./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-hard1.wvr.c --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/weaver/test-hard1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34f393fd72a97393a0a39d407b9330aa7c1c7e210ad76310ea88c9427f882106 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:34:24,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:34:25,040 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:34:25,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:34:25,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:34:25,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:34:25,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:34:25,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:34:25,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:34:25,063 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:34:25,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:34:25,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:34:25,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:34:25,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:34:25,064 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:34:25,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:34:25,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:34:25,065 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:34:25,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:34:25,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:34:25,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:34:25,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:34:25,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:34:25,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:34:25,068 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:34:25,068 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:34:25,068 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:34:25,068 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:34:25,069 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:34:25,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:34:25,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:34:25,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:34:25,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:34:25,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:34:25,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:34:25,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:34:25,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:34:25,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:34:25,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:34:25,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:34:25,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:34:25,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:34:25,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f393fd72a97393a0a39d407b9330aa7c1c7e210ad76310ea88c9427f882106 [2024-11-16 19:34:25,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:34:25,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:34:25,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:34:25,268 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:34:25,270 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:34:25,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-hard1.wvr.c [2024-11-16 19:34:26,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:34:26,700 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:34:26,701 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-hard1.wvr.c [2024-11-16 19:34:26,707 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b58d3bd/e8e92db7e95b4688a41177c613f1fa39/FLAG0cbd0a570 [2024-11-16 19:34:26,717 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b58d3bd/e8e92db7e95b4688a41177c613f1fa39 [2024-11-16 19:34:26,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:34:26,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:34:26,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:34:26,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:34:26,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:34:26,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:34:26" (1/1) ... [2024-11-16 19:34:26,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@feee02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:26, skipping insertion in model container [2024-11-16 19:34:26,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:34:26" (1/1) ... [2024-11-16 19:34:26,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:34:26,946 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/weaver/test-hard1.wvr.c[3425,3438] [2024-11-16 19:34:26,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:34:26,962 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:34:27,011 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/weaver/test-hard1.wvr.c[3425,3438] [2024-11-16 19:34:27,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:34:27,041 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:34:27,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27 WrapperNode [2024-11-16 19:34:27,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:34:27,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:34:27,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:34:27,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:34:27,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,071 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-11-16 19:34:27,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:34:27,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:34:27,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:34:27,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:34:27,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,084 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,100 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 19:34:27,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,104 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:34:27,108 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:34:27,108 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:34:27,109 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:34:27,109 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (1/1) ... [2024-11-16 19:34:27,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:34:27,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:27,141 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 19:34:27,145 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 19:34:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:34:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:34:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:34:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:34:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:34:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:34:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:34:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-16 19:34:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-16 19:34:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:34:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:34:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:34:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:34:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:34:27,180 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 19:34:27,255 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:34:27,257 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:34:27,405 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:34:27,405 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:34:27,526 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:34:27,527 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:34:27,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:34:27 BoogieIcfgContainer [2024-11-16 19:34:27,527 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:34:27,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:34:27,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:34:27,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:34:27,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:34:26" (1/3) ... [2024-11-16 19:34:27,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a796f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:34:27, skipping insertion in model container [2024-11-16 19:34:27,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:34:27" (2/3) ... [2024-11-16 19:34:27,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a796f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:34:27, skipping insertion in model container [2024-11-16 19:34:27,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:34:27" (3/3) ... [2024-11-16 19:34:27,539 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2024-11-16 19:34:27,553 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:34:27,554 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:34:27,554 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:34:27,601 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-16 19:34:27,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 140 flow [2024-11-16 19:34:27,652 INFO L124 PetriNetUnfolderBase]: 8/52 cut-off events. [2024-11-16 19:34:27,653 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:34:27,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 52 events. 8/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-11-16 19:34:27,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 56 transitions, 140 flow [2024-11-16 19:34:27,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 51 transitions, 126 flow [2024-11-16 19:34:27,665 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:34:27,673 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;@4a7a193d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:34:27,674 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:34:27,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:34:27,695 INFO L124 PetriNetUnfolderBase]: 8/50 cut-off events. [2024-11-16 19:34:27,695 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:34:27,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:27,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:27,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:34:27,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:27,700 INFO L85 PathProgramCache]: Analyzing trace with hash 821786308, now seen corresponding path program 1 times [2024-11-16 19:34:27,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:27,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827503817] [2024-11-16 19:34:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:27,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:27,904 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 19:34:27,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:27,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827503817] [2024-11-16 19:34:27,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827503817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:27,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:27,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:34:27,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320692716] [2024-11-16 19:34:27,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:27,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:34:27,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:27,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:34:27,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:34:27,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-11-16 19:34:27,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 19:34:27,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:27,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-11-16 19:34:27,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:28,410 INFO L124 PetriNetUnfolderBase]: 2477/3585 cut-off events. [2024-11-16 19:34:28,410 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-16 19:34:28,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7090 conditions, 3585 events. 2477/3585 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 20075 event pairs, 1794 based on Foata normal form. 683/3934 useless extension candidates. Maximal degree in co-relation 6364. Up to 3245 conditions per place. [2024-11-16 19:34:28,428 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 30 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-11-16 19:34:28,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 178 flow [2024-11-16 19:34:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:34:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:34:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 76 transitions. [2024-11-16 19:34:28,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-11-16 19:34:28,438 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 126 flow. Second operand 2 states and 76 transitions. [2024-11-16 19:34:28,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 178 flow [2024-11-16 19:34:28,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 162 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-16 19:34:28,445 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 102 flow [2024-11-16 19:34:28,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-11-16 19:34:28,449 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2024-11-16 19:34:28,452 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 102 flow [2024-11-16 19:34:28,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 19:34:28,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:28,453 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:28,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:34:28,453 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:34:28,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:28,454 INFO L85 PathProgramCache]: Analyzing trace with hash -141417402, now seen corresponding path program 1 times [2024-11-16 19:34:28,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:28,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11077292] [2024-11-16 19:34:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:28,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:28,645 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 19:34:28,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:28,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11077292] [2024-11-16 19:34:28,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11077292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:28,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:28,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:34:28,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553416067] [2024-11-16 19:34:28,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:28,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:34:28,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:28,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:34:28,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:34:28,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-11-16 19:34:28,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:28,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:28,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-11-16 19:34:28,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:28,970 INFO L124 PetriNetUnfolderBase]: 3331/4879 cut-off events. [2024-11-16 19:34:28,970 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-16 19:34:28,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9373 conditions, 4879 events. 3331/4879 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 26708 event pairs, 587 based on Foata normal form. 1/4596 useless extension candidates. Maximal degree in co-relation 9370. Up to 3534 conditions per place. [2024-11-16 19:34:28,992 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 47 selfloop transitions, 5 changer transitions 1/70 dead transitions. [2024-11-16 19:34:28,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 261 flow [2024-11-16 19:34:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:34:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:34:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-11-16 19:34:28,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2024-11-16 19:34:28,996 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 102 flow. Second operand 3 states and 117 transitions. [2024-11-16 19:34:28,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 261 flow [2024-11-16 19:34:28,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 261 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:34:28,999 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 135 flow [2024-11-16 19:34:28,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-11-16 19:34:29,000 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-11-16 19:34:29,002 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 135 flow [2024-11-16 19:34:29,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:29,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:29,003 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:29,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:34:29,003 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:34:29,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:29,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2006048836, now seen corresponding path program 1 times [2024-11-16 19:34:29,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:29,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135002083] [2024-11-16 19:34:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:29,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:29,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135002083] [2024-11-16 19:34:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135002083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:29,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:29,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:34:29,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366674881] [2024-11-16 19:34:29,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:29,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:34:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:34:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:34:29,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-11-16 19:34:29,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:34:29,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:29,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-11-16 19:34:29,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:30,013 INFO L124 PetriNetUnfolderBase]: 7398/10669 cut-off events. [2024-11-16 19:34:30,013 INFO L125 PetriNetUnfolderBase]: For 1817/1817 co-relation queries the response was YES. [2024-11-16 19:34:30,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23312 conditions, 10669 events. 7398/10669 cut-off events. For 1817/1817 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 64882 event pairs, 2043 based on Foata normal form. 68/10389 useless extension candidates. Maximal degree in co-relation 23307. Up to 4911 conditions per place. [2024-11-16 19:34:30,067 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 94 selfloop transitions, 15 changer transitions 0/124 dead transitions. [2024-11-16 19:34:30,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 124 transitions, 565 flow [2024-11-16 19:34:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:34:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:34:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-16 19:34:30,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6821428571428572 [2024-11-16 19:34:30,076 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 135 flow. Second operand 5 states and 191 transitions. [2024-11-16 19:34:30,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 124 transitions, 565 flow [2024-11-16 19:34:30,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 124 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:34:30,079 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 234 flow [2024-11-16 19:34:30,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2024-11-16 19:34:30,080 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-16 19:34:30,080 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 234 flow [2024-11-16 19:34:30,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:34:30,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:30,084 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:30,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:34:30,084 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:34:30,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:30,085 INFO L85 PathProgramCache]: Analyzing trace with hash 584337940, now seen corresponding path program 2 times [2024-11-16 19:34:30,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:30,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505674771] [2024-11-16 19:34:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:30,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:30,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:30,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505674771] [2024-11-16 19:34:30,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505674771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:30,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:30,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:34:30,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663193114] [2024-11-16 19:34:30,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:30,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:34:30,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:30,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:34:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:34:30,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-11-16 19:34:30,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 19:34:30,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:30,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-11-16 19:34:30,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:31,586 INFO L124 PetriNetUnfolderBase]: 12217/18387 cut-off events. [2024-11-16 19:34:31,586 INFO L125 PetriNetUnfolderBase]: For 10360/10376 co-relation queries the response was YES. [2024-11-16 19:34:31,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46037 conditions, 18387 events. 12217/18387 cut-off events. For 10360/10376 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 126299 event pairs, 671 based on Foata normal form. 396/18433 useless extension candidates. Maximal degree in co-relation 46029. Up to 8198 conditions per place. [2024-11-16 19:34:31,847 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 166 selfloop transitions, 28 changer transitions 1/210 dead transitions. [2024-11-16 19:34:31,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 210 transitions, 1170 flow [2024-11-16 19:34:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:34:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:34:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 333 transitions. [2024-11-16 19:34:31,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-11-16 19:34:31,850 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 234 flow. Second operand 9 states and 333 transitions. [2024-11-16 19:34:31,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 210 transitions, 1170 flow [2024-11-16 19:34:31,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 210 transitions, 1170 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:34:31,918 INFO L231 Difference]: Finished difference. Result has 73 places, 82 transitions, 443 flow [2024-11-16 19:34:31,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=443, PETRI_PLACES=73, PETRI_TRANSITIONS=82} [2024-11-16 19:34:31,919 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-16 19:34:31,920 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 82 transitions, 443 flow [2024-11-16 19:34:31,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 19:34:31,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:31,921 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:31,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:34:31,921 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:34:31,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash 802129280, now seen corresponding path program 3 times [2024-11-16 19:34:31,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:31,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723852959] [2024-11-16 19:34:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:31,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:32,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:32,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723852959] [2024-11-16 19:34:32,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723852959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:32,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:32,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:34:32,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377651567] [2024-11-16 19:34:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:32,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:34:32,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:32,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:34:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:34:32,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-11-16 19:34:32,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 19:34:32,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:32,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-11-16 19:34:32,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:34,531 INFO L124 PetriNetUnfolderBase]: 19886/29909 cut-off events. [2024-11-16 19:34:34,531 INFO L125 PetriNetUnfolderBase]: For 42928/43450 co-relation queries the response was YES. [2024-11-16 19:34:34,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86582 conditions, 29909 events. 19886/29909 cut-off events. For 42928/43450 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 221377 event pairs, 1617 based on Foata normal form. 361/29924 useless extension candidates. Maximal degree in co-relation 86566. Up to 11495 conditions per place. [2024-11-16 19:34:34,777 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 189 selfloop transitions, 27 changer transitions 0/231 dead transitions. [2024-11-16 19:34:34,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 231 transitions, 1757 flow [2024-11-16 19:34:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:34:34,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:34:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-11-16 19:34:34,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-16 19:34:34,871 INFO L175 Difference]: Start difference. First operand has 73 places, 82 transitions, 443 flow. Second operand 6 states and 224 transitions. [2024-11-16 19:34:34,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 231 transitions, 1757 flow [2024-11-16 19:34:34,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 231 transitions, 1673 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-16 19:34:34,973 INFO L231 Difference]: Finished difference. Result has 80 places, 102 transitions, 657 flow [2024-11-16 19:34:34,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=657, PETRI_PLACES=80, PETRI_TRANSITIONS=102} [2024-11-16 19:34:34,974 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-11-16 19:34:34,974 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 102 transitions, 657 flow [2024-11-16 19:34:34,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 19:34:34,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:34,975 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:34,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:34:34,975 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:34:34,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1639004484, now seen corresponding path program 4 times [2024-11-16 19:34:34,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:34,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640600003] [2024-11-16 19:34:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:35,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:35,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640600003] [2024-11-16 19:34:35,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640600003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:35,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:35,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:34:35,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146354057] [2024-11-16 19:34:35,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:35,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:34:35,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:34:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:34:35,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-16 19:34:35,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 102 transitions, 657 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:35,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:35,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-16 19:34:35,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:40,152 INFO L124 PetriNetUnfolderBase]: 43192/62944 cut-off events. [2024-11-16 19:34:40,153 INFO L125 PetriNetUnfolderBase]: For 139104/141778 co-relation queries the response was YES. [2024-11-16 19:34:40,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199891 conditions, 62944 events. 43192/62944 cut-off events. For 139104/141778 co-relation queries the response was YES. Maximal size of possible extension queue 3191. Compared 485370 event pairs, 8736 based on Foata normal form. 863/62619 useless extension candidates. Maximal degree in co-relation 199871. Up to 19162 conditions per place. [2024-11-16 19:34:40,754 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 239 selfloop transitions, 37 changer transitions 0/291 dead transitions. [2024-11-16 19:34:40,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 291 transitions, 2464 flow [2024-11-16 19:34:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:34:40,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:34:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-11-16 19:34:40,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6994047619047619 [2024-11-16 19:34:40,756 INFO L175 Difference]: Start difference. First operand has 80 places, 102 transitions, 657 flow. Second operand 6 states and 235 transitions. [2024-11-16 19:34:40,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 291 transitions, 2464 flow [2024-11-16 19:34:41,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 291 transitions, 2385 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:34:41,303 INFO L231 Difference]: Finished difference. Result has 89 places, 124 transitions, 968 flow [2024-11-16 19:34:41,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=968, PETRI_PLACES=89, PETRI_TRANSITIONS=124} [2024-11-16 19:34:41,304 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-11-16 19:34:41,304 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 124 transitions, 968 flow [2024-11-16 19:34:41,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:34:41,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:41,305 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:41,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:34:41,305 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:34:41,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:41,306 INFO L85 PathProgramCache]: Analyzing trace with hash 765718106, now seen corresponding path program 5 times [2024-11-16 19:34:41,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:41,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179941744] [2024-11-16 19:34:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:41,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:41,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:41,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179941744] [2024-11-16 19:34:41,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179941744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:41,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:41,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:34:41,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514767720] [2024-11-16 19:34:41,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:41,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:34:41,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:41,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:34:41,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:34:41,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-11-16 19:34:41,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 124 transitions, 968 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:34:41,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:41,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-11-16 19:34:41,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:47,726 INFO L124 PetriNetUnfolderBase]: 50214/76044 cut-off events. [2024-11-16 19:34:47,727 INFO L125 PetriNetUnfolderBase]: For 250664/254579 co-relation queries the response was YES. [2024-11-16 19:34:48,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262599 conditions, 76044 events. 50214/76044 cut-off events. For 250664/254579 co-relation queries the response was YES. Maximal size of possible extension queue 4087. Compared 646378 event pairs, 9841 based on Foata normal form. 1335/75490 useless extension candidates. Maximal degree in co-relation 262575. Up to 24550 conditions per place. [2024-11-16 19:34:48,304 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 227 selfloop transitions, 45 changer transitions 0/290 dead transitions. [2024-11-16 19:34:48,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 290 transitions, 2738 flow [2024-11-16 19:34:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:34:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:34:48,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-16 19:34:48,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6892857142857143 [2024-11-16 19:34:48,305 INFO L175 Difference]: Start difference. First operand has 89 places, 124 transitions, 968 flow. Second operand 5 states and 193 transitions. [2024-11-16 19:34:48,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 290 transitions, 2738 flow [2024-11-16 19:34:49,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 290 transitions, 2730 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-16 19:34:49,298 INFO L231 Difference]: Finished difference. Result has 96 places, 139 transitions, 1313 flow [2024-11-16 19:34:49,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1313, PETRI_PLACES=96, PETRI_TRANSITIONS=139} [2024-11-16 19:34:49,299 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-11-16 19:34:49,299 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 139 transitions, 1313 flow [2024-11-16 19:34:49,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:34:49,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:49,299 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:49,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:34:49,300 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:34:49,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1741562272, now seen corresponding path program 6 times [2024-11-16 19:34:49,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:49,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430846378] [2024-11-16 19:34:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:49,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:34:49,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430846378] [2024-11-16 19:34:49,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430846378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:34:49,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:34:49,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:34:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829610188] [2024-11-16 19:34:49,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:34:49,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:34:49,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:49,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:34:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:34:49,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-16 19:34:49,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 139 transitions, 1313 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 19:34:49,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:49,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-16 19:34:49,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:35:01,346 INFO L124 PetriNetUnfolderBase]: 79720/120010 cut-off events. [2024-11-16 19:35:01,346 INFO L125 PetriNetUnfolderBase]: For 439223/450289 co-relation queries the response was YES. [2024-11-16 19:35:02,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431595 conditions, 120010 events. 79720/120010 cut-off events. For 439223/450289 co-relation queries the response was YES. Maximal size of possible extension queue 6336. Compared 1045142 event pairs, 20596 based on Foata normal form. 3174/120914 useless extension candidates. Maximal degree in co-relation 431567. Up to 71670 conditions per place. [2024-11-16 19:35:02,833 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 235 selfloop transitions, 75 changer transitions 0/326 dead transitions. [2024-11-16 19:35:02,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 326 transitions, 3519 flow [2024-11-16 19:35:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:35:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:35:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 262 transitions. [2024-11-16 19:35:02,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6683673469387755 [2024-11-16 19:35:02,837 INFO L175 Difference]: Start difference. First operand has 96 places, 139 transitions, 1313 flow. Second operand 7 states and 262 transitions. [2024-11-16 19:35:02,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 326 transitions, 3519 flow [2024-11-16 19:35:04,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 326 transitions, 3427 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:35:04,902 INFO L231 Difference]: Finished difference. Result has 105 places, 198 transitions, 2292 flow [2024-11-16 19:35:04,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2292, PETRI_PLACES=105, PETRI_TRANSITIONS=198} [2024-11-16 19:35:04,903 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-11-16 19:35:04,903 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 198 transitions, 2292 flow [2024-11-16 19:35:04,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 19:35:04,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:35:04,904 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:35:04,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:35:04,904 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:35:04,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:35:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1264499774, now seen corresponding path program 7 times [2024-11-16 19:35:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:35:04,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661946599] [2024-11-16 19:35:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:35:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:35:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:35:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:35:05,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:35:05,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661946599] [2024-11-16 19:35:05,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661946599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:35:05,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:35:05,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:35:05,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648665764] [2024-11-16 19:35:05,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:35:05,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:35:05,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:35:05,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:35:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:35:05,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-16 19:35:05,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 198 transitions, 2292 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 19:35:05,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:35:05,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-16 19:35:05,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand