./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix004.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix004.oepc.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 81dfcecae183e47a2274a923e55daf761c46d6146ab2c58970ae115599afe231 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:18:35,202 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:18:35,239 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:18:35,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:18:35,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:18:35,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:18:35,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:18:35,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:18:35,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:18:35,260 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:18:35,260 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:18:35,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:18:35,260 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:18:35,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:18:35,260 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:18:35,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:18:35,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:18:35,260 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:18:35,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:18:35,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:18:35,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:18:35,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:18:35,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:18:35,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:18:35,261 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:18:35,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:18:35,261 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:18:35,261 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:18:35,262 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:18:35,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:18:35,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:18:35,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:18:35,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:18:35,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:18:35,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:18:35,262 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:18:35,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:18:35,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:18:35,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:18:35,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:18:35,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:18:35,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:18:35,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:18:35,263 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-jdk21/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 -> 81dfcecae183e47a2274a923e55daf761c46d6146ab2c58970ae115599afe231 [2025-02-06 04:18:35,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:18:35,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:18:35,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:18:35,513 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:18:35,514 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:18:35,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix004.oepc.i [2025-02-06 04:18:36,649 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f45d4eaf4/55c0fa7d9a2449aa9d1c30d10a2cfd5d/FLAG5ef5a581c [2025-02-06 04:18:36,963 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:18:36,963 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix004.oepc.i [2025-02-06 04:18:36,980 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f45d4eaf4/55c0fa7d9a2449aa9d1c30d10a2cfd5d/FLAG5ef5a581c [2025-02-06 04:18:37,221 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f45d4eaf4/55c0fa7d9a2449aa9d1c30d10a2cfd5d [2025-02-06 04:18:37,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:18:37,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:18:37,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:18:37,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:18:37,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:18:37,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8004a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37, skipping insertion in model container [2025-02-06 04:18:37,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:18:37,414 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix004.oepc.i[945,958] [2025-02-06 04:18:37,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:18:37,608 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:18:37,621 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix004.oepc.i[945,958] [2025-02-06 04:18:37,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:18:37,696 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:18:37,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37 WrapperNode [2025-02-06 04:18:37,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:18:37,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:18:37,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:18:37,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:18:37,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,741 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2025-02-06 04:18:37,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:18:37,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:18:37,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:18:37,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:18:37,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,775 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]. [2025-02-06 04:18:37,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,781 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:18:37,786 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:18:37,786 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:18:37,786 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:18:37,787 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (1/1) ... [2025-02-06 04:18:37,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:18:37,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:18:37,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:18:37,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:18:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:18:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:18:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 04:18:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 04:18:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 04:18:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 04:18:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 04:18:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 04:18:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-06 04:18:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-06 04:18:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:18:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:18:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:18:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:18:37,838 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:18:37,936 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:18:37,937 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:18:38,173 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:18:38,173 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:18:38,378 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:18:38,379 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:18:38,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:18:38 BoogieIcfgContainer [2025-02-06 04:18:38,380 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:18:38,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:18:38,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:18:38,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:18:38,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:18:37" (1/3) ... [2025-02-06 04:18:38,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449f611a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:18:38, skipping insertion in model container [2025-02-06 04:18:38,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:18:37" (2/3) ... [2025-02-06 04:18:38,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449f611a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:18:38, skipping insertion in model container [2025-02-06 04:18:38,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:18:38" (3/3) ... [2025-02-06 04:18:38,389 INFO L128 eAbstractionObserver]: Analyzing ICFG mix004.oepc.i [2025-02-06 04:18:38,401 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:18:38,404 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix004.oepc.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 04:18:38,404 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:18:38,457 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:18:38,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-02-06 04:18:38,514 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-02-06 04:18:38,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:18:38,519 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 4. Compared 98 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. [2025-02-06 04:18:38,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-02-06 04:18:38,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-02-06 04:18:38,531 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:18:38,546 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;@3cebe94b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:18:38,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-06 04:18:38,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:18:38,549 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2025-02-06 04:18:38,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:18:38,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:18:38,551 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-06 04:18:38,551 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:18:38,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:18:38,555 INFO L85 PathProgramCache]: Analyzing trace with hash 13370092, now seen corresponding path program 1 times [2025-02-06 04:18:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:18:38,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96859687] [2025-02-06 04:18:38,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:18:38,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:18:38,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 04:18:38,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 04:18:38,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:18:38,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:18:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:18:38,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:18:38,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96859687] [2025-02-06 04:18:38,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96859687] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:18:38,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:18:38,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 04:18:38,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020205645] [2025-02-06 04:18:38,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:18:38,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:18:38,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:18:38,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:18:38,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:18:38,950 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-02-06 04:18:38,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2025-02-06 04:18:38,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:18:38,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-02-06 04:18:38,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:18:43,367 INFO L124 PetriNetUnfolderBase]: 47351/62818 cut-off events. [2025-02-06 04:18:43,367 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2025-02-06 04:18:43,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125466 conditions, 62818 events. 47351/62818 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 1834. Compared 383725 event pairs, 5851 based on Foata normal form. 1722/64240 useless extension candidates. Maximal degree in co-relation 125454. Up to 53751 conditions per place. [2025-02-06 04:18:43,749 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 63 selfloop transitions, 2 changer transitions 2/74 dead transitions. [2025-02-06 04:18:43,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 303 flow [2025-02-06 04:18:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:18:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:18:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-02-06 04:18:43,765 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6866666666666666 [2025-02-06 04:18:43,767 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 103 transitions. [2025-02-06 04:18:43,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 74 transitions, 303 flow [2025-02-06 04:18:43,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 296 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:18:43,777 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-02-06 04:18:43,780 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} [2025-02-06 04:18:43,783 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-02-06 04:18:43,784 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-02-06 04:18:43,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2025-02-06 04:18:43,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:18:43,784 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:18:43,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:18:43,785 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:18:43,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:18:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash 849104405, now seen corresponding path program 1 times [2025-02-06 04:18:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:18:43,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871067400] [2025-02-06 04:18:43,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:18:43,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:18:43,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:18:43,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:18:43,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:18:43,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:18:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:18:44,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:18:44,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871067400] [2025-02-06 04:18:44,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871067400] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:18:44,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:18:44,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:18:44,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255102261] [2025-02-06 04:18:44,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:18:44,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:18:44,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:18:44,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:18:44,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:18:44,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-06 04:18:44,143 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) [2025-02-06 04:18:44,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:18:44,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-06 04:18:44,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:18:49,491 INFO L124 PetriNetUnfolderBase]: 69203/92659 cut-off events. [2025-02-06 04:18:49,491 INFO L125 PetriNetUnfolderBase]: For 3594/3594 co-relation queries the response was YES. [2025-02-06 04:18:49,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187743 conditions, 92659 events. 69203/92659 cut-off events. For 3594/3594 co-relation queries the response was YES. Maximal size of possible extension queue 2691. Compared 573696 event pairs, 35807 based on Foata normal form. 0/90904 useless extension candidates. Maximal degree in co-relation 187733. Up to 61525 conditions per place. [2025-02-06 04:18:49,870 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 50 selfloop transitions, 5 changer transitions 88/148 dead transitions. [2025-02-06 04:18:49,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 612 flow [2025-02-06 04:18:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:18:49,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:18:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2025-02-06 04:18:49,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5425 [2025-02-06 04:18:49,873 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 217 transitions. [2025-02-06 04:18:49,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 612 flow [2025-02-06 04:18:49,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 148 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:18:49,880 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 149 flow [2025-02-06 04:18:49,880 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2025-02-06 04:18:49,881 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2025-02-06 04:18:49,881 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 149 flow [2025-02-06 04:18:49,881 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) [2025-02-06 04:18:49,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:18:49,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:18:49,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:18:49,882 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:18:49,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:18:49,884 INFO L85 PathProgramCache]: Analyzing trace with hash 212097989, now seen corresponding path program 1 times [2025-02-06 04:18:49,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:18:49,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304840305] [2025-02-06 04:18:49,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:18:49,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:18:49,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:18:49,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:18:49,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:18:49,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:18:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:18:50,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:18:50,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304840305] [2025-02-06 04:18:50,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304840305] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:18:50,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:18:50,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:18:50,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625547210] [2025-02-06 04:18:50,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:18:50,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:18:50,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:18:50,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:18:50,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:18:50,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-06 04:18:50,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:18:50,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:18:50,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-06 04:18:50,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:18:54,688 INFO L124 PetriNetUnfolderBase]: 52299/70203 cut-off events. [2025-02-06 04:18:54,688 INFO L125 PetriNetUnfolderBase]: For 52710/52710 co-relation queries the response was YES. [2025-02-06 04:18:54,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178294 conditions, 70203 events. 52299/70203 cut-off events. For 52710/52710 co-relation queries the response was YES. Maximal size of possible extension queue 1992. Compared 428161 event pairs, 10779 based on Foata normal form. 1708/71902 useless extension candidates. Maximal degree in co-relation 178279. Up to 44905 conditions per place. [2025-02-06 04:18:55,096 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 60 selfloop transitions, 3 changer transitions 79/147 dead transitions. [2025-02-06 04:18:55,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 147 transitions, 749 flow [2025-02-06 04:18:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:18:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:18:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2025-02-06 04:18:55,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58 [2025-02-06 04:18:55,098 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 149 flow. Second operand 7 states and 203 transitions. [2025-02-06 04:18:55,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 147 transitions, 749 flow [2025-02-06 04:18:56,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 147 transitions, 736 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-06 04:18:56,298 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 159 flow [2025-02-06 04:18:56,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2025-02-06 04:18:56,299 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2025-02-06 04:18:56,299 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 159 flow [2025-02-06 04:18:56,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:18:56,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:18:56,299 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:18:56,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:18:56,299 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:18:56,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:18:56,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1644035090, now seen corresponding path program 1 times [2025-02-06 04:18:56,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:18:56,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047798342] [2025-02-06 04:18:56,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:18:56,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:18:56,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:18:56,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:18:56,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:18:56,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:18:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:18:56,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:18:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047798342] [2025-02-06 04:18:56,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047798342] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:18:56,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:18:56,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:18:56,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131806437] [2025-02-06 04:18:56,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:18:56,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:18:56,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:18:56,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:18:56,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:18:56,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-06 04:18:56,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-02-06 04:18:56,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:18:56,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-06 04:18:56,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:19:01,000 INFO L124 PetriNetUnfolderBase]: 45755/61323 cut-off events. [2025-02-06 04:19:01,001 INFO L125 PetriNetUnfolderBase]: For 60450/60450 co-relation queries the response was YES. [2025-02-06 04:19:01,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159764 conditions, 61323 events. 45755/61323 cut-off events. For 60450/60450 co-relation queries the response was YES. Maximal size of possible extension queue 1580. Compared 355934 event pairs, 10095 based on Foata normal form. 1260/62570 useless extension candidates. Maximal degree in co-relation 159745. Up to 38761 conditions per place. [2025-02-06 04:19:01,395 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 58 selfloop transitions, 3 changer transitions 71/137 dead transitions. [2025-02-06 04:19:01,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 137 transitions, 702 flow [2025-02-06 04:19:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:19:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:19:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2025-02-06 04:19:01,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5514285714285714 [2025-02-06 04:19:01,396 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 159 flow. Second operand 7 states and 193 transitions. [2025-02-06 04:19:01,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 137 transitions, 702 flow [2025-02-06 04:19:02,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 137 transitions, 678 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-06 04:19:02,424 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 164 flow [2025-02-06 04:19:02,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2025-02-06 04:19:02,425 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2025-02-06 04:19:02,425 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 164 flow [2025-02-06 04:19:02,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-02-06 04:19:02,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:19:02,425 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] [2025-02-06 04:19:02,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:19:02,425 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:19:02,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:19:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2030824978, now seen corresponding path program 1 times [2025-02-06 04:19:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:19:02,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029251746] [2025-02-06 04:19:02,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:19:02,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:19:02,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:19:02,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:19:02,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:19:02,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:19:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:19:02,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:19:02,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029251746] [2025-02-06 04:19:02,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029251746] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:19:02,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:19:02,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:19:02,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101284885] [2025-02-06 04:19:02,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:19:02,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:19:02,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:19:02,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:19:02,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:19:02,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-02-06 04:19:02,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-02-06 04:19:02,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:19:02,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-02-06 04:19:02,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:19:05,853 INFO L124 PetriNetUnfolderBase]: 34215/47243 cut-off events. [2025-02-06 04:19:05,853 INFO L125 PetriNetUnfolderBase]: For 46618/46618 co-relation queries the response was YES. [2025-02-06 04:19:06,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123245 conditions, 47243 events. 34215/47243 cut-off events. For 46618/46618 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 290314 event pairs, 4831 based on Foata normal form. 1764/48996 useless extension candidates. Maximal degree in co-relation 123225. Up to 23653 conditions per place. [2025-02-06 04:19:06,204 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 81 selfloop transitions, 6 changer transitions 1/94 dead transitions. [2025-02-06 04:19:06,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 94 transitions, 498 flow [2025-02-06 04:19:06,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:19:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:19:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2025-02-06 04:19:06,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-02-06 04:19:06,206 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 164 flow. Second operand 4 states and 130 transitions. [2025-02-06 04:19:06,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 94 transitions, 498 flow [2025-02-06 04:19:06,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 480 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-02-06 04:19:06,444 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 192 flow [2025-02-06 04:19:06,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2025-02-06 04:19:06,447 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2025-02-06 04:19:06,447 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 192 flow [2025-02-06 04:19:06,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-02-06 04:19:06,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:19:06,447 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] [2025-02-06 04:19:06,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:19:06,447 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:19:06,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:19:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash -893686176, now seen corresponding path program 1 times [2025-02-06 04:19:06,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:19:06,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134286317] [2025-02-06 04:19:06,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:19:06,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:19:06,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:19:06,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:19:06,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:19:06,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:19:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:19:06,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:19:06,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134286317] [2025-02-06 04:19:06,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134286317] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:19:06,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:19:06,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:19:06,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514036533] [2025-02-06 04:19:06,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:19:06,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:19:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:19:06,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:19:06,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:19:06,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-06 04:19:06,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:19:06,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:19:06,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-06 04:19:06,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:19:11,079 INFO L124 PetriNetUnfolderBase]: 51515/69531 cut-off events. [2025-02-06 04:19:11,079 INFO L125 PetriNetUnfolderBase]: For 61695/61695 co-relation queries the response was YES. [2025-02-06 04:19:11,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193211 conditions, 69531 events. 51515/69531 cut-off events. For 61695/61695 co-relation queries the response was YES. Maximal size of possible extension queue 1816. Compared 421426 event pairs, 3835 based on Foata normal form. 624/70148 useless extension candidates. Maximal degree in co-relation 193193. Up to 35676 conditions per place. [2025-02-06 04:19:11,488 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 94 selfloop transitions, 11 changer transitions 45/155 dead transitions. [2025-02-06 04:19:11,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 155 transitions, 861 flow [2025-02-06 04:19:11,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:19:11,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:19:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2025-02-06 04:19:11,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53 [2025-02-06 04:19:11,490 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 192 flow. Second operand 8 states and 212 transitions. [2025-02-06 04:19:11,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 155 transitions, 861 flow [2025-02-06 04:19:11,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 155 transitions, 837 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 04:19:11,501 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 237 flow [2025-02-06 04:19:11,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=237, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2025-02-06 04:19:11,503 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2025-02-06 04:19:11,504 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 237 flow [2025-02-06 04:19:11,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:19:11,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:19:11,504 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] [2025-02-06 04:19:11,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:19:11,504 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:19:11,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:19:11,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2041065214, now seen corresponding path program 2 times [2025-02-06 04:19:11,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:19:11,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386714799] [2025-02-06 04:19:11,505 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:19:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:19:11,512 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:19:11,533 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:19:11,536 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:19:11,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:19:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:19:11,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:19:11,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386714799] [2025-02-06 04:19:11,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386714799] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:19:11,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:19:11,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:19:11,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42969034] [2025-02-06 04:19:11,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:19:11,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:19:11,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:19:11,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:19:11,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:19:11,640 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-02-06 04:19:11,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2025-02-06 04:19:11,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:19:11,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-02-06 04:19:11,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand