./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-hard1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/weaver/test-hard1.wvr.c -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 34f393fd72a97393a0a39d407b9330aa7c1c7e210ad76310ea88c9427f882106 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:21:23,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:21:23,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:21:23,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:21:23,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:21:23,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:21:23,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:21:23,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:21:23,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:21:23,209 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:21:23,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:21:23,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:21:23,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:21:23,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:21:23,210 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:21:23,210 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:21:23,210 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:21:23,210 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:21:23,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:21:23,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:21:23,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:21:23,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:21:23,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:21:23,211 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:21:23,211 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:21:23,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:21:23,211 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:21:23,211 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:21:23,211 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:21:23,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:21:23,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:21:23,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:21:23,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:21:23,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:21:23,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:21:23,212 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:21:23,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:21:23,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:21:23,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:21:23,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:21:23,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:21:23,212 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:21:23,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:21:23,212 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 -> 34f393fd72a97393a0a39d407b9330aa7c1c7e210ad76310ea88c9427f882106 [2025-02-08 01:21:23,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:21:23,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:21:23,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:21:23,453 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:21:23,453 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:21:23,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-hard1.wvr.c [2025-02-08 01:21:24,593 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0be8a2df1/36a39cfe7d6e4f30b2d5ae27f88ed299/FLAG2ad840a1e [2025-02-08 01:21:24,810 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:21:24,811 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-hard1.wvr.c [2025-02-08 01:21:24,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0be8a2df1/36a39cfe7d6e4f30b2d5ae27f88ed299/FLAG2ad840a1e [2025-02-08 01:21:25,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0be8a2df1/36a39cfe7d6e4f30b2d5ae27f88ed299 [2025-02-08 01:21:25,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:21:25,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:21:25,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:21:25,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:21:25,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:21:25,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f13129e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25, skipping insertion in model container [2025-02-08 01:21:25,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,203 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:21:25,332 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/weaver/test-hard1.wvr.c[3425,3438] [2025-02-08 01:21:25,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:21:25,342 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:21:25,358 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/weaver/test-hard1.wvr.c[3425,3438] [2025-02-08 01:21:25,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:21:25,368 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:21:25,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25 WrapperNode [2025-02-08 01:21:25,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:21:25,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:21:25,370 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:21:25,370 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:21:25,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,388 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2025-02-08 01:21:25,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:21:25,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:21:25,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:21:25,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:21:25,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,395 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,404 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]. [2025-02-08 01:21:25,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,407 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:21:25,411 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:21:25,411 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:21:25,411 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:21:25,412 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (1/1) ... [2025-02-08 01:21:25,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:21:25,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:21:25,433 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) [2025-02-08 01:21:25,435 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 [2025-02-08 01:21:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:21:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:21:25,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:21:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:21:25,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:21:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:21:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:21:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 01:21:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 01:21:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:21:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:21:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:21:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:21:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:21:25,452 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:21:25,514 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:21:25,515 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:21:25,671 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:21:25,671 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:21:25,803 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:21:25,804 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:21:25,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:21:25 BoogieIcfgContainer [2025-02-08 01:21:25,804 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:21:25,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:21:25,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:21:25,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:21:25,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:21:25" (1/3) ... [2025-02-08 01:21:25,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98e5067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:21:25, skipping insertion in model container [2025-02-08 01:21:25,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:25" (2/3) ... [2025-02-08 01:21:25,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98e5067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:21:25, skipping insertion in model container [2025-02-08 01:21:25,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:21:25" (3/3) ... [2025-02-08 01:21:25,811 INFO L128 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2025-02-08 01:21:25,821 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:21:25,824 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-hard1.wvr.c that has 5 procedures, 41 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-08 01:21:25,824 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:21:25,872 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 01:21:25,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 44 transitions, 116 flow [2025-02-08 01:21:25,926 INFO L124 PetriNetUnfolderBase]: 4/40 cut-off events. [2025-02-08 01:21:25,928 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 01:21:25,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 40 events. 4/40 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-02-08 01:21:25,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 44 transitions, 116 flow [2025-02-08 01:21:25,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 39 transitions, 102 flow [2025-02-08 01:21:25,941 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:21:25,948 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;@66e0019, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:21:25,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-08 01:21:25,965 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:21:25,965 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2025-02-08 01:21:25,965 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 01:21:25,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:25,966 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:25,966 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 01:21:25,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:25,970 INFO L85 PathProgramCache]: Analyzing trace with hash -435509349, now seen corresponding path program 1 times [2025-02-08 01:21:25,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:25,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69885526] [2025-02-08 01:21:25,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:25,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:26,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 01:21:26,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:21:26,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:26,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:26,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:26,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69885526] [2025-02-08 01:21:26,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69885526] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:26,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:26,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:21:26,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667295961] [2025-02-08 01:21:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:26,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:21:26,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:26,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:21:26,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:21:26,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2025-02-08 01:21:26,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2025-02-08 01:21:26,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:26,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2025-02-08 01:21:26,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:26,778 INFO L124 PetriNetUnfolderBase]: 3331/4541 cut-off events. [2025-02-08 01:21:26,778 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2025-02-08 01:21:26,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9284 conditions, 4541 events. 3331/4541 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 20604 event pairs, 587 based on Foata normal form. 1/4475 useless extension candidates. Maximal degree in co-relation 8234. Up to 3534 conditions per place. [2025-02-08 01:21:26,815 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 47 selfloop transitions, 5 changer transitions 1/62 dead transitions. [2025-02-08 01:21:26,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 275 flow [2025-02-08 01:21:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:21:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:21:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-02-08 01:21:26,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-02-08 01:21:26,831 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 102 flow. Second operand 3 states and 93 transitions. [2025-02-08 01:21:26,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 275 flow [2025-02-08 01:21:26,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 245 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-08 01:21:26,844 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 119 flow [2025-02-08 01:21:26,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2025-02-08 01:21:26,850 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2025-02-08 01:21:26,851 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 119 flow [2025-02-08 01:21:26,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2025-02-08 01:21:26,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:26,852 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:26,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:21:26,853 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 01:21:26,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash -273224108, now seen corresponding path program 1 times [2025-02-08 01:21:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:26,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520446939] [2025-02-08 01:21:26,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:26,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:26,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 01:21:26,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 01:21:26,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:26,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:27,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:27,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520446939] [2025-02-08 01:21:27,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520446939] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:27,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:27,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:21:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132970718] [2025-02-08 01:21:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:27,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:21:27,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:27,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:21:27,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:21:27,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-08 01:21:27,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 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) [2025-02-08 01:21:27,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:27,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-08 01:21:27,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:27,985 INFO L124 PetriNetUnfolderBase]: 7323/10064 cut-off events. [2025-02-08 01:21:27,986 INFO L125 PetriNetUnfolderBase]: For 2052/2052 co-relation queries the response was YES. [2025-02-08 01:21:27,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22908 conditions, 10064 events. 7323/10064 cut-off events. For 2052/2052 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 55196 event pairs, 1628 based on Foata normal form. 0/9517 useless extension candidates. Maximal degree in co-relation 6147. Up to 3843 conditions per place. [2025-02-08 01:21:28,038 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 120 selfloop transitions, 17 changer transitions 0/145 dead transitions. [2025-02-08 01:21:28,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 145 transitions, 691 flow [2025-02-08 01:21:28,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:21:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:21:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2025-02-08 01:21:28,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-02-08 01:21:28,041 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 119 flow. Second operand 6 states and 192 transitions. [2025-02-08 01:21:28,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 145 transitions, 691 flow [2025-02-08 01:21:28,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 145 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:21:28,043 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 260 flow [2025-02-08 01:21:28,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2025-02-08 01:21:28,045 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2025-02-08 01:21:28,046 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 260 flow [2025-02-08 01:21:28,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 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) [2025-02-08 01:21:28,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:28,046 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:28,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:21:28,047 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 01:21:28,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:28,048 INFO L85 PathProgramCache]: Analyzing trace with hash 63919700, now seen corresponding path program 2 times [2025-02-08 01:21:28,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:28,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216283456] [2025-02-08 01:21:28,049 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:21:28,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:28,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 1 equivalence classes. [2025-02-08 01:21:28,075 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 01:21:28,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:21:28,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:28,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:28,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216283456] [2025-02-08 01:21:28,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216283456] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:28,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:28,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:21:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514919853] [2025-02-08 01:21:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:28,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:21:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:28,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:21:28,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:21:28,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-08 01:21:28,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2025-02-08 01:21:28,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:28,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-08 01:21:28,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:29,680 INFO L124 PetriNetUnfolderBase]: 15994/22238 cut-off events. [2025-02-08 01:21:29,681 INFO L125 PetriNetUnfolderBase]: For 23201/23201 co-relation queries the response was YES. [2025-02-08 01:21:29,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64442 conditions, 22238 events. 15994/22238 cut-off events. For 23201/23201 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 132356 event pairs, 1434 based on Foata normal form. 616/22796 useless extension candidates. Maximal degree in co-relation 33995. Up to 8335 conditions per place. [2025-02-08 01:21:29,802 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 198 selfloop transitions, 59 changer transitions 0/265 dead transitions. [2025-02-08 01:21:29,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 265 transitions, 1707 flow [2025-02-08 01:21:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:21:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 01:21:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2025-02-08 01:21:29,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2025-02-08 01:21:29,806 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 260 flow. Second operand 9 states and 292 transitions. [2025-02-08 01:21:29,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 265 transitions, 1707 flow [2025-02-08 01:21:29,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 265 transitions, 1707 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:21:29,885 INFO L231 Difference]: Finished difference. Result has 67 places, 115 transitions, 866 flow [2025-02-08 01:21:29,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=866, PETRI_PLACES=67, PETRI_TRANSITIONS=115} [2025-02-08 01:21:29,887 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2025-02-08 01:21:29,887 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 115 transitions, 866 flow [2025-02-08 01:21:29,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2025-02-08 01:21:29,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:29,888 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:29,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:21:29,888 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 01:21:29,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:29,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1856908026, now seen corresponding path program 1 times [2025-02-08 01:21:29,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:29,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492684742] [2025-02-08 01:21:29,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:29,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 01:21:29,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 01:21:29,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:29,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:30,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492684742] [2025-02-08 01:21:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492684742] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:30,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:30,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:21:30,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451477322] [2025-02-08 01:21:30,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:30,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:21:30,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:30,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:21:30,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:21:30,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-08 01:21:30,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 115 transitions, 866 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2025-02-08 01:21:30,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:30,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-08 01:21:30,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:33,292 INFO L124 PetriNetUnfolderBase]: 35958/49635 cut-off events. [2025-02-08 01:21:33,292 INFO L125 PetriNetUnfolderBase]: For 141625/141981 co-relation queries the response was YES. [2025-02-08 01:21:33,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186693 conditions, 49635 events. 35958/49635 cut-off events. For 141625/141981 co-relation queries the response was YES. Maximal size of possible extension queue 2285. Compared 317131 event pairs, 2139 based on Foata normal form. 1373/50626 useless extension candidates. Maximal degree in co-relation 122833. Up to 16468 conditions per place. [2025-02-08 01:21:33,617 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 238 selfloop transitions, 189 changer transitions 0/436 dead transitions. [2025-02-08 01:21:33,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 436 transitions, 4047 flow [2025-02-08 01:21:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:21:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 01:21:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 286 transitions. [2025-02-08 01:21:33,621 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2025-02-08 01:21:33,621 INFO L175 Difference]: Start difference. First operand has 67 places, 115 transitions, 866 flow. Second operand 9 states and 286 transitions. [2025-02-08 01:21:33,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 436 transitions, 4047 flow [2025-02-08 01:21:34,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 436 transitions, 4047 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:21:34,335 INFO L231 Difference]: Finished difference. Result has 82 places, 267 transitions, 2966 flow [2025-02-08 01:21:34,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2966, PETRI_PLACES=82, PETRI_TRANSITIONS=267} [2025-02-08 01:21:34,336 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 34 predicate places. [2025-02-08 01:21:34,336 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 267 transitions, 2966 flow [2025-02-08 01:21:34,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2025-02-08 01:21:34,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:34,336 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:34,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:21:34,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 01:21:34,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:34,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1970992990, now seen corresponding path program 3 times [2025-02-08 01:21:34,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:34,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005862480] [2025-02-08 01:21:34,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:21:34,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:34,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 2 equivalence classes. [2025-02-08 01:21:34,356 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 01:21:34,356 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:21:34,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:34,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005862480] [2025-02-08 01:21:34,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005862480] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:34,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:34,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:21:34,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178400211] [2025-02-08 01:21:34,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:34,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:21:34,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:34,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:21:34,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:21:34,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-02-08 01:21:34,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 267 transitions, 2966 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2025-02-08 01:21:34,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:34,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-02-08 01:21:34,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:42,930 INFO L124 PetriNetUnfolderBase]: 84274/115037 cut-off events. [2025-02-08 01:21:42,930 INFO L125 PetriNetUnfolderBase]: For 576457/577229 co-relation queries the response was YES. [2025-02-08 01:21:43,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498446 conditions, 115037 events. 84274/115037 cut-off events. For 576457/577229 co-relation queries the response was YES. Maximal size of possible extension queue 4610. Compared 781743 event pairs, 5691 based on Foata normal form. 1972/116558 useless extension candidates. Maximal degree in co-relation 337777. Up to 30802 conditions per place. [2025-02-08 01:21:43,663 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 394 selfloop transitions, 204 changer transitions 0/606 dead transitions. [2025-02-08 01:21:43,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 606 transitions, 7661 flow [2025-02-08 01:21:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:21:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:21:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2025-02-08 01:21:43,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7077922077922078 [2025-02-08 01:21:43,665 INFO L175 Difference]: Start difference. First operand has 82 places, 267 transitions, 2966 flow. Second operand 7 states and 218 transitions. [2025-02-08 01:21:43,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 606 transitions, 7661 flow [2025-02-08 01:21:50,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 606 transitions, 7661 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:21:50,793 INFO L231 Difference]: Finished difference. Result has 92 places, 367 transitions, 4709 flow [2025-02-08 01:21:50,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4709, PETRI_PLACES=92, PETRI_TRANSITIONS=367} [2025-02-08 01:21:50,793 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 44 predicate places. [2025-02-08 01:21:50,793 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 367 transitions, 4709 flow [2025-02-08 01:21:50,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2025-02-08 01:21:50,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:50,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:50,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:21:50,794 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 01:21:50,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1628685354, now seen corresponding path program 4 times [2025-02-08 01:21:50,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:50,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70742341] [2025-02-08 01:21:50,795 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:21:50,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:50,804 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-08 01:21:50,812 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 01:21:50,812 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:21:50,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:50,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:50,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70742341] [2025-02-08 01:21:50,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70742341] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:50,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:50,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:21:50,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835099571] [2025-02-08 01:21:50,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:50,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:21:50,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:50,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:21:50,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:21:50,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-02-08 01:21:50,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 367 transitions, 4709 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2025-02-08 01:21:50,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:50,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-02-08 01:21:50,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:01,337 INFO L124 PetriNetUnfolderBase]: 78551/110823 cut-off events. [2025-02-08 01:22:01,337 INFO L125 PetriNetUnfolderBase]: For 697766/698443 co-relation queries the response was YES. [2025-02-08 01:22:01,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547736 conditions, 110823 events. 78551/110823 cut-off events. For 697766/698443 co-relation queries the response was YES. Maximal size of possible extension queue 4647. Compared 804648 event pairs, 6198 based on Foata normal form. 1007/110326 useless extension candidates. Maximal degree in co-relation 355801. Up to 39884 conditions per place. [2025-02-08 01:22:02,346 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 456 selfloop transitions, 306 changer transitions 0/772 dead transitions. [2025-02-08 01:22:02,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 772 transitions, 10302 flow [2025-02-08 01:22:02,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 01:22:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 01:22:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 324 transitions. [2025-02-08 01:22:02,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6694214876033058 [2025-02-08 01:22:02,348 INFO L175 Difference]: Start difference. First operand has 92 places, 367 transitions, 4709 flow. Second operand 11 states and 324 transitions. [2025-02-08 01:22:02,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 772 transitions, 10302 flow