./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 526eb61a43a151355b0c30c3cdf9498dba5b0f807210313241440694b1deb106 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:18:25,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:18:25,678 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:18:25,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:18:25,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:18:25,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:18:25,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:18:25,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:18:25,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:18:25,712 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:18:25,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:18:25,712 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:18:25,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:18:25,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:18:25,713 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:18:25,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:18:25,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:18:25,713 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:18:25,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:18:25,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:18:25,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:18:25,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:18:25,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:18:25,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:18:25,714 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:18:25,714 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:18:25,714 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:18:25,714 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:18:25,714 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:18:25,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:18:25,714 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:18:25,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:18:25,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:18:25,715 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:18:25,715 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:18:25,715 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:18:25,715 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:18:25,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:18:25,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:18:25,716 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:18:25,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:18:25,716 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:18:25,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:18:25,716 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 526eb61a43a151355b0c30c3cdf9498dba5b0f807210313241440694b1deb106 [2025-03-08 17:18:25,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:18:25,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:18:25,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:18:25,960 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:18:25,961 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:18:25,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2025-03-08 17:18:27,099 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb48c07b2/167acad8b9594633ac73954e6b2507bf/FLAGcbd2eca39 [2025-03-08 17:18:27,395 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:18:27,396 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2025-03-08 17:18:27,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb48c07b2/167acad8b9594633ac73954e6b2507bf/FLAGcbd2eca39 [2025-03-08 17:18:27,674 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb48c07b2/167acad8b9594633ac73954e6b2507bf [2025-03-08 17:18:27,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:18:27,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:18:27,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:18:27,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:18:27,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:18:27,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:18:27" (1/1) ... [2025-03-08 17:18:27,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16bb9e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:27, skipping insertion in model container [2025-03-08 17:18:27,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:18:27" (1/1) ... [2025-03-08 17:18:27,706 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:18:27,840 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i[949,962] [2025-03-08 17:18:27,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:18:27,966 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:18:27,973 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i[949,962] [2025-03-08 17:18:28,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:18:28,054 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:18:28,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28 WrapperNode [2025-03-08 17:18:28,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:18:28,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:18:28,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:18:28,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:18:28,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,091 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2025-03-08 17:18:28,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:18:28,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:18:28,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:18:28,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:18:28,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,102 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,120 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]. [2025-03-08 17:18:28,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,126 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:18:28,131 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:18:28,132 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:18:28,132 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:18:28,132 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (1/1) ... [2025-03-08 17:18:28,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:18:28,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:18:28,159 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) [2025-03-08 17:18:28,164 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 [2025-03-08 17:18:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:18:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:18:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:18:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:18:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:18:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:18:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:18:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:18:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-08 17:18:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-08 17:18:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:18:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:18:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:18:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:18:28,179 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:18:28,293 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:18:28,295 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:18:28,555 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:18:28,555 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:18:28,723 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:18:28,723 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:18:28,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:18:28 BoogieIcfgContainer [2025-03-08 17:18:28,724 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:18:28,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:18:28,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:18:28,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:18:28,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:18:27" (1/3) ... [2025-03-08 17:18:28,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6cef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:18:28, skipping insertion in model container [2025-03-08 17:18:28,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:18:28" (2/3) ... [2025-03-08 17:18:28,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6cef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:18:28, skipping insertion in model container [2025-03-08 17:18:28,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:18:28" (3/3) ... [2025-03-08 17:18:28,731 INFO L128 eAbstractionObserver]: Analyzing ICFG mix037_tso.oepc.i [2025-03-08 17:18:28,741 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:18:28,743 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix037_tso.oepc.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-08 17:18:28,744 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:18:28,797 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:18:28,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-03-08 17:18:28,846 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-03-08 17:18:28,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:18:28,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2025-03-08 17:18:28,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-03-08 17:18:28,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-03-08 17:18:28,856 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:18:28,869 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;@d564bc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:18:28,869 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-08 17:18:28,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:18:28,876 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-03-08 17:18:28,876 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:18:28,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:28,877 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-08 17:18:28,877 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:28,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:28,881 INFO L85 PathProgramCache]: Analyzing trace with hash -181286418, now seen corresponding path program 1 times [2025-03-08 17:18:28,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:28,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826785430] [2025-03-08 17:18:28,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:18:28,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:28,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 17:18:28,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 17:18:28,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:18:28,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:18:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:18:29,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:18:29,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826785430] [2025-03-08 17:18:29,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826785430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:18:29,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:18:29,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 17:18:29,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858243782] [2025-03-08 17:18:29,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:18:29,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:18:29,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:18:29,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:18:29,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:18:29,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-08 17:18:29,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:29,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:18:29,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-08 17:18:29,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:18:33,539 INFO L124 PetriNetUnfolderBase]: 46139/61147 cut-off events. [2025-03-08 17:18:33,539 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2025-03-08 17:18:33,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122151 conditions, 61147 events. 46139/61147 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 367571 event pairs, 5709 based on Foata normal form. 1692/62579 useless extension candidates. Maximal degree in co-relation 122139. Up to 52371 conditions per place. [2025-03-08 17:18:33,861 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 61 selfloop transitions, 2 changer transitions 2/72 dead transitions. [2025-03-08 17:18:33,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 292 flow [2025-03-08 17:18:33,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:18:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:18:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-03-08 17:18:33,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2025-03-08 17:18:33,873 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 101 transitions. [2025-03-08 17:18:33,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 292 flow [2025-03-08 17:18:33,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:18:33,885 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-03-08 17:18:33,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-03-08 17:18:33,892 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-03-08 17:18:33,894 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-03-08 17:18:33,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:33,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:33,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:18:33,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:18:33,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:33,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash 15444957, now seen corresponding path program 1 times [2025-03-08 17:18:33,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:33,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285157209] [2025-03-08 17:18:33,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:18:33,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:33,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:18:33,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:18:33,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:18:33,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:18:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:18:34,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:18:34,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285157209] [2025-03-08 17:18:34,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285157209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:18:34,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:18:34,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:18:34,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124717914] [2025-03-08 17:18:34,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:18:34,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:18:34,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:18:34,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:18:34,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:18:34,247 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-08 17:18:34,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:34,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:18:34,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-08 17:18:34,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:18:38,792 INFO L124 PetriNetUnfolderBase]: 59315/79103 cut-off events. [2025-03-08 17:18:38,792 INFO L125 PetriNetUnfolderBase]: For 3108/3108 co-relation queries the response was YES. [2025-03-08 17:18:38,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160709 conditions, 79103 events. 59315/79103 cut-off events. For 3108/3108 co-relation queries the response was YES. Maximal size of possible extension queue 2174. Compared 470597 event pairs, 13415 based on Foata normal form. 0/77998 useless extension candidates. Maximal degree in co-relation 160699. Up to 37153 conditions per place. [2025-03-08 17:18:39,105 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 54 selfloop transitions, 2 changer transitions 99/160 dead transitions. [2025-03-08 17:18:39,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 160 transitions, 654 flow [2025-03-08 17:18:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:18:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:18:39,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2025-03-08 17:18:39,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5725 [2025-03-08 17:18:39,109 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 229 transitions. [2025-03-08 17:18:39,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 160 transitions, 654 flow [2025-03-08 17:18:39,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 160 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:18:39,117 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 108 flow [2025-03-08 17:18:39,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=108, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2025-03-08 17:18:39,117 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2025-03-08 17:18:39,117 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 108 flow [2025-03-08 17:18:39,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:39,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:39,118 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] [2025-03-08 17:18:39,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:18:39,119 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:39,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:39,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1554729245, now seen corresponding path program 1 times [2025-03-08 17:18:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:39,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852391575] [2025-03-08 17:18:39,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:18:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:39,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 17:18:39,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 17:18:39,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:18:39,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:18:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:18:39,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:18:39,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852391575] [2025-03-08 17:18:39,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852391575] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:18:39,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:18:39,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:18:39,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194543070] [2025-03-08 17:18:39,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:18:39,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:18:39,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:18:39,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:18:39,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:18:39,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-08 17:18:39,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:39,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:18:39,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-08 17:18:39,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:18:43,621 INFO L124 PetriNetUnfolderBase]: 44789/60195 cut-off events. [2025-03-08 17:18:43,621 INFO L125 PetriNetUnfolderBase]: For 10406/10406 co-relation queries the response was YES. [2025-03-08 17:18:43,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129368 conditions, 60195 events. 44789/60195 cut-off events. For 10406/10406 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 364783 event pairs, 9911 based on Foata normal form. 1080/61271 useless extension candidates. Maximal degree in co-relation 129353. Up to 49385 conditions per place. [2025-03-08 17:18:43,920 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 59 selfloop transitions, 3 changer transitions 65/132 dead transitions. [2025-03-08 17:18:43,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 132 transitions, 561 flow [2025-03-08 17:18:43,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:18:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:18:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2025-03-08 17:18:43,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2025-03-08 17:18:43,921 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 108 flow. Second operand 7 states and 192 transitions. [2025-03-08 17:18:43,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 132 transitions, 561 flow [2025-03-08 17:18:44,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 132 transitions, 539 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-08 17:18:44,712 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 131 flow [2025-03-08 17:18:44,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2025-03-08 17:18:44,713 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2025-03-08 17:18:44,713 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 131 flow [2025-03-08 17:18:44,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:44,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:44,713 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] [2025-03-08 17:18:44,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:18:44,714 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:44,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:44,714 INFO L85 PathProgramCache]: Analyzing trace with hash 482561163, now seen corresponding path program 1 times [2025-03-08 17:18:44,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:44,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143773557] [2025-03-08 17:18:44,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:18:44,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:44,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 17:18:44,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 17:18:44,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:18:44,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:18:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:18:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:18:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143773557] [2025-03-08 17:18:45,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143773557] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:18:45,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:18:45,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:18:45,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662646474] [2025-03-08 17:18:45,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:18:45,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:18:45,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:18:45,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:18:45,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:18:45,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-08 17:18:45,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:45,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:18:45,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-08 17:18:45,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:18:49,026 INFO L124 PetriNetUnfolderBase]: 46369/62195 cut-off events. [2025-03-08 17:18:49,027 INFO L125 PetriNetUnfolderBase]: For 29230/29233 co-relation queries the response was YES. [2025-03-08 17:18:49,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146207 conditions, 62195 events. 46369/62195 cut-off events. For 29230/29233 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 374722 event pairs, 9263 based on Foata normal form. 998/63189 useless extension candidates. Maximal degree in co-relation 146191. Up to 48261 conditions per place. [2025-03-08 17:18:49,360 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 79 selfloop transitions, 7 changer transitions 65/156 dead transitions. [2025-03-08 17:18:49,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 156 transitions, 711 flow [2025-03-08 17:18:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:18:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:18:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2025-03-08 17:18:49,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-03-08 17:18:49,362 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 131 flow. Second operand 8 states and 225 transitions. [2025-03-08 17:18:49,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 156 transitions, 711 flow [2025-03-08 17:18:49,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 156 transitions, 700 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-08 17:18:49,800 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 191 flow [2025-03-08 17:18:49,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2025-03-08 17:18:49,800 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2025-03-08 17:18:49,800 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 191 flow [2025-03-08 17:18:49,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:49,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:49,801 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] [2025-03-08 17:18:49,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:18:49,801 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:49,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:49,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1977300041, now seen corresponding path program 1 times [2025-03-08 17:18:49,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:49,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633028949] [2025-03-08 17:18:49,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:18:49,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:49,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-08 17:18:49,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 17:18:49,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:18:49,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:18:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:18:50,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:18:50,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633028949] [2025-03-08 17:18:50,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633028949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:18:50,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:18:50,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:18:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584297184] [2025-03-08 17:18:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:18:50,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:18:50,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:18:50,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:18:50,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:18:50,037 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-08 17:18:50,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:50,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:18:50,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-08 17:18:50,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:18:54,427 INFO L124 PetriNetUnfolderBase]: 45245/60262 cut-off events. [2025-03-08 17:18:54,427 INFO L125 PetriNetUnfolderBase]: For 85221/85224 co-relation queries the response was YES. [2025-03-08 17:18:54,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171532 conditions, 60262 events. 45245/60262 cut-off events. For 85221/85224 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 355841 event pairs, 5328 based on Foata normal form. 722/60978 useless extension candidates. Maximal degree in co-relation 171512. Up to 47433 conditions per place. [2025-03-08 17:18:54,787 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 85 selfloop transitions, 9 changer transitions 61/160 dead transitions. [2025-03-08 17:18:54,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 160 transitions, 875 flow [2025-03-08 17:18:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:18:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:18:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2025-03-08 17:18:54,792 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2025-03-08 17:18:54,792 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 191 flow. Second operand 8 states and 224 transitions. [2025-03-08 17:18:54,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 160 transitions, 875 flow [2025-03-08 17:18:55,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 848 flow, removed 9 selfloop flow, removed 4 redundant places. [2025-03-08 17:18:55,851 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 242 flow [2025-03-08 17:18:55,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=242, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2025-03-08 17:18:55,852 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2025-03-08 17:18:55,852 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 242 flow [2025-03-08 17:18:55,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:55,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:55,852 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] [2025-03-08 17:18:55,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:18:55,853 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:55,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:55,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1425566025, now seen corresponding path program 2 times [2025-03-08 17:18:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:55,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964720676] [2025-03-08 17:18:55,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:18:55,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:55,862 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-03-08 17:18:55,873 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 17:18:55,873 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:18:55,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:18:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:18:56,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:18:56,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964720676] [2025-03-08 17:18:56,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964720676] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:18:56,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:18:56,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:18:56,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038369750] [2025-03-08 17:18:56,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:18:56,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:18:56,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:18:56,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:18:56,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:18:56,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-08 17:18:56,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:56,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:18:56,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-08 17:18:56,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand