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:05:52,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2109871830, now seen corresponding path program 1 times [2024-11-16 19:05:52,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:52,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850364713] [2024-11-16 19:05:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:52,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:52,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:52,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850364713] [2024-11-16 19:05:52,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850364713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:52,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:52,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:05:52,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844200677] [2024-11-16 19:05:52,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:52,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:05:52,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:52,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:05:52,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:05:52,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:05:52,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:52,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:52,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:05:52,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:53,149 INFO L124 PetriNetUnfolderBase]: 382/791 cut-off events. [2024-11-16 19:05:53,150 INFO L125 PetriNetUnfolderBase]: For 291/297 co-relation queries the response was YES. [2024-11-16 19:05:53,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 791 events. 382/791 cut-off events. For 291/297 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4305 event pairs, 65 based on Foata normal form. 33/757 useless extension candidates. Maximal degree in co-relation 1674. Up to 246 conditions per place. [2024-11-16 19:05:53,164 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 46 selfloop transitions, 9 changer transitions 20/82 dead transitions. [2024-11-16 19:05:53,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 82 transitions, 387 flow [2024-11-16 19:05:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:05:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:05:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-11-16 19:05:53,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-16 19:05:53,169 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 79 flow. Second operand 9 states and 153 transitions. [2024-11-16 19:05:53,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 82 transitions, 387 flow [2024-11-16 19:05:53,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 82 transitions, 371 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-16 19:05:53,177 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 164 flow [2024-11-16 19:05:53,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=164, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-11-16 19:05:53,179 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-11-16 19:05:53,179 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 164 flow [2024-11-16 19:05:53,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:53,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:53,180 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:53,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:05:53,181 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:05:53,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash -280399476, now seen corresponding path program 2 times [2024-11-16 19:05:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:53,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522140468] [2024-11-16 19:05:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:53,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:53,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:53,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522140468] [2024-11-16 19:05:53,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522140468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:53,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:53,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:05:53,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997277265] [2024-11-16 19:05:53,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:53,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:05:53,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:53,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:05:53,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:05:53,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:05:53,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:53,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:53,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:05:53,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:53,641 INFO L124 PetriNetUnfolderBase]: 328/701 cut-off events. [2024-11-16 19:05:53,642 INFO L125 PetriNetUnfolderBase]: For 1022/1040 co-relation queries the response was YES. [2024-11-16 19:05:53,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 701 events. 328/701 cut-off events. For 1022/1040 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3870 event pairs, 65 based on Foata normal form. 63/700 useless extension candidates. Maximal degree in co-relation 1809. Up to 234 conditions per place. [2024-11-16 19:05:53,646 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 38 selfloop transitions, 9 changer transitions 28/82 dead transitions. [2024-11-16 19:05:53,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 82 transitions, 504 flow [2024-11-16 19:05:53,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:05:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:05:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-11-16 19:05:53,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-16 19:05:53,652 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 164 flow. Second operand 8 states and 135 transitions. [2024-11-16 19:05:53,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 82 transitions, 504 flow [2024-11-16 19:05:53,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 82 transitions, 496 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-16 19:05:53,657 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 218 flow [2024-11-16 19:05:53,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2024-11-16 19:05:53,658 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-11-16 19:05:53,659 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 218 flow [2024-11-16 19:05:53,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:53,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:53,659 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:53,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:05:53,660 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:05:53,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:53,660 INFO L85 PathProgramCache]: Analyzing trace with hash -525708359, now seen corresponding path program 1 times [2024-11-16 19:05:53,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:53,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984756502] [2024-11-16 19:05:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:53,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:53,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:53,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984756502] [2024-11-16 19:05:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984756502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:53,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:53,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:05:53,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698927424] [2024-11-16 19:05:53,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:53,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:05:53,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:05:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:05:53,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:05:53,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:53,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:53,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:05:53,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:54,024 INFO L124 PetriNetUnfolderBase]: 355/779 cut-off events. [2024-11-16 19:05:54,024 INFO L125 PetriNetUnfolderBase]: For 1859/1889 co-relation queries the response was YES. [2024-11-16 19:05:54,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2185 conditions, 779 events. 355/779 cut-off events. For 1859/1889 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4488 event pairs, 80 based on Foata normal form. 27/724 useless extension candidates. Maximal degree in co-relation 2159. Up to 258 conditions per place. [2024-11-16 19:05:54,030 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 43 selfloop transitions, 16 changer transitions 21/87 dead transitions. [2024-11-16 19:05:54,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 87 transitions, 605 flow [2024-11-16 19:05:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:05:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:05:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-11-16 19:05:54,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5518518518518518 [2024-11-16 19:05:54,033 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 218 flow. Second operand 9 states and 149 transitions. [2024-11-16 19:05:54,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 87 transitions, 605 flow [2024-11-16 19:05:54,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 535 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-16 19:05:54,042 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 305 flow [2024-11-16 19:05:54,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=305, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-16 19:05:54,043 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-11-16 19:05:54,044 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 305 flow [2024-11-16 19:05:54,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:54,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:54,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:54,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:05:54,045 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:05:54,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2107619097, now seen corresponding path program 2 times [2024-11-16 19:05:54,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:54,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665415277] [2024-11-16 19:05:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:54,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:54,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:54,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665415277] [2024-11-16 19:05:54,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665415277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:54,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:54,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:05:54,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251975774] [2024-11-16 19:05:54,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:54,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:05:54,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:54,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:05:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:05:54,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:05:54,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 305 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:54,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:54,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:05:54,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:54,480 INFO L124 PetriNetUnfolderBase]: 526/1157 cut-off events. [2024-11-16 19:05:54,481 INFO L125 PetriNetUnfolderBase]: For 3389/3428 co-relation queries the response was YES. [2024-11-16 19:05:54,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 1157 events. 526/1157 cut-off events. For 3389/3428 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7061 event pairs, 53 based on Foata normal form. 47/1098 useless extension candidates. Maximal degree in co-relation 3346. Up to 256 conditions per place. [2024-11-16 19:05:54,488 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 57 selfloop transitions, 22 changer transitions 23/109 dead transitions. [2024-11-16 19:05:54,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 801 flow [2024-11-16 19:05:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:05:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:05:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-11-16 19:05:54,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-11-16 19:05:54,490 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 305 flow. Second operand 11 states and 185 transitions. [2024-11-16 19:05:54,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 801 flow [2024-11-16 19:05:54,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 109 transitions, 741 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-11-16 19:05:54,498 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 415 flow [2024-11-16 19:05:54,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=415, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2024-11-16 19:05:54,499 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-11-16 19:05:54,499 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 415 flow [2024-11-16 19:05:54,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:54,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:54,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:54,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:05:54,500 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:05:54,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:54,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1506852439, now seen corresponding path program 3 times [2024-11-16 19:05:54,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:54,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547137807] [2024-11-16 19:05:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:54,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:54,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:54,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547137807] [2024-11-16 19:05:54,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547137807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:05:54,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:05:54,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:05:54,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300089616] [2024-11-16 19:05:54,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:05:54,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:05:54,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:54,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:05:54,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:05:54,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:05:54,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:54,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:54,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:05:54,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:54,892 INFO L124 PetriNetUnfolderBase]: 463/1031 cut-off events. [2024-11-16 19:05:54,893 INFO L125 PetriNetUnfolderBase]: For 5304/5349 co-relation queries the response was YES. [2024-11-16 19:05:54,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3451 conditions, 1031 events. 463/1031 cut-off events. For 5304/5349 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6215 event pairs, 71 based on Foata normal form. 77/1008 useless extension candidates. Maximal degree in co-relation 3418. Up to 226 conditions per place. [2024-11-16 19:05:54,901 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 44 selfloop transitions, 22 changer transitions 31/104 dead transitions. [2024-11-16 19:05:54,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 104 transitions, 939 flow [2024-11-16 19:05:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:05:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:05:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-11-16 19:05:54,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-16 19:05:54,903 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 415 flow. Second operand 10 states and 165 transitions. [2024-11-16 19:05:54,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 104 transitions, 939 flow [2024-11-16 19:05:54,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 104 transitions, 873 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-16 19:05:54,916 INFO L231 Difference]: Finished difference. Result has 74 places, 52 transitions, 471 flow [2024-11-16 19:05:54,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=74, PETRI_TRANSITIONS=52} [2024-11-16 19:05:54,918 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-11-16 19:05:54,918 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 52 transitions, 471 flow [2024-11-16 19:05:54,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:54,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:54,919 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:54,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:05:54,919 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:05:54,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:54,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1803020963, now seen corresponding path program 1 times [2024-11-16 19:05:54,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:54,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778570740] [2024-11-16 19:05:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:55,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:55,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778570740] [2024-11-16 19:05:55,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778570740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:05:55,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658543097] [2024-11-16 19:05:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:55,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:55,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:05:55,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:05:55,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:05:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:55,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 19:05:55,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:05:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:55,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:05:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:55,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658543097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:05:55,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:05:55,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-16 19:05:55,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508269303] [2024-11-16 19:05:55,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:05:55,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:05:55,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:55,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:05:55,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:05:55,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:05:55,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 52 transitions, 471 flow. Second operand has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:55,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:55,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:05:55,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:55,988 INFO L124 PetriNetUnfolderBase]: 661/1436 cut-off events. [2024-11-16 19:05:55,988 INFO L125 PetriNetUnfolderBase]: For 9969/10059 co-relation queries the response was YES. [2024-11-16 19:05:55,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5176 conditions, 1436 events. 661/1436 cut-off events. For 9969/10059 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8404 event pairs, 59 based on Foata normal form. 77/1386 useless extension candidates. Maximal degree in co-relation 5140. Up to 201 conditions per place. [2024-11-16 19:05:56,000 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 66 selfloop transitions, 37 changer transitions 56/166 dead transitions. [2024-11-16 19:05:56,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 166 transitions, 1563 flow [2024-11-16 19:05:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 19:05:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-16 19:05:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 312 transitions. [2024-11-16 19:05:56,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2024-11-16 19:05:56,003 INFO L175 Difference]: Start difference. First operand has 74 places, 52 transitions, 471 flow. Second operand 19 states and 312 transitions. [2024-11-16 19:05:56,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 166 transitions, 1563 flow [2024-11-16 19:05:56,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 166 transitions, 1439 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-11-16 19:05:56,022 INFO L231 Difference]: Finished difference. Result has 91 places, 68 transitions, 801 flow [2024-11-16 19:05:56,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=801, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2024-11-16 19:05:56,023 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-11-16 19:05:56,024 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 801 flow [2024-11-16 19:05:56,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:56,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:56,024 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:56,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 19:05:56,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:56,226 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:05:56,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:56,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1672873175, now seen corresponding path program 1 times [2024-11-16 19:05:56,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:56,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145585275] [2024-11-16 19:05:56,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:56,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:05:56,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:56,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145585275] [2024-11-16 19:05:56,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145585275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:05:56,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949587697] [2024-11-16 19:05:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:56,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:56,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:05:56,494 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:05:56,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:05:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:56,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 19:05:56,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:05:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:05:56,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:05:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:05:56,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949587697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:05:56,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:05:56,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-16 19:05:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16750781] [2024-11-16 19:05:56,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:05:56,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:05:56,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:05:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:05:56,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:05:56,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 801 flow. Second operand has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:56,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:56,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:05:56,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:57,691 INFO L124 PetriNetUnfolderBase]: 859/1970 cut-off events. [2024-11-16 19:05:57,691 INFO L125 PetriNetUnfolderBase]: For 20866/21004 co-relation queries the response was YES. [2024-11-16 19:05:57,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7847 conditions, 1970 events. 859/1970 cut-off events. For 20866/21004 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 11687 event pairs, 215 based on Foata normal form. 115/1863 useless extension candidates. Maximal degree in co-relation 7804. Up to 756 conditions per place. [2024-11-16 19:05:57,706 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 95 selfloop transitions, 27 changer transitions 89/218 dead transitions. [2024-11-16 19:05:57,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 218 transitions, 2489 flow [2024-11-16 19:05:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 19:05:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-16 19:05:57,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 401 transitions. [2024-11-16 19:05:57,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346666666666666 [2024-11-16 19:05:57,709 INFO L175 Difference]: Start difference. First operand has 91 places, 68 transitions, 801 flow. Second operand 25 states and 401 transitions. [2024-11-16 19:05:57,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 218 transitions, 2489 flow [2024-11-16 19:05:57,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 218 transitions, 1980 flow, removed 241 selfloop flow, removed 10 redundant places. [2024-11-16 19:05:57,737 INFO L231 Difference]: Finished difference. Result has 119 places, 82 transitions, 895 flow [2024-11-16 19:05:57,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=895, PETRI_PLACES=119, PETRI_TRANSITIONS=82} [2024-11-16 19:05:57,738 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-11-16 19:05:57,738 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 82 transitions, 895 flow [2024-11-16 19:05:57,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:57,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:57,739 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:57,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 19:05:57,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-16 19:05:57,943 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:05:57,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:57,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1700188409, now seen corresponding path program 2 times [2024-11-16 19:05:57,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:57,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454837701] [2024-11-16 19:05:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:57,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:05:58,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:58,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454837701] [2024-11-16 19:05:58,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454837701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:05:58,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843339627] [2024-11-16 19:05:58,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:05:58,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:58,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:05:58,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:05:58,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:05:58,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:05:58,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:05:58,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 19:05:58,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:05:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:05:58,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:05:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:05:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843339627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:05:58,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:05:58,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-16 19:05:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840584885] [2024-11-16 19:05:58,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:05:58,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:05:58,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:05:58,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:05:58,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:05:58,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:05:58,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 82 transitions, 895 flow. Second operand has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:58,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:05:58,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:05:58,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:05:59,576 INFO L124 PetriNetUnfolderBase]: 1453/3314 cut-off events. [2024-11-16 19:05:59,576 INFO L125 PetriNetUnfolderBase]: For 67654/68131 co-relation queries the response was YES. [2024-11-16 19:05:59,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15186 conditions, 3314 events. 1453/3314 cut-off events. For 67654/68131 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 23243 event pairs, 136 based on Foata normal form. 141/3149 useless extension candidates. Maximal degree in co-relation 15130. Up to 495 conditions per place. [2024-11-16 19:05:59,607 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 127 selfloop transitions, 82 changer transitions 91/307 dead transitions. [2024-11-16 19:05:59,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 307 transitions, 3953 flow [2024-11-16 19:05:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-16 19:05:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-16 19:05:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 521 transitions. [2024-11-16 19:05:59,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5427083333333333 [2024-11-16 19:05:59,611 INFO L175 Difference]: Start difference. First operand has 119 places, 82 transitions, 895 flow. Second operand 32 states and 521 transitions. [2024-11-16 19:05:59,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 307 transitions, 3953 flow [2024-11-16 19:05:59,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 307 transitions, 3356 flow, removed 289 selfloop flow, removed 13 redundant places. [2024-11-16 19:05:59,683 INFO L231 Difference]: Finished difference. Result has 151 places, 125 transitions, 1704 flow [2024-11-16 19:05:59,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1704, PETRI_PLACES=151, PETRI_TRANSITIONS=125} [2024-11-16 19:05:59,685 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-11-16 19:05:59,685 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 125 transitions, 1704 flow [2024-11-16 19:05:59,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:05:59,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:05:59,686 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:05:59,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:05:59,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:59,888 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:05:59,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:05:59,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1866603981, now seen corresponding path program 3 times [2024-11-16 19:05:59,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:05:59,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072579423] [2024-11-16 19:05:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:05:59,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:05:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:06:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:00,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:06:00,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072579423] [2024-11-16 19:06:00,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072579423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:06:00,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372116689] [2024-11-16 19:06:00,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:06:00,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:06:00,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:06:00,086 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:06:00,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:06:00,143 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 19:06:00,144 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:06:00,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 19:06:00,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:06:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:00,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:06:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:00,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372116689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:06:00,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:06:00,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-16 19:06:00,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770956160] [2024-11-16 19:06:00,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:06:00,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 19:06:00,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:06:00,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 19:06:00,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:06:00,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:06:00,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 125 transitions, 1704 flow. Second operand has 18 states, 18 states have (on average 11.277777777777779) internal successors, (203), 18 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:00,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:06:00,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:06:00,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:06:01,933 INFO L124 PetriNetUnfolderBase]: 1840/4178 cut-off events. [2024-11-16 19:06:01,934 INFO L125 PetriNetUnfolderBase]: For 151585/151915 co-relation queries the response was YES. [2024-11-16 19:06:02,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22421 conditions, 4178 events. 1840/4178 cut-off events. For 151585/151915 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 30401 event pairs, 58 based on Foata normal form. 183/4000 useless extension candidates. Maximal degree in co-relation 22350. Up to 651 conditions per place. [2024-11-16 19:06:02,053 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 124 selfloop transitions, 123 changer transitions 115/369 dead transitions. [2024-11-16 19:06:02,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 369 transitions, 5931 flow [2024-11-16 19:06:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-16 19:06:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-16 19:06:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 587 transitions. [2024-11-16 19:06:02,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5435185185185185 [2024-11-16 19:06:02,056 INFO L175 Difference]: Start difference. First operand has 151 places, 125 transitions, 1704 flow. Second operand 36 states and 587 transitions. [2024-11-16 19:06:02,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 369 transitions, 5931 flow [2024-11-16 19:06:02,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 369 transitions, 5066 flow, removed 416 selfloop flow, removed 15 redundant places. [2024-11-16 19:06:02,267 INFO L231 Difference]: Finished difference. Result has 185 places, 160 transitions, 2549 flow [2024-11-16 19:06:02,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2549, PETRI_PLACES=185, PETRI_TRANSITIONS=160} [2024-11-16 19:06:02,268 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-11-16 19:06:02,268 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 160 transitions, 2549 flow [2024-11-16 19:06:02,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.277777777777779) internal successors, (203), 18 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:02,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:06:02,269 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:06:02,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 19:06:02,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:06:02,470 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:06:02,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:06:02,470 INFO L85 PathProgramCache]: Analyzing trace with hash 332123765, now seen corresponding path program 4 times [2024-11-16 19:06:02,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:06:02,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957533895] [2024-11-16 19:06:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:06:02,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:06:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:06:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:06:02,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:06:02,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957533895] [2024-11-16 19:06:02,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957533895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:06:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082387147] [2024-11-16 19:06:02,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:06:02,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:06:02,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:06:02,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:06:02,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:06:02,751 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:06:02,751 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:06:02,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 19:06:02,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:06:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:06:02,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:06:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:06:03,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082387147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:06:03,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:06:03,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-16 19:06:03,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183494630] [2024-11-16 19:06:03,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:06:03,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 19:06:03,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:06:03,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 19:06:03,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-16 19:06:03,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:06:03,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 160 transitions, 2549 flow. Second operand has 25 states, 25 states have (on average 11.08) internal successors, (277), 25 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:03,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:06:03,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:06:03,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:06:05,658 INFO L124 PetriNetUnfolderBase]: 2650/5954 cut-off events. [2024-11-16 19:06:05,658 INFO L125 PetriNetUnfolderBase]: For 333257/333694 co-relation queries the response was YES. [2024-11-16 19:06:05,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38065 conditions, 5954 events. 2650/5954 cut-off events. For 333257/333694 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 42148 event pairs, 89 based on Foata normal form. 179/5606 useless extension candidates. Maximal degree in co-relation 37982. Up to 969 conditions per place. [2024-11-16 19:06:05,715 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 164 selfloop transitions, 178 changer transitions 146/495 dead transitions. [2024-11-16 19:06:05,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 495 transitions, 9988 flow [2024-11-16 19:06:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-16 19:06:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-16 19:06:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 798 transitions. [2024-11-16 19:06:05,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-16 19:06:05,718 INFO L175 Difference]: Start difference. First operand has 185 places, 160 transitions, 2549 flow. Second operand 49 states and 798 transitions. [2024-11-16 19:06:05,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 495 transitions, 9988 flow [2024-11-16 19:06:06,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 495 transitions, 8350 flow, removed 786 selfloop flow, removed 20 redundant places. [2024-11-16 19:06:06,102 INFO L231 Difference]: Finished difference. Result has 235 places, 221 transitions, 4105 flow [2024-11-16 19:06:06,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=4105, PETRI_PLACES=235, PETRI_TRANSITIONS=221} [2024-11-16 19:06:06,104 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-11-16 19:06:06,104 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 221 transitions, 4105 flow [2024-11-16 19:06:06,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.08) internal successors, (277), 25 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:06,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:06:06,104 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:06:06,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 19:06:06,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 19:06:06,309 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:06:06,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:06:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash 334659831, now seen corresponding path program 5 times [2024-11-16 19:06:06,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:06:06,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782679964] [2024-11-16 19:06:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:06:06,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:06:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:06:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:06,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:06:06,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782679964] [2024-11-16 19:06:06,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782679964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:06:06,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191319653] [2024-11-16 19:06:06,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:06:06,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:06:06,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:06:06,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:06:06,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:06:06,862 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-16 19:06:06,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:06:06,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 19:06:06,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:06:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:07,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:06:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:07,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191319653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:06:07,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:06:07,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-16 19:06:07,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499746703] [2024-11-16 19:06:07,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:06:07,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 19:06:07,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:06:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 19:06:07,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 19:06:07,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:06:07,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 221 transitions, 4105 flow. Second operand has 41 states, 41 states have (on average 11.121951219512194) internal successors, (456), 41 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:07,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:06:07,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:06:07,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:06:10,745 INFO L124 PetriNetUnfolderBase]: 3100/7433 cut-off events. [2024-11-16 19:06:10,745 INFO L125 PetriNetUnfolderBase]: For 768667/769287 co-relation queries the response was YES. [2024-11-16 19:06:10,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58030 conditions, 7433 events. 3100/7433 cut-off events. For 768667/769287 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 52051 event pairs, 1013 based on Foata normal form. 222/6747 useless extension candidates. Maximal degree in co-relation 57925. Up to 3618 conditions per place. [2024-11-16 19:06:10,804 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 303 selfloop transitions, 61 changer transitions 221/592 dead transitions. [2024-11-16 19:06:10,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 592 transitions, 15819 flow [2024-11-16 19:06:10,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-16 19:06:10,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-11-16 19:06:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 965 transitions. [2024-11-16 19:06:10,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5273224043715847 [2024-11-16 19:06:10,807 INFO L175 Difference]: Start difference. First operand has 235 places, 221 transitions, 4105 flow. Second operand 61 states and 965 transitions. [2024-11-16 19:06:10,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 592 transitions, 15819 flow [2024-11-16 19:06:11,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 592 transitions, 11979 flow, removed 1897 selfloop flow, removed 17 redundant places. [2024-11-16 19:06:11,603 INFO L231 Difference]: Finished difference. Result has 310 places, 251 transitions, 4686 flow [2024-11-16 19:06:11,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=4686, PETRI_PLACES=310, PETRI_TRANSITIONS=251} [2024-11-16 19:06:11,604 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-11-16 19:06:11,604 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 251 transitions, 4686 flow [2024-11-16 19:06:11,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.121951219512194) internal successors, (456), 41 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:11,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:06:11,605 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:06:11,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 19:06:11,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:06:11,805 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:06:11,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:06:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash -5151255, now seen corresponding path program 6 times [2024-11-16 19:06:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:06:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317306815] [2024-11-16 19:06:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:06:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:06:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:06:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:12,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:06:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317306815] [2024-11-16 19:06:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317306815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:06:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292122657] [2024-11-16 19:06:12,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:06:12,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:06:12,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:06:12,369 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:06:12,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 19:06:12,445 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-16 19:06:12,446 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:06:12,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 19:06:12,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:06:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:12,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:06:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:13,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292122657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:06:13,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:06:13,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-16 19:06:13,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59715355] [2024-11-16 19:06:13,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:06:13,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 19:06:13,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:06:13,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 19:06:13,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 19:06:13,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:06:13,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 251 transitions, 4686 flow. Second operand has 41 states, 41 states have (on average 11.121951219512194) internal successors, (456), 41 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:13,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:06:13,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:06:13,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:06:17,181 INFO L124 PetriNetUnfolderBase]: 3730/9083 cut-off events. [2024-11-16 19:06:17,181 INFO L125 PetriNetUnfolderBase]: For 1403699/1406996 co-relation queries the response was YES. [2024-11-16 19:06:17,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79930 conditions, 9083 events. 3730/9083 cut-off events. For 1403699/1406996 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 68001 event pairs, 600 based on Foata normal form. 255/8372 useless extension candidates. Maximal degree in co-relation 79792. Up to 2398 conditions per place. [2024-11-16 19:06:17,277 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 268 selfloop transitions, 194 changer transitions 235/704 dead transitions. [2024-11-16 19:06:17,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 704 transitions, 19573 flow [2024-11-16 19:06:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-16 19:06:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-11-16 19:06:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 1079 transitions. [2024-11-16 19:06:17,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528921568627451 [2024-11-16 19:06:17,280 INFO L175 Difference]: Start difference. First operand has 310 places, 251 transitions, 4686 flow. Second operand 68 states and 1079 transitions. [2024-11-16 19:06:17,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 704 transitions, 19573 flow [2024-11-16 19:06:19,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 704 transitions, 16372 flow, removed 1573 selfloop flow, removed 35 redundant places. [2024-11-16 19:06:19,691 INFO L231 Difference]: Finished difference. Result has 362 places, 320 transitions, 6562 flow [2024-11-16 19:06:19,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3465, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=6562, PETRI_PLACES=362, PETRI_TRANSITIONS=320} [2024-11-16 19:06:19,692 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-11-16 19:06:19,692 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 320 transitions, 6562 flow [2024-11-16 19:06:19,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.121951219512194) internal successors, (456), 41 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:19,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:06:19,693 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:06:19,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 19:06:19,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:06:19,898 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:06:19,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:06:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1193920333, now seen corresponding path program 7 times [2024-11-16 19:06:19,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:06:19,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258903293] [2024-11-16 19:06:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:06:19,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:06:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:06:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:06:20,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:06:20,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258903293] [2024-11-16 19:06:20,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258903293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:06:20,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983226434] [2024-11-16 19:06:20,312 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:06:20,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:06:20,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:06:20,314 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:06:20,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 19:06:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:06:20,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 19:06:20,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:06:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 2 proven. 270 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:06:20,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:06:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:06:21,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983226434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:06:21,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:06:21,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-16 19:06:21,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120597892] [2024-11-16 19:06:21,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:06:21,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 19:06:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:06:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 19:06:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 19:06:21,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:06:21,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 320 transitions, 6562 flow. Second operand has 42 states, 42 states have (on average 11.095238095238095) internal successors, (466), 42 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:21,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:06:21,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:06:21,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:06:26,603 INFO L124 PetriNetUnfolderBase]: 4774/11981 cut-off events. [2024-11-16 19:06:26,603 INFO L125 PetriNetUnfolderBase]: For 2716812/2721216 co-relation queries the response was YES. [2024-11-16 19:06:26,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121079 conditions, 11981 events. 4774/11981 cut-off events. For 2716812/2721216 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 97775 event pairs, 218 based on Foata normal form. 267/11068 useless extension candidates. Maximal degree in co-relation 120920. Up to 2283 conditions per place. [2024-11-16 19:06:26,752 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 238 selfloop transitions, 370 changer transitions 249/864 dead transitions. [2024-11-16 19:06:26,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 864 transitions, 26975 flow [2024-11-16 19:06:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-16 19:06:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2024-11-16 19:06:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 1198 transitions. [2024-11-16 19:06:26,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324444444444445 [2024-11-16 19:06:26,759 INFO L175 Difference]: Start difference. First operand has 362 places, 320 transitions, 6562 flow. Second operand 75 states and 1198 transitions. [2024-11-16 19:06:26,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 864 transitions, 26975 flow [2024-11-16 19:06:33,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 864 transitions, 22733 flow, removed 2069 selfloop flow, removed 37 redundant places. [2024-11-16 19:06:33,343 INFO L231 Difference]: Finished difference. Result has 424 places, 434 transitions, 9915 flow [2024-11-16 19:06:33,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=4926, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=9915, PETRI_PLACES=424, PETRI_TRANSITIONS=434} [2024-11-16 19:06:33,344 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-11-16 19:06:33,345 INFO L471 AbstractCegarLoop]: Abstraction has has 424 places, 434 transitions, 9915 flow [2024-11-16 19:06:33,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 11.095238095238095) internal successors, (466), 42 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:33,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:06:33,345 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:06:33,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 19:06:33,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 19:06:33,546 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:06:33,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:06:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash -193411223, now seen corresponding path program 8 times [2024-11-16 19:06:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:06:33,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195202290] [2024-11-16 19:06:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:06:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:06:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:06:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:33,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:06:33,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195202290] [2024-11-16 19:06:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195202290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:06:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658539791] [2024-11-16 19:06:33,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:06:33,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:06:33,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:06:33,886 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:06:33,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 19:06:33,947 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:06:33,947 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:06:33,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 19:06:33,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:06:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:34,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:06:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:06:34,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658539791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:06:34,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:06:34,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-16 19:06:34,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453961575] [2024-11-16 19:06:34,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:06:34,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 19:06:34,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:06:34,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 19:06:34,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 19:06:34,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:06:34,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 434 transitions, 9915 flow. Second operand has 41 states, 41 states have (on average 11.121951219512194) internal successors, (456), 41 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:34,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:06:34,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:06:34,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:06:41,713 INFO L124 PetriNetUnfolderBase]: 6637/16253 cut-off events. [2024-11-16 19:06:41,713 INFO L125 PetriNetUnfolderBase]: For 5325228/5327879 co-relation queries the response was YES. [2024-11-16 19:06:41,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191538 conditions, 16253 events. 6637/16253 cut-off events. For 5325228/5327879 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 137460 event pairs, 88 based on Foata normal form. 315/15026 useless extension candidates. Maximal degree in co-relation 191353. Up to 3141 conditions per place. [2024-11-16 19:06:42,094 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 285 selfloop transitions, 528 changer transitions 259/1079 dead transitions. [2024-11-16 19:06:42,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1079 transitions, 38578 flow [2024-11-16 19:06:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-16 19:06:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-11-16 19:06:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1427 transitions. [2024-11-16 19:06:42,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540530303030303 [2024-11-16 19:06:42,098 INFO L175 Difference]: Start difference. First operand has 424 places, 434 transitions, 9915 flow. Second operand 88 states and 1427 transitions. [2024-11-16 19:06:42,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1079 transitions, 38578 flow [2024-11-16 19:06:51,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 1079 transitions, 28495 flow, removed 4948 selfloop flow, removed 40 redundant places. [2024-11-16 19:06:51,206 INFO L231 Difference]: Finished difference. Result has 505 places, 570 transitions, 13872 flow [2024-11-16 19:06:51,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=7206, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=395, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=13872, PETRI_PLACES=505, PETRI_TRANSITIONS=570} [2024-11-16 19:06:51,207 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 475 predicate places. [2024-11-16 19:06:51,207 INFO L471 AbstractCegarLoop]: Abstraction has has 505 places, 570 transitions, 13872 flow [2024-11-16 19:06:51,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.121951219512194) internal successors, (456), 41 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:51,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:06:51,208 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:06:51,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 19:06:51,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 19:06:51,409 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:06:51,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:06:51,410 INFO L85 PathProgramCache]: Analyzing trace with hash 840153909, now seen corresponding path program 9 times [2024-11-16 19:06:51,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:06:51,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018452987] [2024-11-16 19:06:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:06:51,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:06:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:06:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:06:51,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:06:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018452987] [2024-11-16 19:06:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018452987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:06:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784454479] [2024-11-16 19:06:51,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:06:51,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:06:51,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:06:51,911 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:06:51,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 19:06:51,986 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-16 19:06:51,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:06:51,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 19:06:51,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:06:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:06:52,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:06:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:06:52,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784454479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:06:52,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:06:52,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 46 [2024-11-16 19:06:52,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293392901] [2024-11-16 19:06:52,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:06:52,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-16 19:06:52,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:06:52,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-16 19:06:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=1661, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 19:06:52,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-16 19:06:52,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 570 transitions, 13872 flow. Second operand has 47 states, 47 states have (on average 11.106382978723405) internal successors, (522), 47 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:06:52,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:06:52,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-16 19:06:52,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand