./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/popl20-min-max-dec.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 47814a6c2066a31334f0b50a42e69cfeb567d5dd7f02dc6c703588c90e067366 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:25:04,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:25:05,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:25:05,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:25:05,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:25:05,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:25:05,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:25:05,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:25:05,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:25:05,081 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:25:05,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:25:05,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:25:05,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:25:05,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:25:05,083 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:25:05,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:25:05,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:25:05,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:25:05,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:25:05,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:25:05,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:25:05,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:25:05,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:25:05,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:25:05,087 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:25:05,087 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:25:05,087 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:25:05,087 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:25:05,088 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:25:05,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:25:05,088 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:25:05,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:25:05,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:25:05,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:25:05,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:25:05,090 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:25:05,090 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:25:05,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:25:05,091 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:25:05,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:25:05,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:25:05,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:25:05,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47814a6c2066a31334f0b50a42e69cfeb567d5dd7f02dc6c703588c90e067366 [2024-11-12 08:25:05,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:25:05,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:25:05,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:25:05,354 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:25:05,355 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:25:05,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2024-11-12 08:25:06,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:25:06,940 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:25:06,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2024-11-12 08:25:06,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f269ceb7/5f65789292fb4811812eb38fe4e76f32/FLAG91963f5ff [2024-11-12 08:25:07,308 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f269ceb7/5f65789292fb4811812eb38fe4e76f32 [2024-11-12 08:25:07,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:25:07,312 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:25:07,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:25:07,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:25:07,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:25:07,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293faf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07, skipping insertion in model container [2024-11-12 08:25:07,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,345 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:25:07,666 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/popl20-min-max-dec.wvr.c[2683,2696] [2024-11-12 08:25:07,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:25:07,698 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:25:07,725 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/popl20-min-max-dec.wvr.c[2683,2696] [2024-11-12 08:25:07,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:25:07,751 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:25:07,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07 WrapperNode [2024-11-12 08:25:07,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:25:07,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:25:07,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:25:07,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:25:07,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,786 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2024-11-12 08:25:07,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:25:07,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:25:07,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:25:07,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:25:07,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,824 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-12 08:25:07,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:25:07,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:25:07,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:25:07,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:25:07,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (1/1) ... [2024-11-12 08:25:07,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:25:07,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:25:07,900 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) [2024-11-12 08:25:07,907 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 [2024-11-12 08:25:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:25:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:25:07,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:25:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:25:07,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:25:07,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 08:25:07,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 08:25:07,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-12 08:25:07,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-12 08:25:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:25:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:25:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:25:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:25:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 08:25:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:25:07,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:25:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:25:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:25:07,963 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:25:08,092 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:25:08,095 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:25:08,425 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:25:08,426 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:25:08,615 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:25:08,615 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-12 08:25:08,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:25:08 BoogieIcfgContainer [2024-11-12 08:25:08,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:25:08,619 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:25:08,619 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:25:08,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:25:08,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:25:07" (1/3) ... [2024-11-12 08:25:08,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2665ebc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:25:08, skipping insertion in model container [2024-11-12 08:25:08,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:07" (2/3) ... [2024-11-12 08:25:08,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2665ebc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:25:08, skipping insertion in model container [2024-11-12 08:25:08,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:25:08" (3/3) ... [2024-11-12 08:25:08,627 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2024-11-12 08:25:08,641 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:25:08,641 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:25:08,641 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:25:08,701 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 08:25:08,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 62 transitions, 152 flow [2024-11-12 08:25:08,785 INFO L124 PetriNetUnfolderBase]: 6/58 cut-off events. [2024-11-12 08:25:08,785 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 08:25:08,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 6/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 127 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-11-12 08:25:08,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 62 transitions, 152 flow [2024-11-12 08:25:08,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 57 transitions, 138 flow [2024-11-12 08:25:08,805 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:25:08,812 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;@71a08141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:25:08,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-12 08:25:08,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:25:08,835 INFO L124 PetriNetUnfolderBase]: 6/56 cut-off events. [2024-11-12 08:25:08,835 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 08:25:08,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:08,836 INFO L206 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, 1, 1] [2024-11-12 08:25:08,837 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)] === [2024-11-12 08:25:08,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:08,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2024169663, now seen corresponding path program 1 times [2024-11-12 08:25:08,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:08,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080415857] [2024-11-12 08:25:08,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:08,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:25:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080415857] [2024-11-12 08:25:09,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080415857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:09,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:09,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:25:09,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784929730] [2024-11-12 08:25:09,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:09,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:25:09,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:09,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:25:09,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:25:09,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2024-11-12 08:25:09,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:09,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:09,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2024-11-12 08:25:09,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:11,175 INFO L124 PetriNetUnfolderBase]: 11334/16648 cut-off events. [2024-11-12 08:25:11,176 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-11-12 08:25:11,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31544 conditions, 16648 events. 11334/16648 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 112395 event pairs, 5075 based on Foata normal form. 309/16215 useless extension candidates. Maximal degree in co-relation 29703. Up to 8424 conditions per place. [2024-11-12 08:25:11,321 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 54 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-12 08:25:11,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 303 flow [2024-11-12 08:25:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:25:11,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:25:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-12 08:25:11,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6370967741935484 [2024-11-12 08:25:11,336 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 138 flow. Second operand 4 states and 158 transitions. [2024-11-12 08:25:11,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 303 flow [2024-11-12 08:25:11,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 281 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-12 08:25:11,364 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 136 flow [2024-11-12 08:25:11,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2024-11-12 08:25:11,369 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2024-11-12 08:25:11,369 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 136 flow [2024-11-12 08:25:11,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:11,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:11,370 INFO L206 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:25:11,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:25:11,370 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)] === [2024-11-12 08:25:11,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:11,372 INFO L85 PathProgramCache]: Analyzing trace with hash -273432403, now seen corresponding path program 1 times [2024-11-12 08:25:11,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:11,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288286494] [2024-11-12 08:25:11,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:11,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:25:11,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:11,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288286494] [2024-11-12 08:25:11,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288286494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:11,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:11,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:25:11,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720513702] [2024-11-12 08:25:11,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:11,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:25:11,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:11,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:25:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:25:11,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-12 08:25:11,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:11,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:11,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-12 08:25:11,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:13,779 INFO L124 PetriNetUnfolderBase]: 16337/24718 cut-off events. [2024-11-12 08:25:13,780 INFO L125 PetriNetUnfolderBase]: For 2302/2302 co-relation queries the response was YES. [2024-11-12 08:25:13,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47276 conditions, 24718 events. 16337/24718 cut-off events. For 2302/2302 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 176829 event pairs, 8357 based on Foata normal form. 494/23751 useless extension candidates. Maximal degree in co-relation 4458. Up to 13377 conditions per place. [2024-11-12 08:25:13,951 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 59 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-11-12 08:25:13,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 82 transitions, 321 flow [2024-11-12 08:25:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:25:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:25:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-11-12 08:25:13,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6330645161290323 [2024-11-12 08:25:13,953 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 136 flow. Second operand 4 states and 157 transitions. [2024-11-12 08:25:13,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 82 transitions, 321 flow [2024-11-12 08:25:13,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 82 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:25:13,963 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 146 flow [2024-11-12 08:25:13,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-12 08:25:13,966 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2024-11-12 08:25:13,966 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 146 flow [2024-11-12 08:25:13,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:13,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:13,966 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:25:13,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:25:13,967 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)] === [2024-11-12 08:25:13,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:13,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1725278555, now seen corresponding path program 1 times [2024-11-12 08:25:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:13,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933635347] [2024-11-12 08:25:13,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:25:14,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:14,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933635347] [2024-11-12 08:25:14,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933635347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:14,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:14,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:25:14,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790223259] [2024-11-12 08:25:14,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:14,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:25:14,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:14,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:25:14,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:25:14,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-12 08:25:14,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:14,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:14,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-12 08:25:14,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:16,470 INFO L124 PetriNetUnfolderBase]: 20760/31551 cut-off events. [2024-11-12 08:25:16,471 INFO L125 PetriNetUnfolderBase]: For 4069/4803 co-relation queries the response was YES. [2024-11-12 08:25:16,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63050 conditions, 31551 events. 20760/31551 cut-off events. For 4069/4803 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 226128 event pairs, 11156 based on Foata normal form. 1420/31182 useless extension candidates. Maximal degree in co-relation 20255. Up to 16911 conditions per place. [2024-11-12 08:25:16,706 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 60 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2024-11-12 08:25:16,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 338 flow [2024-11-12 08:25:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:25:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:25:16,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-12 08:25:16,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6290322580645161 [2024-11-12 08:25:16,708 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 146 flow. Second operand 4 states and 156 transitions. [2024-11-12 08:25:16,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 338 flow [2024-11-12 08:25:16,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:25:16,714 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 156 flow [2024-11-12 08:25:16,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-11-12 08:25:16,715 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-11-12 08:25:16,715 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 156 flow [2024-11-12 08:25:16,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:16,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:16,716 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:25:16,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:25:16,717 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)] === [2024-11-12 08:25:16,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:16,718 INFO L85 PathProgramCache]: Analyzing trace with hash -165344647, now seen corresponding path program 1 times [2024-11-12 08:25:16,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:16,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353993965] [2024-11-12 08:25:16,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:16,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:25:16,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:16,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353993965] [2024-11-12 08:25:16,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353993965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:16,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:16,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:25:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976267038] [2024-11-12 08:25:16,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:16,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:25:16,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:16,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:25:16,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:25:16,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 62 [2024-11-12 08:25:16,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:16,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:16,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 62 [2024-11-12 08:25:16,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:18,712 INFO L124 PetriNetUnfolderBase]: 18370/27689 cut-off events. [2024-11-12 08:25:18,712 INFO L125 PetriNetUnfolderBase]: For 5103/6413 co-relation queries the response was YES. [2024-11-12 08:25:18,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57796 conditions, 27689 events. 18370/27689 cut-off events. For 5103/6413 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 195767 event pairs, 15082 based on Foata normal form. 1310/27483 useless extension candidates. Maximal degree in co-relation 19096. Up to 22509 conditions per place. [2024-11-12 08:25:18,883 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 37 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-11-12 08:25:18,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 236 flow [2024-11-12 08:25:18,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:25:18,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:25:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-12 08:25:18,887 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6182795698924731 [2024-11-12 08:25:18,888 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 156 flow. Second operand 3 states and 115 transitions. [2024-11-12 08:25:18,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 236 flow [2024-11-12 08:25:18,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:25:18,893 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 164 flow [2024-11-12 08:25:18,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-11-12 08:25:18,895 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2024-11-12 08:25:18,895 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 164 flow [2024-11-12 08:25:18,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:18,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:18,896 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:25:18,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:25:18,897 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)] === [2024-11-12 08:25:18,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:18,898 INFO L85 PathProgramCache]: Analyzing trace with hash -779375995, now seen corresponding path program 1 times [2024-11-12 08:25:18,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:18,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8974108] [2024-11-12 08:25:18,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:18,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:25:19,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8974108] [2024-11-12 08:25:19,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8974108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:19,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:19,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:25:19,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29569007] [2024-11-12 08:25:19,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:19,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:25:19,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:19,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:25:19,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:25:19,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2024-11-12 08:25:19,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:19,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:19,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2024-11-12 08:25:19,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:40,560 INFO L124 PetriNetUnfolderBase]: 211500/305360 cut-off events. [2024-11-12 08:25:40,560 INFO L125 PetriNetUnfolderBase]: For 55572/62879 co-relation queries the response was YES. [2024-11-12 08:25:41,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651259 conditions, 305360 events. 211500/305360 cut-off events. For 55572/62879 co-relation queries the response was YES. Maximal size of possible extension queue 8010. Compared 2530436 event pairs, 12155 based on Foata normal form. 7315/302519 useless extension candidates. Maximal degree in co-relation 651242. Up to 59522 conditions per place. [2024-11-12 08:25:42,295 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 470 selfloop transitions, 81 changer transitions 473/1039 dead transitions. [2024-11-12 08:25:42,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 1039 transitions, 4944 flow [2024-11-12 08:25:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-12 08:25:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-12 08:25:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1859 transitions. [2024-11-12 08:25:42,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6119157340355497 [2024-11-12 08:25:42,303 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 164 flow. Second operand 49 states and 1859 transitions. [2024-11-12 08:25:42,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 1039 transitions, 4944 flow [2024-11-12 08:25:43,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 1039 transitions, 4940 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 08:25:43,320 INFO L231 Difference]: Finished difference. Result has 152 places, 148 transitions, 782 flow [2024-11-12 08:25:43,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=782, PETRI_PLACES=152, PETRI_TRANSITIONS=148} [2024-11-12 08:25:43,321 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 88 predicate places. [2024-11-12 08:25:43,322 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 148 transitions, 782 flow [2024-11-12 08:25:43,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:43,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:43,323 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:25:43,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:25:43,323 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)] === [2024-11-12 08:25:43,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash -197695997, now seen corresponding path program 2 times [2024-11-12 08:25:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:43,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406049184] [2024-11-12 08:25:43,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:43,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:25:43,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:43,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406049184] [2024-11-12 08:25:43,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406049184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:43,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:43,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:25:43,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220343567] [2024-11-12 08:25:43,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:43,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:25:43,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:43,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:25:43,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:25:43,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2024-11-12 08:25:43,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 148 transitions, 782 flow. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:43,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:43,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2024-11-12 08:25:43,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand