./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:08:36,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:08:36,896 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 01:08:36,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:08:36,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:08:36,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:08:36,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:08:36,918 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:08:36,918 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 01:08:36,918 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 01:08:36,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:08:36,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:08:36,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:08:36,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:08:36,918 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:08:36,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:08:36,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:08:36,919 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:08:36,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:08:36,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:08:36,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:08:36,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:08:36,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:08:36,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:08:36,920 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:08:36,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:08:36,920 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:08:36,921 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:08:36,921 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:08:36,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:08:36,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 01:08:36,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:08:36,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:08:36,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:08:36,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:08:36,921 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:08:36,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:08:36,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:08:36,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:08:36,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:08:36,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:08:36,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:08:36,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:08:36,922 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a [2025-03-14 01:08:37,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:08:37,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:08:37,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:08:37,160 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:08:37,160 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:08:37,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2025-03-14 01:08:38,320 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00b93e15/f7a624b65459443ab80a07c5bf5f03fe/FLAG6e5a3ad59 [2025-03-14 01:08:38,602 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:08:38,602 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2025-03-14 01:08:38,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00b93e15/f7a624b65459443ab80a07c5bf5f03fe/FLAG6e5a3ad59 [2025-03-14 01:08:38,905 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00b93e15/f7a624b65459443ab80a07c5bf5f03fe [2025-03-14 01:08:38,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:08:38,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:08:38,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:08:38,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:08:38,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:08:38,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:08:38" (1/1) ... [2025-03-14 01:08:38,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ace854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:38, skipping insertion in model container [2025-03-14 01:08:38,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:08:38" (1/1) ... [2025-03-14 01:08:38,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:08:39,046 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2435,2448] [2025-03-14 01:08:39,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:08:39,061 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:08:39,077 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2435,2448] [2025-03-14 01:08:39,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:08:39,095 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:08:39,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39 WrapperNode [2025-03-14 01:08:39,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:08:39,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:08:39,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:08:39,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:08:39,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,123 INFO L138 Inliner]: procedures = 24, calls = 19, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 84 [2025-03-14 01:08:39,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:08:39,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:08:39,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:08:39,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:08:39,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,151 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [4, 2]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 1 writes are split as follows [1, 0]. [2025-03-14 01:08:39,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,163 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:08:39,169 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:08:39,169 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:08:39,169 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:08:39,170 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (1/1) ... [2025-03-14 01:08:39,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:08:39,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:39,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-14 01:08:39,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-14 01:08:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:08:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 01:08:39,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 01:08:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 01:08:39,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 01:08:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-14 01:08:39,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-14 01:08:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 01:08:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 01:08:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 01:08:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 01:08:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-14 01:08:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:08:39,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:08:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 01:08:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 01:08:39,214 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:08:39,279 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:08:39,281 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:08:39,458 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:08:39,459 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:08:39,459 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:08:39,616 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:08:39,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:08:39 BoogieIcfgContainer [2025-03-14 01:08:39,616 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:08:39,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:08:39,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:08:39,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:08:39,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:08:38" (1/3) ... [2025-03-14 01:08:39,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e2fbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:08:39, skipping insertion in model container [2025-03-14 01:08:39,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:08:39" (2/3) ... [2025-03-14 01:08:39,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e2fbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:08:39, skipping insertion in model container [2025-03-14 01:08:39,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:08:39" (3/3) ... [2025-03-14 01:08:39,628 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2025-03-14 01:08:39,639 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:08:39,640 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-sum-array-hom.wvr.c that has 4 procedures, 24 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-14 01:08:39,640 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:08:39,685 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-14 01:08:39,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 27 transitions, 75 flow [2025-03-14 01:08:39,737 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-03-14 01:08:39,740 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:08:39,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 4/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2025-03-14 01:08:39,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 27 transitions, 75 flow [2025-03-14 01:08:39,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 23 transitions, 64 flow [2025-03-14 01:08:39,755 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:08:39,764 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;@1dca8997, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:08:39,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 01:08:39,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:08:39,772 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-03-14 01:08:39,772 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:08:39,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:39,773 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:39,773 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 1 more)] === [2025-03-14 01:08:39,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:39,778 INFO L85 PathProgramCache]: Analyzing trace with hash -82159527, now seen corresponding path program 1 times [2025-03-14 01:08:39,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:39,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167595987] [2025-03-14 01:08:39,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:39,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:39,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-14 01:08:39,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-14 01:08:39,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:39,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:40,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:40,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167595987] [2025-03-14 01:08:40,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167595987] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:08:40,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:08:40,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:08:40,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915076313] [2025-03-14 01:08:40,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:40,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:08:40,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:40,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:08:40,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:08:40,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:40,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:40,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:40,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:40,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:40,516 INFO L124 PetriNetUnfolderBase]: 387/567 cut-off events. [2025-03-14 01:08:40,516 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2025-03-14 01:08:40,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 567 events. 387/567 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1774 event pairs, 124 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2025-03-14 01:08:40,523 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 34 selfloop transitions, 4 changer transitions 1/40 dead transitions. [2025-03-14 01:08:40,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 191 flow [2025-03-14 01:08:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:08:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:08:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-03-14 01:08:40,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2025-03-14 01:08:40,535 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 64 flow. Second operand 3 states and 52 transitions. [2025-03-14 01:08:40,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 191 flow [2025-03-14 01:08:40,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 40 transitions, 169 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-14 01:08:40,544 INFO L231 Difference]: Finished difference. Result has 26 places, 26 transitions, 78 flow [2025-03-14 01:08:40,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2025-03-14 01:08:40,548 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2025-03-14 01:08:40,549 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 78 flow [2025-03-14 01:08:40,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:40,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:40,550 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:40,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:08:40,550 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 1 more)] === [2025-03-14 01:08:40,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:40,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1098352951, now seen corresponding path program 1 times [2025-03-14 01:08:40,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:40,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754857303] [2025-03-14 01:08:40,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:40,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:08:40,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:08:40,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:40,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:40,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:40,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754857303] [2025-03-14 01:08:40,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754857303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:08:40,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:08:40,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:08:40,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081081294] [2025-03-14 01:08:40,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:40,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:08:40,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:40,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:08:40,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:08:40,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:40,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:40,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:40,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:40,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:40,860 INFO L124 PetriNetUnfolderBase]: 721/1077 cut-off events. [2025-03-14 01:08:40,860 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2025-03-14 01:08:40,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 1077 events. 721/1077 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3957 event pairs, 417 based on Foata normal form. 42/1117 useless extension candidates. Maximal degree in co-relation 894. Up to 567 conditions per place. [2025-03-14 01:08:40,866 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 53 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2025-03-14 01:08:40,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 59 transitions, 290 flow [2025-03-14 01:08:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:08:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:08:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-03-14 01:08:40,870 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-03-14 01:08:40,870 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 78 flow. Second operand 5 states and 72 transitions. [2025-03-14 01:08:40,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 59 transitions, 290 flow [2025-03-14 01:08:40,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 59 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:08:40,871 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 112 flow [2025-03-14 01:08:40,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2025-03-14 01:08:40,872 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2025-03-14 01:08:40,872 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 112 flow [2025-03-14 01:08:40,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:40,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:40,872 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:40,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:08:40,873 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 1 more)] === [2025-03-14 01:08:40,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:40,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1783407115, now seen corresponding path program 1 times [2025-03-14 01:08:40,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:40,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670756259] [2025-03-14 01:08:40,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:40,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:40,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:08:40,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:08:40,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:40,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:40,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670756259] [2025-03-14 01:08:40,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670756259] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:08:40,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:08:40,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:08:40,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293176155] [2025-03-14 01:08:40,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:40,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:08:40,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:40,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:08:40,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:08:40,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:40,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:40,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:40,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:40,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:41,108 INFO L124 PetriNetUnfolderBase]: 636/969 cut-off events. [2025-03-14 01:08:41,108 INFO L125 PetriNetUnfolderBase]: For 467/467 co-relation queries the response was YES. [2025-03-14 01:08:41,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2477 conditions, 969 events. 636/969 cut-off events. For 467/467 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3602 event pairs, 391 based on Foata normal form. 42/1010 useless extension candidates. Maximal degree in co-relation 1437. Up to 567 conditions per place. [2025-03-14 01:08:41,113 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 51 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2025-03-14 01:08:41,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 57 transitions, 304 flow [2025-03-14 01:08:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:08:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:08:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-03-14 01:08:41,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-03-14 01:08:41,114 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 112 flow. Second operand 5 states and 72 transitions. [2025-03-14 01:08:41,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 57 transitions, 304 flow [2025-03-14 01:08:41,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 300 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-14 01:08:41,117 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 135 flow [2025-03-14 01:08:41,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2025-03-14 01:08:41,118 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2025-03-14 01:08:41,118 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 135 flow [2025-03-14 01:08:41,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:41,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:41,118 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:41,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:08:41,118 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 1 more)] === [2025-03-14 01:08:41,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:41,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1498791710, now seen corresponding path program 1 times [2025-03-14 01:08:41,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:41,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940764954] [2025-03-14 01:08:41,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:41,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:41,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:08:41,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:08:41,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:41,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:41,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:41,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940764954] [2025-03-14 01:08:41,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940764954] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:08:41,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:08:41,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:08:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050931004] [2025-03-14 01:08:41,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:41,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:08:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:41,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:08:41,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:08:41,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:41,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:41,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:41,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:41,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:41,334 INFO L124 PetriNetUnfolderBase]: 511/784 cut-off events. [2025-03-14 01:08:41,336 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2025-03-14 01:08:41,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 784 events. 511/784 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2779 event pairs, 324 based on Foata normal form. 27/810 useless extension candidates. Maximal degree in co-relation 1587. Up to 567 conditions per place. [2025-03-14 01:08:41,339 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 24 selfloop transitions, 2 changer transitions 24/51 dead transitions. [2025-03-14 01:08:41,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 297 flow [2025-03-14 01:08:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:08:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:08:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2025-03-14 01:08:41,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2025-03-14 01:08:41,340 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 135 flow. Second operand 5 states and 68 transitions. [2025-03-14 01:08:41,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 297 flow [2025-03-14 01:08:41,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:08:41,343 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 108 flow [2025-03-14 01:08:41,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2025-03-14 01:08:41,343 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2025-03-14 01:08:41,343 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 108 flow [2025-03-14 01:08:41,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:41,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:41,344 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] [2025-03-14 01:08:41,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:08:41,344 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 1 more)] === [2025-03-14 01:08:41,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:41,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1869990902, now seen corresponding path program 1 times [2025-03-14 01:08:41,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:41,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354667766] [2025-03-14 01:08:41,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:41,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:41,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-14 01:08:41,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:41,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:41,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:41,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:41,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354667766] [2025-03-14 01:08:41,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354667766] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:41,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907083329] [2025-03-14 01:08:41,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:41,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:41,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:41,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:41,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 01:08:41,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-14 01:08:41,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:41,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:41,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:41,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:41,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:41,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:41,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907083329] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:41,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:08:41,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-03-14 01:08:41,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794290288] [2025-03-14 01:08:41,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:41,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:08:41,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:41,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:08:41,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-14 01:08:41,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:41,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:41,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:41,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:41,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:41,875 INFO L124 PetriNetUnfolderBase]: 517/764 cut-off events. [2025-03-14 01:08:41,876 INFO L125 PetriNetUnfolderBase]: For 720/720 co-relation queries the response was YES. [2025-03-14 01:08:41,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2333 conditions, 764 events. 517/764 cut-off events. For 720/720 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2642 event pairs, 150 based on Foata normal form. 14/777 useless extension candidates. Maximal degree in co-relation 2314. Up to 379 conditions per place. [2025-03-14 01:08:41,879 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 55 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2025-03-14 01:08:41,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 394 flow [2025-03-14 01:08:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:08:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:08:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2025-03-14 01:08:41,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-14 01:08:41,881 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 108 flow. Second operand 7 states and 84 transitions. [2025-03-14 01:08:41,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 394 flow [2025-03-14 01:08:41,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 65 transitions, 322 flow, removed 34 selfloop flow, removed 8 redundant places. [2025-03-14 01:08:41,885 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 139 flow [2025-03-14 01:08:41,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=139, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2025-03-14 01:08:41,886 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2025-03-14 01:08:41,886 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 139 flow [2025-03-14 01:08:41,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:41,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:41,886 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] [2025-03-14 01:08:41,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-14 01:08:42,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:42,090 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 1 more)] === [2025-03-14 01:08:42,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:42,091 INFO L85 PathProgramCache]: Analyzing trace with hash 507308600, now seen corresponding path program 2 times [2025-03-14 01:08:42,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:42,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579600487] [2025-03-14 01:08:42,091 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:08:42,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:42,099 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:42,105 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:42,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:42,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:42,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:42,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579600487] [2025-03-14 01:08:42,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579600487] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:42,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651011022] [2025-03-14 01:08:42,188 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:08:42,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:42,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:42,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 01:08:42,237 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:42,255 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:42,256 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:42,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:42,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:42,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:42,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:42,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651011022] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:42,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:08:42,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-03-14 01:08:42,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941353882] [2025-03-14 01:08:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:42,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:08:42,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:42,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:08:42,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-14 01:08:42,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:42,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 139 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:42,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:42,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:42,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:42,528 INFO L124 PetriNetUnfolderBase]: 678/1005 cut-off events. [2025-03-14 01:08:42,529 INFO L125 PetriNetUnfolderBase]: For 979/979 co-relation queries the response was YES. [2025-03-14 01:08:42,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 1005 events. 678/1005 cut-off events. For 979/979 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3633 event pairs, 240 based on Foata normal form. 12/1016 useless extension candidates. Maximal degree in co-relation 3023. Up to 593 conditions per place. [2025-03-14 01:08:42,534 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 57 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2025-03-14 01:08:42,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 70 transitions, 435 flow [2025-03-14 01:08:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:08:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:08:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2025-03-14 01:08:42,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2025-03-14 01:08:42,535 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 139 flow. Second operand 7 states and 80 transitions. [2025-03-14 01:08:42,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 70 transitions, 435 flow [2025-03-14 01:08:42,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 400 flow, removed 10 selfloop flow, removed 3 redundant places. [2025-03-14 01:08:42,538 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 196 flow [2025-03-14 01:08:42,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2025-03-14 01:08:42,538 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2025-03-14 01:08:42,538 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 196 flow [2025-03-14 01:08:42,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:42,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:42,539 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] [2025-03-14 01:08:42,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:42,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-14 01:08:42,739 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:42,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:42,740 INFO L85 PathProgramCache]: Analyzing trace with hash -691829544, now seen corresponding path program 3 times [2025-03-14 01:08:42,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:42,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617034787] [2025-03-14 01:08:42,740 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:08:42,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:42,745 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:42,751 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:42,751 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:08:42,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:42,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617034787] [2025-03-14 01:08:42,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617034787] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239211739] [2025-03-14 01:08:42,823 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:08:42,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:42,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:42,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:42,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-14 01:08:42,862 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:42,878 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:42,878 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:08:42,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:42,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:42,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:42,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:43,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239211739] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:43,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:08:43,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2025-03-14 01:08:43,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261974391] [2025-03-14 01:08:43,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:43,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:08:43,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:43,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:08:43,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:08:43,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:43,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:43,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:43,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:43,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:43,193 INFO L124 PetriNetUnfolderBase]: 784/1167 cut-off events. [2025-03-14 01:08:43,193 INFO L125 PetriNetUnfolderBase]: For 2010/2010 co-relation queries the response was YES. [2025-03-14 01:08:43,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 1167 events. 784/1167 cut-off events. For 2010/2010 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4398 event pairs, 319 based on Foata normal form. 14/1180 useless extension candidates. Maximal degree in co-relation 4048. Up to 820 conditions per place. [2025-03-14 01:08:43,201 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 56 selfloop transitions, 17 changer transitions 0/74 dead transitions. [2025-03-14 01:08:43,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 74 transitions, 519 flow [2025-03-14 01:08:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:08:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:08:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2025-03-14 01:08:43,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2025-03-14 01:08:43,202 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 196 flow. Second operand 7 states and 82 transitions. [2025-03-14 01:08:43,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 74 transitions, 519 flow [2025-03-14 01:08:43,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 74 transitions, 478 flow, removed 12 selfloop flow, removed 3 redundant places. [2025-03-14 01:08:43,208 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 293 flow [2025-03-14 01:08:43,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2025-03-14 01:08:43,209 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2025-03-14 01:08:43,209 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 293 flow [2025-03-14 01:08:43,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:43,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:43,209 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] [2025-03-14 01:08:43,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-14 01:08:43,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:43,410 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:43,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:43,411 INFO L85 PathProgramCache]: Analyzing trace with hash -9439722, now seen corresponding path program 4 times [2025-03-14 01:08:43,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:43,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804878392] [2025-03-14 01:08:43,411 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:08:43,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:43,419 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:43,423 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 18 of 21 statements. [2025-03-14 01:08:43,424 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:08:43,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:43,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:43,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804878392] [2025-03-14 01:08:43,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804878392] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:43,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087799176] [2025-03-14 01:08:43,468 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:08:43,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:43,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:43,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:43,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-14 01:08:43,510 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:43,520 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 18 of 21 statements. [2025-03-14 01:08:43,520 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:08:43,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:43,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-14 01:08:43,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:43,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:43,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087799176] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:43,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:43,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-03-14 01:08:43,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317122203] [2025-03-14 01:08:43,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:43,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:08:43,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:43,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:08:43,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:08:43,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:43,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 293 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2025-03-14 01:08:43,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:43,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:43,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:44,074 INFO L124 PetriNetUnfolderBase]: 1176/1759 cut-off events. [2025-03-14 01:08:44,074 INFO L125 PetriNetUnfolderBase]: For 5250/5250 co-relation queries the response was YES. [2025-03-14 01:08:44,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6733 conditions, 1759 events. 1176/1759 cut-off events. For 5250/5250 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7719 event pairs, 250 based on Foata normal form. 6/1764 useless extension candidates. Maximal degree in co-relation 6705. Up to 615 conditions per place. [2025-03-14 01:08:44,088 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 156 selfloop transitions, 47 changer transitions 0/204 dead transitions. [2025-03-14 01:08:44,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 204 transitions, 1745 flow [2025-03-14 01:08:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-14 01:08:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-14 01:08:44,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 199 transitions. [2025-03-14 01:08:44,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4335511982570806 [2025-03-14 01:08:44,090 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 293 flow. Second operand 17 states and 199 transitions. [2025-03-14 01:08:44,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 204 transitions, 1745 flow [2025-03-14 01:08:44,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 204 transitions, 1587 flow, removed 26 selfloop flow, removed 4 redundant places. [2025-03-14 01:08:44,101 INFO L231 Difference]: Finished difference. Result has 73 places, 92 transitions, 870 flow [2025-03-14 01:08:44,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=870, PETRI_PLACES=73, PETRI_TRANSITIONS=92} [2025-03-14 01:08:44,102 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2025-03-14 01:08:44,102 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 92 transitions, 870 flow [2025-03-14 01:08:44,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2025-03-14 01:08:44,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:44,102 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] [2025-03-14 01:08:44,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-14 01:08:44,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:44,303 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:44,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2055715960, now seen corresponding path program 5 times [2025-03-14 01:08:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:44,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928153801] [2025-03-14 01:08:44,304 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:08:44,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:44,309 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:44,313 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:44,313 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:44,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928153801] [2025-03-14 01:08:44,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928153801] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645058179] [2025-03-14 01:08:44,405 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:08:44,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:44,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:44,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:44,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-14 01:08:44,448 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:44,464 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:44,464 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:44,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:44,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-14 01:08:44,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:44,510 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:08:44,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645058179] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:08:44,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:08:44,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2025-03-14 01:08:44,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41591585] [2025-03-14 01:08:44,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:44,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:08:44,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:44,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:08:44,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:08:44,511 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:44,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 92 transitions, 870 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:44,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:44,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:44,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:44,732 INFO L124 PetriNetUnfolderBase]: 1182/1785 cut-off events. [2025-03-14 01:08:44,732 INFO L125 PetriNetUnfolderBase]: For 10831/10831 co-relation queries the response was YES. [2025-03-14 01:08:44,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8567 conditions, 1785 events. 1182/1785 cut-off events. For 10831/10831 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7692 event pairs, 468 based on Foata normal form. 2/1786 useless extension candidates. Maximal degree in co-relation 8528. Up to 1348 conditions per place. [2025-03-14 01:08:44,742 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 85 selfloop transitions, 55 changer transitions 4/145 dead transitions. [2025-03-14 01:08:44,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 145 transitions, 1520 flow [2025-03-14 01:08:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:08:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:08:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2025-03-14 01:08:44,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2025-03-14 01:08:44,743 INFO L175 Difference]: Start difference. First operand has 73 places, 92 transitions, 870 flow. Second operand 7 states and 89 transitions. [2025-03-14 01:08:44,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 145 transitions, 1520 flow [2025-03-14 01:08:44,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 145 transitions, 1452 flow, removed 34 selfloop flow, removed 0 redundant places. [2025-03-14 01:08:44,760 INFO L231 Difference]: Finished difference. Result has 83 places, 104 transitions, 1155 flow [2025-03-14 01:08:44,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1155, PETRI_PLACES=83, PETRI_TRANSITIONS=104} [2025-03-14 01:08:44,761 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2025-03-14 01:08:44,761 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 104 transitions, 1155 flow [2025-03-14 01:08:44,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:44,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:44,761 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] [2025-03-14 01:08:44,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-14 01:08:44,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:44,961 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:44,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:44,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1934046383, now seen corresponding path program 1 times [2025-03-14 01:08:44,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:44,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432847511] [2025-03-14 01:08:44,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:44,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-14 01:08:44,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:44,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:44,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:45,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:45,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432847511] [2025-03-14 01:08:45,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432847511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:45,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218747011] [2025-03-14 01:08:45,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:45,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:45,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:45,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:45,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-14 01:08:45,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-14 01:08:45,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:45,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:45,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:45,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-14 01:08:45,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:45,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:45,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218747011] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:45,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:08:45,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2025-03-14 01:08:45,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948124777] [2025-03-14 01:08:45,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:45,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:08:45,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:45,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:08:45,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-14 01:08:45,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:45,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 104 transitions, 1155 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:45,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:45,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:45,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:45,280 INFO L124 PetriNetUnfolderBase]: 936/1403 cut-off events. [2025-03-14 01:08:45,280 INFO L125 PetriNetUnfolderBase]: For 11466/11466 co-relation queries the response was YES. [2025-03-14 01:08:45,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7416 conditions, 1403 events. 936/1403 cut-off events. For 11466/11466 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5730 event pairs, 349 based on Foata normal form. 76/1478 useless extension candidates. Maximal degree in co-relation 7372. Up to 1147 conditions per place. [2025-03-14 01:08:45,291 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 129 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2025-03-14 01:08:45,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 1779 flow [2025-03-14 01:08:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:08:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:08:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2025-03-14 01:08:45,292 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2025-03-14 01:08:45,292 INFO L175 Difference]: Start difference. First operand has 83 places, 104 transitions, 1155 flow. Second operand 5 states and 56 transitions. [2025-03-14 01:08:45,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 1779 flow [2025-03-14 01:08:45,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 135 transitions, 1525 flow, removed 71 selfloop flow, removed 3 redundant places. [2025-03-14 01:08:45,310 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 981 flow [2025-03-14 01:08:45,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=981, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2025-03-14 01:08:45,311 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2025-03-14 01:08:45,311 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 981 flow [2025-03-14 01:08:45,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:45,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:45,311 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] [2025-03-14 01:08:45,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:45,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:45,515 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:45,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash -525678388, now seen corresponding path program 6 times [2025-03-14 01:08:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:45,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900733706] [2025-03-14 01:08:45,516 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:08:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:45,523 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:45,530 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:45,530 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:08:45,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:45,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:45,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900733706] [2025-03-14 01:08:45,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900733706] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:45,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131940733] [2025-03-14 01:08:45,599 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:08:45,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:45,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:45,601 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:45,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-14 01:08:45,641 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:45,657 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:45,657 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:08:45,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:45,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:45,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:45,724 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131940733] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:45,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:08:45,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2025-03-14 01:08:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569077631] [2025-03-14 01:08:45,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:45,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:08:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:45,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:08:45,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2025-03-14 01:08:45,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:45,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 981 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:45,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:45,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:45,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:46,002 INFO L124 PetriNetUnfolderBase]: 916/1361 cut-off events. [2025-03-14 01:08:46,002 INFO L125 PetriNetUnfolderBase]: For 7412/7412 co-relation queries the response was YES. [2025-03-14 01:08:46,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6739 conditions, 1361 events. 916/1361 cut-off events. For 7412/7412 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5385 event pairs, 315 based on Foata normal form. 14/1374 useless extension candidates. Maximal degree in co-relation 6694. Up to 1016 conditions per place. [2025-03-14 01:08:46,013 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 94 selfloop transitions, 46 changer transitions 0/141 dead transitions. [2025-03-14 01:08:46,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 141 transitions, 1496 flow [2025-03-14 01:08:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 01:08:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 01:08:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-03-14 01:08:46,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-03-14 01:08:46,015 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 981 flow. Second operand 8 states and 90 transitions. [2025-03-14 01:08:46,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 141 transitions, 1496 flow [2025-03-14 01:08:46,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 141 transitions, 1456 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-14 01:08:46,030 INFO L231 Difference]: Finished difference. Result has 87 places, 108 transitions, 1125 flow [2025-03-14 01:08:46,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1125, PETRI_PLACES=87, PETRI_TRANSITIONS=108} [2025-03-14 01:08:46,031 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2025-03-14 01:08:46,031 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 108 transitions, 1125 flow [2025-03-14 01:08:46,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:46,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:46,031 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] [2025-03-14 01:08:46,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:46,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:46,232 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:46,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:46,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1466986880, now seen corresponding path program 7 times [2025-03-14 01:08:46,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:46,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919818713] [2025-03-14 01:08:46,233 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:08:46,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:46,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-14 01:08:46,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:46,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:46,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:46,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:46,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919818713] [2025-03-14 01:08:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919818713] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:46,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066514817] [2025-03-14 01:08:46,320 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:08:46,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:46,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:46,322 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:46,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-14 01:08:46,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-14 01:08:46,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:46,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:46,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:46,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:46,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:46,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:46,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066514817] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:46,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:08:46,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2025-03-14 01:08:46,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462830403] [2025-03-14 01:08:46,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:46,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:08:46,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:46,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:08:46,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-03-14 01:08:46,519 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:46,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 108 transitions, 1125 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:46,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:46,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:46,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:46,722 INFO L124 PetriNetUnfolderBase]: 896/1319 cut-off events. [2025-03-14 01:08:46,722 INFO L125 PetriNetUnfolderBase]: For 7211/7211 co-relation queries the response was YES. [2025-03-14 01:08:46,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6559 conditions, 1319 events. 896/1319 cut-off events. For 7211/7211 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5021 event pairs, 258 based on Foata normal form. 14/1332 useless extension candidates. Maximal degree in co-relation 6513. Up to 694 conditions per place. [2025-03-14 01:08:46,735 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 73 selfloop transitions, 62 changer transitions 0/136 dead transitions. [2025-03-14 01:08:46,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 136 transitions, 1520 flow [2025-03-14 01:08:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:08:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:08:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2025-03-14 01:08:46,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-14 01:08:46,736 INFO L175 Difference]: Start difference. First operand has 87 places, 108 transitions, 1125 flow. Second operand 7 states and 84 transitions. [2025-03-14 01:08:46,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 136 transitions, 1520 flow [2025-03-14 01:08:46,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 136 transitions, 1414 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-03-14 01:08:46,750 INFO L231 Difference]: Finished difference. Result has 86 places, 107 transitions, 1151 flow [2025-03-14 01:08:46,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1151, PETRI_PLACES=86, PETRI_TRANSITIONS=107} [2025-03-14 01:08:46,751 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2025-03-14 01:08:46,751 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 107 transitions, 1151 flow [2025-03-14 01:08:46,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:46,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:46,751 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] [2025-03-14 01:08:46,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:46,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-14 01:08:46,952 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:46,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:46,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1416630194, now seen corresponding path program 8 times [2025-03-14 01:08:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833737927] [2025-03-14 01:08:46,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:08:46,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:46,964 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:46,971 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:46,971 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:46,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:47,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:47,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833737927] [2025-03-14 01:08:47,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833737927] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:47,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401307477] [2025-03-14 01:08:47,036 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:08:47,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:47,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:47,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:47,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-14 01:08:47,099 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-14 01:08:47,122 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:08:47,123 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:47,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:47,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:08:47,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:47,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:47,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401307477] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:47,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:08:47,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2025-03-14 01:08:47,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645575874] [2025-03-14 01:08:47,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:08:47,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 01:08:47,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:47,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 01:08:47,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:08:47,247 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:47,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 107 transitions, 1151 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:47,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:47,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:47,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:47,438 INFO L124 PetriNetUnfolderBase]: 884/1294 cut-off events. [2025-03-14 01:08:47,438 INFO L125 PetriNetUnfolderBase]: For 7171/7171 co-relation queries the response was YES. [2025-03-14 01:08:47,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 1294 events. 884/1294 cut-off events. For 7171/7171 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4876 event pairs, 258 based on Foata normal form. 10/1303 useless extension candidates. Maximal degree in co-relation 6425. Up to 694 conditions per place. [2025-03-14 01:08:47,445 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 69 selfloop transitions, 61 changer transitions 0/131 dead transitions. [2025-03-14 01:08:47,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 131 transitions, 1513 flow [2025-03-14 01:08:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:08:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:08:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2025-03-14 01:08:47,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-03-14 01:08:47,446 INFO L175 Difference]: Start difference. First operand has 86 places, 107 transitions, 1151 flow. Second operand 7 states and 81 transitions. [2025-03-14 01:08:47,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 131 transitions, 1513 flow [2025-03-14 01:08:47,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 1418 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-03-14 01:08:47,461 INFO L231 Difference]: Finished difference. Result has 84 places, 106 transitions, 1169 flow [2025-03-14 01:08:47,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1169, PETRI_PLACES=84, PETRI_TRANSITIONS=106} [2025-03-14 01:08:47,462 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2025-03-14 01:08:47,462 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 106 transitions, 1169 flow [2025-03-14 01:08:47,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:47,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:47,462 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:47,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-14 01:08:47,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-14 01:08:47,663 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:47,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:47,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1905554956, now seen corresponding path program 1 times [2025-03-14 01:08:47,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:47,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861754397] [2025-03-14 01:08:47,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:47,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:47,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:08:47,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:08:47,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:47,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:48,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:48,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861754397] [2025-03-14 01:08:48,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861754397] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:48,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343912451] [2025-03-14 01:08:48,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:48,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:48,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:48,044 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:48,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-14 01:08:48,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:08:48,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:08:48,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:48,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:48,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-14 01:08:48,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:48,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-14 01:08:48,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:08:48,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2025-03-14 01:08:48,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:48,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:48,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343912451] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:48,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:48,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 24 [2025-03-14 01:08:48,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274746055] [2025-03-14 01:08:48,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:48,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-14 01:08:48,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:48,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-14 01:08:48,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2025-03-14 01:08:48,626 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:48,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 106 transitions, 1169 flow. Second operand has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:48,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:48,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:48,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:49,724 INFO L124 PetriNetUnfolderBase]: 1908/2773 cut-off events. [2025-03-14 01:08:49,725 INFO L125 PetriNetUnfolderBase]: For 16306/16306 co-relation queries the response was YES. [2025-03-14 01:08:49,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14527 conditions, 2773 events. 1908/2773 cut-off events. For 16306/16306 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12422 event pairs, 108 based on Foata normal form. 1/2772 useless extension candidates. Maximal degree in co-relation 13359. Up to 1596 conditions per place. [2025-03-14 01:08:49,740 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 237 selfloop transitions, 208 changer transitions 1/447 dead transitions. [2025-03-14 01:08:49,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 447 transitions, 5479 flow [2025-03-14 01:08:49,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-14 01:08:49,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-14 01:08:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 306 transitions. [2025-03-14 01:08:49,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2025-03-14 01:08:49,742 INFO L175 Difference]: Start difference. First operand has 84 places, 106 transitions, 1169 flow. Second operand 24 states and 306 transitions. [2025-03-14 01:08:49,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 447 transitions, 5479 flow [2025-03-14 01:08:49,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 447 transitions, 5079 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-14 01:08:49,781 INFO L231 Difference]: Finished difference. Result has 110 places, 311 transitions, 3960 flow [2025-03-14 01:08:49,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3960, PETRI_PLACES=110, PETRI_TRANSITIONS=311} [2025-03-14 01:08:49,782 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2025-03-14 01:08:49,782 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 311 transitions, 3960 flow [2025-03-14 01:08:49,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:49,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:49,782 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:49,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-14 01:08:49,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-14 01:08:49,986 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:49,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:49,986 INFO L85 PathProgramCache]: Analyzing trace with hash -718557574, now seen corresponding path program 2 times [2025-03-14 01:08:49,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:49,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431832829] [2025-03-14 01:08:49,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:08:49,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:49,994 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:08:50,005 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:08:50,005 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:50,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:50,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:50,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431832829] [2025-03-14 01:08:50,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431832829] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:50,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860351562] [2025-03-14 01:08:50,412 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:08:50,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:50,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:50,414 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:50,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-14 01:08:50,454 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:08:50,473 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:08:50,473 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:08:50,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:50,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-14 01:08:50,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:50,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-14 01:08:50,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-14 01:08:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:50,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:50,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860351562] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:50,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:50,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 24 [2025-03-14 01:08:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822622391] [2025-03-14 01:08:50,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:50,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-14 01:08:50,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:50,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-14 01:08:50,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2025-03-14 01:08:50,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:50,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 311 transitions, 3960 flow. Second operand has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:50,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:50,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:50,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:52,194 INFO L124 PetriNetUnfolderBase]: 2304/3326 cut-off events. [2025-03-14 01:08:52,194 INFO L125 PetriNetUnfolderBase]: For 23000/23000 co-relation queries the response was YES. [2025-03-14 01:08:52,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19210 conditions, 3326 events. 2304/3326 cut-off events. For 23000/23000 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 15158 event pairs, 237 based on Foata normal form. 2/3327 useless extension candidates. Maximal degree in co-relation 18053. Up to 2655 conditions per place. [2025-03-14 01:08:52,213 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 300 selfloop transitions, 154 changer transitions 2/457 dead transitions. [2025-03-14 01:08:52,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 457 transitions, 6040 flow [2025-03-14 01:08:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-14 01:08:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-14 01:08:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 286 transitions. [2025-03-14 01:08:52,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39231824417009603 [2025-03-14 01:08:52,216 INFO L175 Difference]: Start difference. First operand has 110 places, 311 transitions, 3960 flow. Second operand 27 states and 286 transitions. [2025-03-14 01:08:52,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 457 transitions, 6040 flow [2025-03-14 01:08:52,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 457 transitions, 5556 flow, removed 204 selfloop flow, removed 2 redundant places. [2025-03-14 01:08:52,306 INFO L231 Difference]: Finished difference. Result has 144 places, 387 transitions, 4809 flow [2025-03-14 01:08:52,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3535, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4809, PETRI_PLACES=144, PETRI_TRANSITIONS=387} [2025-03-14 01:08:52,307 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 115 predicate places. [2025-03-14 01:08:52,307 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 387 transitions, 4809 flow [2025-03-14 01:08:52,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:52,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:52,309 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:52,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-14 01:08:52,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-14 01:08:52,513 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:52,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:52,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1416857129, now seen corresponding path program 1 times [2025-03-14 01:08:52,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:52,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184634131] [2025-03-14 01:08:52,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:52,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:08:52,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:08:52,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:52,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:52,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184634131] [2025-03-14 01:08:52,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184634131] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793678106] [2025-03-14 01:08:52,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:08:52,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:52,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:52,814 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:52,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-14 01:08:52,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 01:08:52,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:08:52,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:08:52,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:52,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-14 01:08:52,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:52,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-14 01:08:53,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-14 01:08:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:53,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793678106] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:53,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 19 [2025-03-14 01:08:53,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225429600] [2025-03-14 01:08:53,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:53,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-14 01:08:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:53,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-14 01:08:53,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2025-03-14 01:08:53,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:53,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 387 transitions, 4809 flow. Second operand has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:53,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:53,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:53,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:53,637 INFO L124 PetriNetUnfolderBase]: 2655/3815 cut-off events. [2025-03-14 01:08:53,637 INFO L125 PetriNetUnfolderBase]: For 25393/25393 co-relation queries the response was YES. [2025-03-14 01:08:53,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22542 conditions, 3815 events. 2655/3815 cut-off events. For 25393/25393 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 17654 event pairs, 148 based on Foata normal form. 2/3817 useless extension candidates. Maximal degree in co-relation 22198. Up to 2480 conditions per place. [2025-03-14 01:08:53,662 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 277 selfloop transitions, 225 changer transitions 1/504 dead transitions. [2025-03-14 01:08:53,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 504 transitions, 7050 flow [2025-03-14 01:08:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:08:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:08:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2025-03-14 01:08:53,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2025-03-14 01:08:53,664 INFO L175 Difference]: Start difference. First operand has 144 places, 387 transitions, 4809 flow. Second operand 9 states and 123 transitions. [2025-03-14 01:08:53,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 504 transitions, 7050 flow [2025-03-14 01:08:53,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 504 transitions, 6775 flow, removed 134 selfloop flow, removed 3 redundant places. [2025-03-14 01:08:53,788 INFO L231 Difference]: Finished difference. Result has 152 places, 432 transitions, 5822 flow [2025-03-14 01:08:53,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4590, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5822, PETRI_PLACES=152, PETRI_TRANSITIONS=432} [2025-03-14 01:08:53,790 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2025-03-14 01:08:53,790 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 432 transitions, 5822 flow [2025-03-14 01:08:53,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:53,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:53,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:53,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-14 01:08:53,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-14 01:08:53,991 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:53,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash 998768046, now seen corresponding path program 3 times [2025-03-14 01:08:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:53,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159222361] [2025-03-14 01:08:53,992 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:08:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:53,999 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:08:54,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:08:54,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:08:54,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:54,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:54,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159222361] [2025-03-14 01:08:54,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159222361] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:54,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019356976] [2025-03-14 01:08:54,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:08:54,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:54,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:54,331 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:54,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-14 01:08:54,369 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:08:54,389 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:08:54,389 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:08:54,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:54,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-14 01:08:54,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:54,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-14 01:08:54,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:08:54,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2025-03-14 01:08:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:54,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:55,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-03-14 01:08:55,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:08:55,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2025-03-14 01:08:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:55,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019356976] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:55,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:55,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2025-03-14 01:08:55,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221835427] [2025-03-14 01:08:55,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:55,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-14 01:08:55,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:55,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-14 01:08:55,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2025-03-14 01:08:55,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:55,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 432 transitions, 5822 flow. Second operand has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:55,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:55,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:55,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:08:57,503 INFO L124 PetriNetUnfolderBase]: 2994/4308 cut-off events. [2025-03-14 01:08:57,504 INFO L125 PetriNetUnfolderBase]: For 33760/33760 co-relation queries the response was YES. [2025-03-14 01:08:57,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27266 conditions, 4308 events. 2994/4308 cut-off events. For 33760/33760 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 20499 event pairs, 319 based on Foata normal form. 2/4310 useless extension candidates. Maximal degree in co-relation 26938. Up to 3592 conditions per place. [2025-03-14 01:08:57,531 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 413 selfloop transitions, 196 changer transitions 5/615 dead transitions. [2025-03-14 01:08:57,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 615 transitions, 8753 flow [2025-03-14 01:08:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-14 01:08:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-14 01:08:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 321 transitions. [2025-03-14 01:08:57,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4099616858237548 [2025-03-14 01:08:57,535 INFO L175 Difference]: Start difference. First operand has 152 places, 432 transitions, 5822 flow. Second operand 29 states and 321 transitions. [2025-03-14 01:08:57,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 615 transitions, 8753 flow [2025-03-14 01:08:57,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 615 transitions, 8407 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-03-14 01:08:57,763 INFO L231 Difference]: Finished difference. Result has 190 places, 517 transitions, 7246 flow [2025-03-14 01:08:57,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5536, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7246, PETRI_PLACES=190, PETRI_TRANSITIONS=517} [2025-03-14 01:08:57,763 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2025-03-14 01:08:57,763 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 517 transitions, 7246 flow [2025-03-14 01:08:57,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:57,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:08:57,764 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:08:57,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-14 01:08:57,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-14 01:08:57,966 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:08:57,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:08:57,966 INFO L85 PathProgramCache]: Analyzing trace with hash -237607506, now seen corresponding path program 4 times [2025-03-14 01:08:57,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:08:57,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458259802] [2025-03-14 01:08:57,966 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:08:57,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:08:57,971 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:08:57,975 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:08:57,976 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:08:57,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:08:58,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:08:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458259802] [2025-03-14 01:08:58,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458259802] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:08:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383645130] [2025-03-14 01:08:58,132 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:08:58,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:08:58,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:08:58,134 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:08:58,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-14 01:08:58,172 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:08:58,192 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:08:58,192 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:08:58,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:08:58,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-14 01:08:58,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:08:58,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-14 01:08:58,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-14 01:08:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:58,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:08:58,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-03-14 01:08:58,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:08:58,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2025-03-14 01:08:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:08:59,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383645130] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:08:59,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:08:59,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2025-03-14 01:08:59,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069163877] [2025-03-14 01:08:59,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:08:59,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-14 01:08:59,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:08:59,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-14 01:08:59,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2025-03-14 01:08:59,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:08:59,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 517 transitions, 7246 flow. Second operand has 24 states, 24 states have (on average 6.625) internal successors, (159), 24 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:08:59,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:08:59,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:08:59,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:00,280 INFO L124 PetriNetUnfolderBase]: 3120/4507 cut-off events. [2025-03-14 01:09:00,280 INFO L125 PetriNetUnfolderBase]: For 43260/43260 co-relation queries the response was YES. [2025-03-14 01:09:00,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29932 conditions, 4507 events. 3120/4507 cut-off events. For 43260/43260 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 21767 event pairs, 372 based on Foata normal form. 3/4510 useless extension candidates. Maximal degree in co-relation 29679. Up to 3877 conditions per place. [2025-03-14 01:09:00,308 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 435 selfloop transitions, 170 changer transitions 3/609 dead transitions. [2025-03-14 01:09:00,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 609 transitions, 9144 flow [2025-03-14 01:09:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-14 01:09:00,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-14 01:09:00,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 278 transitions. [2025-03-14 01:09:00,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42901234567901236 [2025-03-14 01:09:00,309 INFO L175 Difference]: Start difference. First operand has 190 places, 517 transitions, 7246 flow. Second operand 24 states and 278 transitions. [2025-03-14 01:09:00,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 609 transitions, 9144 flow [2025-03-14 01:09:00,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 609 transitions, 8896 flow, removed 101 selfloop flow, removed 5 redundant places. [2025-03-14 01:09:00,521 INFO L231 Difference]: Finished difference. Result has 211 places, 528 transitions, 7527 flow [2025-03-14 01:09:00,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6998, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=7527, PETRI_PLACES=211, PETRI_TRANSITIONS=528} [2025-03-14 01:09:00,522 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 182 predicate places. [2025-03-14 01:09:00,522 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 528 transitions, 7527 flow [2025-03-14 01:09:00,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.625) internal successors, (159), 24 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:00,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:00,522 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:00,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:00,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:00,723 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:00,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:00,723 INFO L85 PathProgramCache]: Analyzing trace with hash -58293541, now seen corresponding path program 2 times [2025-03-14 01:09:00,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:00,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53803440] [2025-03-14 01:09:00,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:09:00,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:00,727 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:00,737 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:00,737 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:00,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:09:00,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:00,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53803440] [2025-03-14 01:09:00,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53803440] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:00,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121773468] [2025-03-14 01:09:00,999 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:09:00,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:00,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:01,001 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:01,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-14 01:09:01,039 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:01,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:01,056 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:01,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:01,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-14 01:09:01,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:01,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-14 01:09:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:01,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:01,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:09:01,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2025-03-14 01:09:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:01,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121773468] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:01,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:01,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 18 [2025-03-14 01:09:01,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282983031] [2025-03-14 01:09:01,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:01,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-14 01:09:01,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:01,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-14 01:09:01,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2025-03-14 01:09:01,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:01,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 528 transitions, 7527 flow. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:01,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:01,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:01,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:02,289 INFO L124 PetriNetUnfolderBase]: 3507/5047 cut-off events. [2025-03-14 01:09:02,289 INFO L125 PetriNetUnfolderBase]: For 48296/48296 co-relation queries the response was YES. [2025-03-14 01:09:02,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33769 conditions, 5047 events. 3507/5047 cut-off events. For 48296/48296 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 24780 event pairs, 417 based on Foata normal form. 2/5049 useless extension candidates. Maximal degree in co-relation 33565. Up to 4296 conditions per place. [2025-03-14 01:09:02,323 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 449 selfloop transitions, 177 changer transitions 1/628 dead transitions. [2025-03-14 01:09:02,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 628 transitions, 9908 flow [2025-03-14 01:09:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:09:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:09:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2025-03-14 01:09:02,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-03-14 01:09:02,325 INFO L175 Difference]: Start difference. First operand has 211 places, 528 transitions, 7527 flow. Second operand 9 states and 117 transitions. [2025-03-14 01:09:02,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 628 transitions, 9908 flow [2025-03-14 01:09:02,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 628 transitions, 9672 flow, removed 34 selfloop flow, removed 16 redundant places. [2025-03-14 01:09:02,561 INFO L231 Difference]: Finished difference. Result has 205 places, 569 transitions, 8368 flow [2025-03-14 01:09:02,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7291, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8368, PETRI_PLACES=205, PETRI_TRANSITIONS=569} [2025-03-14 01:09:02,561 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2025-03-14 01:09:02,562 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 569 transitions, 8368 flow [2025-03-14 01:09:02,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:02,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:02,562 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:02,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-14 01:09:02,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:02,762 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:02,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1133531213, now seen corresponding path program 3 times [2025-03-14 01:09:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:02,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578873561] [2025-03-14 01:09:02,763 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:09:02,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:02,766 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:02,773 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:02,773 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:09:02,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:09:02,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578873561] [2025-03-14 01:09:02,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578873561] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380109139] [2025-03-14 01:09:02,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:09:02,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:02,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:02,982 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:02,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-14 01:09:03,024 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:03,038 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:03,039 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:09:03,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:03,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-14 01:09:03,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:03,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-14 01:09:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:03,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:03,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:09:03,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2025-03-14 01:09:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:03,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380109139] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:03,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 18 [2025-03-14 01:09:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523786421] [2025-03-14 01:09:03,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:03,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-14 01:09:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:03,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-14 01:09:03,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2025-03-14 01:09:03,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:03,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 569 transitions, 8368 flow. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:03,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:03,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:03,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:04,148 INFO L124 PetriNetUnfolderBase]: 3686/5307 cut-off events. [2025-03-14 01:09:04,149 INFO L125 PetriNetUnfolderBase]: For 54769/54769 co-relation queries the response was YES. [2025-03-14 01:09:04,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36506 conditions, 5307 events. 3686/5307 cut-off events. For 54769/54769 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 26289 event pairs, 468 based on Foata normal form. 2/5309 useless extension candidates. Maximal degree in co-relation 36295. Up to 4749 conditions per place. [2025-03-14 01:09:04,191 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 479 selfloop transitions, 142 changer transitions 1/623 dead transitions. [2025-03-14 01:09:04,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 623 transitions, 10114 flow [2025-03-14 01:09:04,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:09:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:09:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2025-03-14 01:09:04,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4732510288065844 [2025-03-14 01:09:04,192 INFO L175 Difference]: Start difference. First operand has 205 places, 569 transitions, 8368 flow. Second operand 9 states and 115 transitions. [2025-03-14 01:09:04,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 623 transitions, 10114 flow [2025-03-14 01:09:04,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 623 transitions, 9731 flow, removed 46 selfloop flow, removed 6 redundant places. [2025-03-14 01:09:04,523 INFO L231 Difference]: Finished difference. Result has 209 places, 578 transitions, 8456 flow [2025-03-14 01:09:04,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7985, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8456, PETRI_PLACES=209, PETRI_TRANSITIONS=578} [2025-03-14 01:09:04,525 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2025-03-14 01:09:04,525 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 578 transitions, 8456 flow [2025-03-14 01:09:04,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:04,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:04,525 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:04,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:04,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:04,726 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:04,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1137408947, now seen corresponding path program 4 times [2025-03-14 01:09:04,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:04,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789504736] [2025-03-14 01:09:04,727 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:09:04,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:04,730 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:04,733 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:04,734 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:09:04,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:04,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789504736] [2025-03-14 01:09:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789504736] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823634070] [2025-03-14 01:09:04,850 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:09:04,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:04,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:04,852 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:04,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-14 01:09:04,890 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:04,917 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:04,917 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:09:04,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:04,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-14 01:09:04,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:05,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-14 01:09:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:05,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:05,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:09:05,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2025-03-14 01:09:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:05,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823634070] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:05,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:05,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 15 [2025-03-14 01:09:05,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451087014] [2025-03-14 01:09:05,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:05,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-14 01:09:05,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:05,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-14 01:09:05,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-03-14 01:09:05,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:05,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 578 transitions, 8456 flow. Second operand has 16 states, 16 states have (on average 7.9375) internal successors, (127), 16 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:05,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:05,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:05,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:06,134 INFO L124 PetriNetUnfolderBase]: 3941/5675 cut-off events. [2025-03-14 01:09:06,135 INFO L125 PetriNetUnfolderBase]: For 58926/58926 co-relation queries the response was YES. [2025-03-14 01:09:06,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38596 conditions, 5675 events. 3941/5675 cut-off events. For 58926/58926 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 28537 event pairs, 453 based on Foata normal form. 2/5677 useless extension candidates. Maximal degree in co-relation 38379. Up to 4965 conditions per place. [2025-03-14 01:09:06,178 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 470 selfloop transitions, 156 changer transitions 1/628 dead transitions. [2025-03-14 01:09:06,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 628 transitions, 10197 flow [2025-03-14 01:09:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:09:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:09:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2025-03-14 01:09:06,179 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5502645502645502 [2025-03-14 01:09:06,179 INFO L175 Difference]: Start difference. First operand has 209 places, 578 transitions, 8456 flow. Second operand 7 states and 104 transitions. [2025-03-14 01:09:06,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 628 transitions, 10197 flow [2025-03-14 01:09:06,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 628 transitions, 9971 flow, removed 33 selfloop flow, removed 5 redundant places. [2025-03-14 01:09:06,527 INFO L231 Difference]: Finished difference. Result has 212 places, 592 transitions, 8844 flow [2025-03-14 01:09:06,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8230, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8844, PETRI_PLACES=212, PETRI_TRANSITIONS=592} [2025-03-14 01:09:06,527 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2025-03-14 01:09:06,527 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 592 transitions, 8844 flow [2025-03-14 01:09:06,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.9375) internal successors, (127), 16 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:06,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:06,528 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:06,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:06,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:06,729 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:06,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:06,730 INFO L85 PathProgramCache]: Analyzing trace with hash 705919893, now seen corresponding path program 5 times [2025-03-14 01:09:06,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:06,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413756746] [2025-03-14 01:09:06,730 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:09:06,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:06,734 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:06,743 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:06,743 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:06,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:09:06,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:06,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413756746] [2025-03-14 01:09:06,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413756746] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:06,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751921707] [2025-03-14 01:09:06,943 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:09:06,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:06,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:06,946 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:06,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-14 01:09:06,987 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:07,007 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:07,008 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:07,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:07,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-14 01:09:07,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:07,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-14 01:09:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:07,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:07,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:09:07,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2025-03-14 01:09:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:07,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751921707] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:07,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:07,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 16 [2025-03-14 01:09:07,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333548635] [2025-03-14 01:09:07,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:07,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-14 01:09:07,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:07,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-14 01:09:07,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-03-14 01:09:07,476 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:07,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 592 transitions, 8844 flow. Second operand has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 17 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:07,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:07,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:07,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:08,429 INFO L124 PetriNetUnfolderBase]: 4082/5881 cut-off events. [2025-03-14 01:09:08,429 INFO L125 PetriNetUnfolderBase]: For 64131/64131 co-relation queries the response was YES. [2025-03-14 01:09:08,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40572 conditions, 5881 events. 4082/5881 cut-off events. For 64131/64131 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 29741 event pairs, 608 based on Foata normal form. 2/5883 useless extension candidates. Maximal degree in co-relation 40348. Up to 5323 conditions per place. [2025-03-14 01:09:08,470 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 480 selfloop transitions, 154 changer transitions 1/636 dead transitions. [2025-03-14 01:09:08,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 636 transitions, 10536 flow [2025-03-14 01:09:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:09:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:09:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2025-03-14 01:09:08,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4609053497942387 [2025-03-14 01:09:08,471 INFO L175 Difference]: Start difference. First operand has 212 places, 592 transitions, 8844 flow. Second operand 9 states and 112 transitions. [2025-03-14 01:09:08,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 636 transitions, 10536 flow [2025-03-14 01:09:08,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 636 transitions, 10248 flow, removed 58 selfloop flow, removed 2 redundant places. [2025-03-14 01:09:08,784 INFO L231 Difference]: Finished difference. Result has 220 places, 599 transitions, 9054 flow [2025-03-14 01:09:08,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8562, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9054, PETRI_PLACES=220, PETRI_TRANSITIONS=599} [2025-03-14 01:09:08,785 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2025-03-14 01:09:08,785 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 599 transitions, 9054 flow [2025-03-14 01:09:08,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 17 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:08,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:08,785 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:08,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:08,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:08,985 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:08,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:08,986 INFO L85 PathProgramCache]: Analyzing trace with hash 270654805, now seen corresponding path program 6 times [2025-03-14 01:09:08,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:08,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069526944] [2025-03-14 01:09:08,986 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:09:08,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:08,989 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:09,000 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:09,001 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:09:09,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:09:09,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:09,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069526944] [2025-03-14 01:09:09,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069526944] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:09,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008895496] [2025-03-14 01:09:09,197 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:09:09,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:09,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:09,199 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:09,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-14 01:09:09,236 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:09,252 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:09,253 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:09:09,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:09,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-14 01:09:09,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:09,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-14 01:09:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:09,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:09,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:09:09,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2025-03-14 01:09:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:09,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008895496] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:09,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:09,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 18 [2025-03-14 01:09:09,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533696362] [2025-03-14 01:09:09,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:09,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-14 01:09:09,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:09,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-14 01:09:09,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2025-03-14 01:09:09,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:09,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 599 transitions, 9054 flow. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:09,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:09,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:09,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:10,589 INFO L124 PetriNetUnfolderBase]: 4223/6087 cut-off events. [2025-03-14 01:09:10,589 INFO L125 PetriNetUnfolderBase]: For 67872/67872 co-relation queries the response was YES. [2025-03-14 01:09:10,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42180 conditions, 6087 events. 4223/6087 cut-off events. For 67872/67872 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 30993 event pairs, 653 based on Foata normal form. 2/6089 useless extension candidates. Maximal degree in co-relation 41949. Up to 5336 conditions per place. [2025-03-14 01:09:10,641 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 472 selfloop transitions, 188 changer transitions 1/662 dead transitions. [2025-03-14 01:09:10,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 662 transitions, 11057 flow [2025-03-14 01:09:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:09:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:09:10,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2025-03-14 01:09:10,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2025-03-14 01:09:10,643 INFO L175 Difference]: Start difference. First operand has 220 places, 599 transitions, 9054 flow. Second operand 9 states and 114 transitions. [2025-03-14 01:09:10,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 662 transitions, 11057 flow [2025-03-14 01:09:11,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 662 transitions, 10663 flow, removed 47 selfloop flow, removed 8 redundant places. [2025-03-14 01:09:11,129 INFO L231 Difference]: Finished difference. Result has 222 places, 612 transitions, 9357 flow [2025-03-14 01:09:11,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8660, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9357, PETRI_PLACES=222, PETRI_TRANSITIONS=612} [2025-03-14 01:09:11,130 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2025-03-14 01:09:11,130 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 612 transitions, 9357 flow [2025-03-14 01:09:11,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:11,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:11,130 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:11,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-14 01:09:11,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:11,330 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:11,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:11,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1034357160, now seen corresponding path program 5 times [2025-03-14 01:09:11,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:11,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399992221] [2025-03-14 01:09:11,331 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:09:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:11,335 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:11,339 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:11,341 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:11,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:09:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399992221] [2025-03-14 01:09:11,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399992221] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:11,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012747778] [2025-03-14 01:09:11,560 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:09:11,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:11,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:11,562 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:11,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-14 01:09:11,605 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:11,626 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:11,626 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:11,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:11,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-14 01:09:11,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:11,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-14 01:09:11,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-14 01:09:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:09:11,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:12,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-03-14 01:09:12,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:09:12,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2025-03-14 01:09:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:09:13,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012747778] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:13,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:13,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2025-03-14 01:09:13,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151974100] [2025-03-14 01:09:13,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:13,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-14 01:09:13,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:13,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-14 01:09:13,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2025-03-14 01:09:13,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:13,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 612 transitions, 9357 flow. Second operand has 24 states, 24 states have (on average 6.625) internal successors, (159), 24 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:13,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:13,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:13,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:15,131 INFO L124 PetriNetUnfolderBase]: 4699/6769 cut-off events. [2025-03-14 01:09:15,132 INFO L125 PetriNetUnfolderBase]: For 81073/81073 co-relation queries the response was YES. [2025-03-14 01:09:15,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47461 conditions, 6769 events. 4699/6769 cut-off events. For 81073/81073 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 35007 event pairs, 663 based on Foata normal form. 2/6771 useless extension candidates. Maximal degree in co-relation 47209. Up to 5556 conditions per place. [2025-03-14 01:09:15,209 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 550 selfloop transitions, 233 changer transitions 3/787 dead transitions. [2025-03-14 01:09:15,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 787 transitions, 13066 flow [2025-03-14 01:09:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-14 01:09:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-14 01:09:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 316 transitions. [2025-03-14 01:09:15,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4334705075445816 [2025-03-14 01:09:15,211 INFO L175 Difference]: Start difference. First operand has 222 places, 612 transitions, 9357 flow. Second operand 27 states and 316 transitions. [2025-03-14 01:09:15,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 787 transitions, 13066 flow [2025-03-14 01:09:15,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 787 transitions, 12531 flow, removed 105 selfloop flow, removed 6 redundant places. [2025-03-14 01:09:15,835 INFO L231 Difference]: Finished difference. Result has 248 places, 695 transitions, 10673 flow [2025-03-14 01:09:15,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8833, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=10673, PETRI_PLACES=248, PETRI_TRANSITIONS=695} [2025-03-14 01:09:15,836 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 219 predicate places. [2025-03-14 01:09:15,836 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 695 transitions, 10673 flow [2025-03-14 01:09:15,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.625) internal successors, (159), 24 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:15,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:15,837 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:15,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-14 01:09:16,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-14 01:09:16,037 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:16,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1133163020, now seen corresponding path program 6 times [2025-03-14 01:09:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199756706] [2025-03-14 01:09:16,038 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:09:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:16,042 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:16,053 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:16,054 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:09:16,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:09:16,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:16,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199756706] [2025-03-14 01:09:16,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199756706] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:16,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335230072] [2025-03-14 01:09:16,318 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:09:16,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:16,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:16,320 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:16,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-14 01:09:16,361 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-03-14 01:09:16,376 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 01:09:16,377 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:09:16,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:16,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-14 01:09:16,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:16,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-14 01:09:16,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-14 01:09:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:09:16,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:16,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-03-14 01:09:16,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:09:16,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2025-03-14 01:09:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:09:17,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335230072] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:17,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:17,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2025-03-14 01:09:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316694117] [2025-03-14 01:09:17,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:17,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-14 01:09:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:17,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-14 01:09:17,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2025-03-14 01:09:17,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:17,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 695 transitions, 10673 flow. Second operand has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:17,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:17,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:17,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:20,969 INFO L124 PetriNetUnfolderBase]: 5044/7278 cut-off events. [2025-03-14 01:09:20,969 INFO L125 PetriNetUnfolderBase]: For 93615/93615 co-relation queries the response was YES. [2025-03-14 01:09:21,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52895 conditions, 7278 events. 5044/7278 cut-off events. For 93615/93615 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 38103 event pairs, 680 based on Foata normal form. 4/7282 useless extension candidates. Maximal degree in co-relation 52623. Up to 6356 conditions per place. [2025-03-14 01:09:21,132 INFO L140 encePairwiseOnDemand]: 14/27 looper letters, 597 selfloop transitions, 278 changer transitions 11/887 dead transitions. [2025-03-14 01:09:21,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 887 transitions, 14603 flow [2025-03-14 01:09:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-03-14 01:09:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2025-03-14 01:09:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 454 transitions. [2025-03-14 01:09:21,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39104220499569337 [2025-03-14 01:09:21,134 INFO L175 Difference]: Start difference. First operand has 248 places, 695 transitions, 10673 flow. Second operand 43 states and 454 transitions. [2025-03-14 01:09:21,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 887 transitions, 14603 flow [2025-03-14 01:09:21,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 887 transitions, 13598 flow, removed 410 selfloop flow, removed 7 redundant places. [2025-03-14 01:09:21,703 INFO L231 Difference]: Finished difference. Result has 300 places, 768 transitions, 11948 flow [2025-03-14 01:09:21,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=10036, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=11948, PETRI_PLACES=300, PETRI_TRANSITIONS=768} [2025-03-14 01:09:21,704 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 271 predicate places. [2025-03-14 01:09:21,704 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 768 transitions, 11948 flow [2025-03-14 01:09:21,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:21,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:21,704 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:21,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:21,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-14 01:09:21,905 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:21,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:21,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1142766748, now seen corresponding path program 7 times [2025-03-14 01:09:21,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:21,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006106955] [2025-03-14 01:09:21,906 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:09:21,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:21,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:09:21,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:21,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:09:21,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:21,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:21,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006106955] [2025-03-14 01:09:21,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006106955] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:21,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379599101] [2025-03-14 01:09:21,954 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:09:21,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:21,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:21,957 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:21,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-14 01:09:22,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:09:22,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:22,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:09:22,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:22,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:09:22,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:22,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379599101] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:22,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:22,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-03-14 01:09:22,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677985946] [2025-03-14 01:09:22,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:22,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-14 01:09:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:22,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-14 01:09:22,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:09:22,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:22,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 768 transitions, 11948 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:22,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:22,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:22,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:23,400 INFO L124 PetriNetUnfolderBase]: 6133/9107 cut-off events. [2025-03-14 01:09:23,400 INFO L125 PetriNetUnfolderBase]: For 145083/145083 co-relation queries the response was YES. [2025-03-14 01:09:23,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65027 conditions, 9107 events. 6133/9107 cut-off events. For 145083/145083 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 52632 event pairs, 1584 based on Foata normal form. 490/9597 useless extension candidates. Maximal degree in co-relation 64597. Up to 4037 conditions per place. [2025-03-14 01:09:23,487 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 895 selfloop transitions, 74 changer transitions 10/980 dead transitions. [2025-03-14 01:09:23,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 980 transitions, 16924 flow [2025-03-14 01:09:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:09:23,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:09:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2025-03-14 01:09:23,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2025-03-14 01:09:23,488 INFO L175 Difference]: Start difference. First operand has 300 places, 768 transitions, 11948 flow. Second operand 7 states and 95 transitions. [2025-03-14 01:09:23,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 980 transitions, 16924 flow [2025-03-14 01:09:24,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 980 transitions, 16173 flow, removed 237 selfloop flow, removed 22 redundant places. [2025-03-14 01:09:24,413 INFO L231 Difference]: Finished difference. Result has 287 places, 735 transitions, 11241 flow [2025-03-14 01:09:24,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=10769, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11241, PETRI_PLACES=287, PETRI_TRANSITIONS=735} [2025-03-14 01:09:24,413 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 258 predicate places. [2025-03-14 01:09:24,414 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 735 transitions, 11241 flow [2025-03-14 01:09:24,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:24,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:24,414 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:24,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-14 01:09:24,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-14 01:09:24,614 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:24,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1525279278, now seen corresponding path program 7 times [2025-03-14 01:09:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504347075] [2025-03-14 01:09:24,619 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:09:24,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:24,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:09:24,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:24,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:09:24,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:24,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:24,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504347075] [2025-03-14 01:09:24,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504347075] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:24,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002285987] [2025-03-14 01:09:24,675 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:09:24,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:24,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:24,677 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:24,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-14 01:09:24,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:09:24,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:24,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:09:24,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:24,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-14 01:09:24,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:24,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:24,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002285987] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:24,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:24,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-03-14 01:09:24,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467897140] [2025-03-14 01:09:24,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:24,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-14 01:09:24,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:24,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-14 01:09:24,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-03-14 01:09:24,816 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:24,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 735 transitions, 11241 flow. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:24,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:24,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:24,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:26,231 INFO L124 PetriNetUnfolderBase]: 5692/8549 cut-off events. [2025-03-14 01:09:26,231 INFO L125 PetriNetUnfolderBase]: For 136210/136210 co-relation queries the response was YES. [2025-03-14 01:09:26,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63042 conditions, 8549 events. 5692/8549 cut-off events. For 136210/136210 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 49842 event pairs, 1631 based on Foata normal form. 224/8773 useless extension candidates. Maximal degree in co-relation 62767. Up to 4037 conditions per place. [2025-03-14 01:09:26,296 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 741 selfloop transitions, 136 changer transitions 59/937 dead transitions. [2025-03-14 01:09:26,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 937 transitions, 15665 flow [2025-03-14 01:09:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:09:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:09:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2025-03-14 01:09:26,297 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2025-03-14 01:09:26,297 INFO L175 Difference]: Start difference. First operand has 287 places, 735 transitions, 11241 flow. Second operand 7 states and 94 transitions. [2025-03-14 01:09:26,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 937 transitions, 15665 flow [2025-03-14 01:09:27,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 937 transitions, 15652 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-03-14 01:09:27,080 INFO L231 Difference]: Finished difference. Result has 290 places, 703 transitions, 11344 flow [2025-03-14 01:09:27,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11230, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11344, PETRI_PLACES=290, PETRI_TRANSITIONS=703} [2025-03-14 01:09:27,081 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 261 predicate places. [2025-03-14 01:09:27,081 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 703 transitions, 11344 flow [2025-03-14 01:09:27,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:27,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:27,082 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:27,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:27,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:27,282 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:27,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1165584521, now seen corresponding path program 8 times [2025-03-14 01:09:27,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:27,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958230830] [2025-03-14 01:09:27,283 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:09:27,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:27,289 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:27,292 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:27,292 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:27,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:27,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:27,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958230830] [2025-03-14 01:09:27,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958230830] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:27,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098043490] [2025-03-14 01:09:27,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:09:27,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:27,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:27,339 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:27,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-14 01:09:27,384 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:27,400 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:27,401 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:27,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:27,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:09:27,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:27,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:27,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098043490] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:27,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:27,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-03-14 01:09:27,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255867646] [2025-03-14 01:09:27,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:27,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-14 01:09:27,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:27,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-14 01:09:27,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:09:27,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:27,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 703 transitions, 11344 flow. Second operand has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:27,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:27,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:27,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:28,794 INFO L124 PetriNetUnfolderBase]: 4619/6948 cut-off events. [2025-03-14 01:09:28,795 INFO L125 PetriNetUnfolderBase]: For 144264/144264 co-relation queries the response was YES. [2025-03-14 01:09:28,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55835 conditions, 6948 events. 4619/6948 cut-off events. For 144264/144264 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 39184 event pairs, 1526 based on Foata normal form. 324/7272 useless extension candidates. Maximal degree in co-relation 55543. Up to 4178 conditions per place. [2025-03-14 01:09:28,872 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 689 selfloop transitions, 64 changer transitions 3/757 dead transitions. [2025-03-14 01:09:28,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 757 transitions, 13533 flow [2025-03-14 01:09:28,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 01:09:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 01:09:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2025-03-14 01:09:28,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2025-03-14 01:09:28,873 INFO L175 Difference]: Start difference. First operand has 290 places, 703 transitions, 11344 flow. Second operand 8 states and 101 transitions. [2025-03-14 01:09:28,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 757 transitions, 13533 flow [2025-03-14 01:09:29,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 757 transitions, 12934 flow, removed 276 selfloop flow, removed 8 redundant places. [2025-03-14 01:09:29,723 INFO L231 Difference]: Finished difference. Result has 289 places, 673 transitions, 10504 flow [2025-03-14 01:09:29,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=10271, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10504, PETRI_PLACES=289, PETRI_TRANSITIONS=673} [2025-03-14 01:09:29,723 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2025-03-14 01:09:29,724 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 673 transitions, 10504 flow [2025-03-14 01:09:29,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:29,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:29,724 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:29,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:29,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-14 01:09:29,924 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:29,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:29,925 INFO L85 PathProgramCache]: Analyzing trace with hash -277965885, now seen corresponding path program 1 times [2025-03-14 01:09:29,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:29,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693514394] [2025-03-14 01:09:29,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:09:29,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:29,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:09:29,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:29,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:09:29,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:29,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:29,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693514394] [2025-03-14 01:09:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693514394] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:29,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829226844] [2025-03-14 01:09:29,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:09:29,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:29,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:30,000 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:30,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-14 01:09:30,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:09:30,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:30,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:09:30,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:30,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-14 01:09:30,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:30,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:30,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829226844] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:30,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:30,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-03-14 01:09:30,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631810847] [2025-03-14 01:09:30,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:30,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-14 01:09:30,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:30,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-14 01:09:30,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-03-14 01:09:30,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:30,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 673 transitions, 10504 flow. Second operand has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:30,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:30,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:30,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:31,319 INFO L124 PetriNetUnfolderBase]: 4714/7125 cut-off events. [2025-03-14 01:09:31,319 INFO L125 PetriNetUnfolderBase]: For 126565/126565 co-relation queries the response was YES. [2025-03-14 01:09:31,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55620 conditions, 7125 events. 4714/7125 cut-off events. For 126565/126565 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 41035 event pairs, 1087 based on Foata normal form. 115/7240 useless extension candidates. Maximal degree in co-relation 55165. Up to 2763 conditions per place. [2025-03-14 01:09:31,392 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 686 selfloop transitions, 130 changer transitions 46/863 dead transitions. [2025-03-14 01:09:31,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 863 transitions, 14427 flow [2025-03-14 01:09:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:09:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:09:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2025-03-14 01:09:31,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2025-03-14 01:09:31,393 INFO L175 Difference]: Start difference. First operand has 289 places, 673 transitions, 10504 flow. Second operand 10 states and 134 transitions. [2025-03-14 01:09:31,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 863 transitions, 14427 flow [2025-03-14 01:09:32,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 863 transitions, 14204 flow, removed 35 selfloop flow, removed 6 redundant places. [2025-03-14 01:09:32,217 INFO L231 Difference]: Finished difference. Result has 296 places, 664 transitions, 10611 flow [2025-03-14 01:09:32,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=10291, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10611, PETRI_PLACES=296, PETRI_TRANSITIONS=664} [2025-03-14 01:09:32,218 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 267 predicate places. [2025-03-14 01:09:32,218 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 664 transitions, 10611 flow [2025-03-14 01:09:32,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:32,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:32,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:32,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:32,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-14 01:09:32,419 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:32,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:32,419 INFO L85 PathProgramCache]: Analyzing trace with hash -425137767, now seen corresponding path program 2 times [2025-03-14 01:09:32,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:32,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697924820] [2025-03-14 01:09:32,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:09:32,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:32,423 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:32,425 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:32,425 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:32,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:32,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:32,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697924820] [2025-03-14 01:09:32,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697924820] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:32,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029739302] [2025-03-14 01:09:32,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:09:32,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:32,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:32,496 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:32,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-14 01:09:32,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:32,545 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:32,545 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:32,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:32,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-14 01:09:32,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:32,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:32,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029739302] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:32,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:32,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-03-14 01:09:32,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347952198] [2025-03-14 01:09:32,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:32,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-14 01:09:32,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:32,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-14 01:09:32,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2025-03-14 01:09:32,640 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:32,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 664 transitions, 10611 flow. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:32,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:32,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:32,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:33,702 INFO L124 PetriNetUnfolderBase]: 4831/7142 cut-off events. [2025-03-14 01:09:33,702 INFO L125 PetriNetUnfolderBase]: For 148420/148420 co-relation queries the response was YES. [2025-03-14 01:09:33,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58483 conditions, 7142 events. 4831/7142 cut-off events. For 148420/148420 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 39392 event pairs, 1135 based on Foata normal form. 123/7265 useless extension candidates. Maximal degree in co-relation 58028. Up to 2763 conditions per place. [2025-03-14 01:09:33,794 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 722 selfloop transitions, 176 changer transitions 32/931 dead transitions. [2025-03-14 01:09:33,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 931 transitions, 15792 flow [2025-03-14 01:09:33,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:09:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:09:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2025-03-14 01:09:33,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4703703703703704 [2025-03-14 01:09:33,795 INFO L175 Difference]: Start difference. First operand has 296 places, 664 transitions, 10611 flow. Second operand 10 states and 127 transitions. [2025-03-14 01:09:33,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 931 transitions, 15792 flow [2025-03-14 01:09:34,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 931 transitions, 15292 flow, removed 114 selfloop flow, removed 9 redundant places. [2025-03-14 01:09:34,835 INFO L231 Difference]: Finished difference. Result has 297 places, 703 transitions, 11320 flow [2025-03-14 01:09:34,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=10260, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11320, PETRI_PLACES=297, PETRI_TRANSITIONS=703} [2025-03-14 01:09:34,836 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 268 predicate places. [2025-03-14 01:09:34,836 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 703 transitions, 11320 flow [2025-03-14 01:09:34,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:34,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:34,836 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:34,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-03-14 01:09:35,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:35,037 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:35,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:35,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1904664761, now seen corresponding path program 3 times [2025-03-14 01:09:35,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:35,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382030427] [2025-03-14 01:09:35,038 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:09:35,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:35,041 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:35,043 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:35,043 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:09:35,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:35,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:35,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382030427] [2025-03-14 01:09:35,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382030427] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:35,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788560484] [2025-03-14 01:09:35,096 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:09:35,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:35,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:35,098 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:35,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-14 01:09:35,143 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:35,157 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:35,157 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:09:35,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:35,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-14 01:09:35,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:35,212 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:35,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788560484] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:35,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:35,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-03-14 01:09:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679214164] [2025-03-14 01:09:35,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:35,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-14 01:09:35,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:35,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-14 01:09:35,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:09:35,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:35,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 703 transitions, 11320 flow. Second operand has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:35,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:35,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:35,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:36,355 INFO L124 PetriNetUnfolderBase]: 4607/6862 cut-off events. [2025-03-14 01:09:36,355 INFO L125 PetriNetUnfolderBase]: For 155306/155306 co-relation queries the response was YES. [2025-03-14 01:09:36,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57454 conditions, 6862 events. 4607/6862 cut-off events. For 155306/155306 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 38169 event pairs, 1136 based on Foata normal form. 187/7049 useless extension candidates. Maximal degree in co-relation 57000. Up to 2763 conditions per place. [2025-03-14 01:09:36,416 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 705 selfloop transitions, 144 changer transitions 36/886 dead transitions. [2025-03-14 01:09:36,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 886 transitions, 15050 flow [2025-03-14 01:09:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:09:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:09:36,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2025-03-14 01:09:36,417 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2025-03-14 01:09:36,417 INFO L175 Difference]: Start difference. First operand has 297 places, 703 transitions, 11320 flow. Second operand 10 states and 125 transitions. [2025-03-14 01:09:36,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 886 transitions, 15050 flow [2025-03-14 01:09:37,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 886 transitions, 14410 flow, removed 135 selfloop flow, removed 9 redundant places. [2025-03-14 01:09:37,312 INFO L231 Difference]: Finished difference. Result has 295 places, 658 transitions, 10378 flow [2025-03-14 01:09:37,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=10208, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10378, PETRI_PLACES=295, PETRI_TRANSITIONS=658} [2025-03-14 01:09:37,313 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 266 predicate places. [2025-03-14 01:09:37,313 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 658 transitions, 10378 flow [2025-03-14 01:09:37,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:37,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:37,313 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:37,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:37,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:37,518 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:37,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 218148413, now seen corresponding path program 4 times [2025-03-14 01:09:37,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481385066] [2025-03-14 01:09:37,519 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:09:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:37,523 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:37,524 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 23 statements. [2025-03-14 01:09:37,524 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:09:37,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:37,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:37,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481385066] [2025-03-14 01:09:37,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481385066] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:37,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840381345] [2025-03-14 01:09:37,565 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:09:37,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:37,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:37,567 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:37,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-14 01:09:37,613 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:37,624 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 23 statements. [2025-03-14 01:09:37,624 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:09:37,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:37,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:09:37,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:37,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840381345] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:37,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:37,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-03-14 01:09:37,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015861301] [2025-03-14 01:09:37,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:37,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-14 01:09:37,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:37,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-14 01:09:37,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-03-14 01:09:37,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:37,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 658 transitions, 10378 flow. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:37,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:37,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:37,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:39,129 INFO L124 PetriNetUnfolderBase]: 5483/8089 cut-off events. [2025-03-14 01:09:39,129 INFO L125 PetriNetUnfolderBase]: For 156958/156958 co-relation queries the response was YES. [2025-03-14 01:09:39,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65620 conditions, 8089 events. 5483/8089 cut-off events. For 156958/156958 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 45432 event pairs, 639 based on Foata normal form. 8/8097 useless extension candidates. Maximal degree in co-relation 65168. Up to 3678 conditions per place. [2025-03-14 01:09:39,223 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 758 selfloop transitions, 383 changer transitions 35/1177 dead transitions. [2025-03-14 01:09:39,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1177 transitions, 20486 flow [2025-03-14 01:09:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-14 01:09:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-14 01:09:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 272 transitions. [2025-03-14 01:09:39,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38746438746438744 [2025-03-14 01:09:39,225 INFO L175 Difference]: Start difference. First operand has 295 places, 658 transitions, 10378 flow. Second operand 26 states and 272 transitions. [2025-03-14 01:09:39,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1177 transitions, 20486 flow [2025-03-14 01:09:40,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1177 transitions, 19884 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-03-14 01:09:40,333 INFO L231 Difference]: Finished difference. Result has 325 places, 898 transitions, 15468 flow [2025-03-14 01:09:40,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=10100, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=15468, PETRI_PLACES=325, PETRI_TRANSITIONS=898} [2025-03-14 01:09:40,334 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 296 predicate places. [2025-03-14 01:09:40,334 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 898 transitions, 15468 flow [2025-03-14 01:09:40,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:40,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:40,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:40,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-14 01:09:40,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:40,535 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:40,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:40,535 INFO L85 PathProgramCache]: Analyzing trace with hash -482410459, now seen corresponding path program 5 times [2025-03-14 01:09:40,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:40,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693625956] [2025-03-14 01:09:40,535 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:09:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:40,539 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:40,541 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:40,541 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:40,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:40,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:40,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693625956] [2025-03-14 01:09:40,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693625956] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:40,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904765158] [2025-03-14 01:09:40,581 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:09:40,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:40,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:40,583 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:40,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-14 01:09:40,625 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:40,639 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:40,640 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:40,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:40,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-14 01:09:40,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:40,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:40,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904765158] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:40,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:40,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-03-14 01:09:40,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125129415] [2025-03-14 01:09:40,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:40,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-14 01:09:40,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:40,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-14 01:09:40,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2025-03-14 01:09:40,739 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:40,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 898 transitions, 15468 flow. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:40,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:40,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:40,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:42,228 INFO L124 PetriNetUnfolderBase]: 5218/7780 cut-off events. [2025-03-14 01:09:42,228 INFO L125 PetriNetUnfolderBase]: For 171998/171998 co-relation queries the response was YES. [2025-03-14 01:09:42,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68403 conditions, 7780 events. 5218/7780 cut-off events. For 171998/171998 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 44101 event pairs, 1075 based on Foata normal form. 143/7923 useless extension candidates. Maximal degree in co-relation 67915. Up to 3411 conditions per place. [2025-03-14 01:09:42,335 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 819 selfloop transitions, 197 changer transitions 47/1064 dead transitions. [2025-03-14 01:09:42,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1064 transitions, 20081 flow [2025-03-14 01:09:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 01:09:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 01:09:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2025-03-14 01:09:42,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2025-03-14 01:09:42,336 INFO L175 Difference]: Start difference. First operand has 325 places, 898 transitions, 15468 flow. Second operand 9 states and 113 transitions. [2025-03-14 01:09:42,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1064 transitions, 20081 flow [2025-03-14 01:09:44,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1064 transitions, 19003 flow, removed 539 selfloop flow, removed 0 redundant places. [2025-03-14 01:09:44,375 INFO L231 Difference]: Finished difference. Result has 337 places, 936 transitions, 15930 flow [2025-03-14 01:09:44,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=14402, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=711, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15930, PETRI_PLACES=337, PETRI_TRANSITIONS=936} [2025-03-14 01:09:44,376 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 308 predicate places. [2025-03-14 01:09:44,376 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 936 transitions, 15930 flow [2025-03-14 01:09:44,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:44,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:44,376 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:44,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-14 01:09:44,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:44,577 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:44,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash 770263553, now seen corresponding path program 6 times [2025-03-14 01:09:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:44,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126018258] [2025-03-14 01:09:44,577 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:09:44,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:44,581 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:44,583 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:44,583 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:09:44,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:44,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:44,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126018258] [2025-03-14 01:09:44,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126018258] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:44,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381860189] [2025-03-14 01:09:44,673 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:09:44,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:44,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:44,703 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:44,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-14 01:09:44,773 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 2 equivalence classes. [2025-03-14 01:09:44,787 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:44,788 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:09:44,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:44,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-14 01:09:44,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:44,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:44,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381860189] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:44,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:44,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-03-14 01:09:44,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553152867] [2025-03-14 01:09:44,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:44,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-14 01:09:44,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:44,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-14 01:09:44,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2025-03-14 01:09:44,911 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:44,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 936 transitions, 15930 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:44,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:44,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:44,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:46,598 INFO L124 PetriNetUnfolderBase]: 5212/7739 cut-off events. [2025-03-14 01:09:46,599 INFO L125 PetriNetUnfolderBase]: For 171160/171160 co-relation queries the response was YES. [2025-03-14 01:09:46,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68668 conditions, 7739 events. 5212/7739 cut-off events. For 171160/171160 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 43404 event pairs, 799 based on Foata normal form. 261/8000 useless extension candidates. Maximal degree in co-relation 68175. Up to 3411 conditions per place. [2025-03-14 01:09:46,679 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 792 selfloop transitions, 177 changer transitions 64/1034 dead transitions. [2025-03-14 01:09:46,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1034 transitions, 19111 flow [2025-03-14 01:09:46,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:09:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:09:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2025-03-14 01:09:46,680 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-03-14 01:09:46,680 INFO L175 Difference]: Start difference. First operand has 337 places, 936 transitions, 15930 flow. Second operand 10 states and 126 transitions. [2025-03-14 01:09:46,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1034 transitions, 19111 flow [2025-03-14 01:09:48,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1034 transitions, 18804 flow, removed 151 selfloop flow, removed 2 redundant places. [2025-03-14 01:09:48,032 INFO L231 Difference]: Finished difference. Result has 346 places, 886 transitions, 15501 flow [2025-03-14 01:09:48,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=15093, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15501, PETRI_PLACES=346, PETRI_TRANSITIONS=886} [2025-03-14 01:09:48,033 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 317 predicate places. [2025-03-14 01:09:48,033 INFO L471 AbstractCegarLoop]: Abstraction has has 346 places, 886 transitions, 15501 flow [2025-03-14 01:09:48,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:48,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:48,034 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:48,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-14 01:09:48,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-03-14 01:09:48,235 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:48,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:48,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1566227313, now seen corresponding path program 7 times [2025-03-14 01:09:48,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:48,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289569453] [2025-03-14 01:09:48,236 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:09:48,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:48,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:09:48,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:48,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:09:48,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:48,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:48,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289569453] [2025-03-14 01:09:48,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289569453] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:48,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949794374] [2025-03-14 01:09:48,317 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:09:48,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:48,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:48,321 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:48,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-14 01:09:48,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:09:48,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:48,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:09:48,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:48,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-14 01:09:48,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:48,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949794374] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:48,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:48,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-03-14 01:09:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590373396] [2025-03-14 01:09:48,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:48,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-14 01:09:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:48,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-14 01:09:48,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:09:48,499 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:48,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 886 transitions, 15501 flow. Second operand has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:48,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:48,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:48,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:50,219 INFO L124 PetriNetUnfolderBase]: 4834/7343 cut-off events. [2025-03-14 01:09:50,219 INFO L125 PetriNetUnfolderBase]: For 163353/163353 co-relation queries the response was YES. [2025-03-14 01:09:50,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65077 conditions, 7343 events. 4834/7343 cut-off events. For 163353/163353 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 42747 event pairs, 885 based on Foata normal form. 197/7540 useless extension candidates. Maximal degree in co-relation 64581. Up to 3411 conditions per place. [2025-03-14 01:09:50,330 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 720 selfloop transitions, 177 changer transitions 47/945 dead transitions. [2025-03-14 01:09:50,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 945 transitions, 17645 flow [2025-03-14 01:09:50,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:09:50,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:09:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2025-03-14 01:09:50,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2025-03-14 01:09:50,331 INFO L175 Difference]: Start difference. First operand has 346 places, 886 transitions, 15501 flow. Second operand 10 states and 123 transitions. [2025-03-14 01:09:50,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 945 transitions, 17645 flow [2025-03-14 01:09:51,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 945 transitions, 17341 flow, removed 104 selfloop flow, removed 13 redundant places. [2025-03-14 01:09:51,833 INFO L231 Difference]: Finished difference. Result has 335 places, 809 transitions, 14342 flow [2025-03-14 01:09:51,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=13736, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14342, PETRI_PLACES=335, PETRI_TRANSITIONS=809} [2025-03-14 01:09:51,834 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 306 predicate places. [2025-03-14 01:09:51,834 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 809 transitions, 14342 flow [2025-03-14 01:09:51,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:51,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:51,834 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:51,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-03-14 01:09:52,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:52,035 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:52,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:52,035 INFO L85 PathProgramCache]: Analyzing trace with hash -474926616, now seen corresponding path program 9 times [2025-03-14 01:09:52,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:52,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803292513] [2025-03-14 01:09:52,035 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:09:52,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:52,040 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-03-14 01:09:52,045 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:52,045 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-14 01:09:52,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:52,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:52,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803292513] [2025-03-14 01:09:52,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803292513] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:52,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424300240] [2025-03-14 01:09:52,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:09:52,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:52,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:52,096 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:52,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-14 01:09:52,145 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-03-14 01:09:52,161 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:09:52,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-14 01:09:52,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:52,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-14 01:09:52,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:52,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:09:52,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424300240] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:52,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:52,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-03-14 01:09:52,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795073135] [2025-03-14 01:09:52,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:52,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-14 01:09:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:52,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-14 01:09:52,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:09:52,277 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:52,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 809 transitions, 14342 flow. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:52,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:52,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:52,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:53,233 INFO L124 PetriNetUnfolderBase]: 3147/4733 cut-off events. [2025-03-14 01:09:53,234 INFO L125 PetriNetUnfolderBase]: For 100382/100382 co-relation queries the response was YES. [2025-03-14 01:09:53,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42151 conditions, 4733 events. 3147/4733 cut-off events. For 100382/100382 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 24947 event pairs, 788 based on Foata normal form. 237/4970 useless extension candidates. Maximal degree in co-relation 41997. Up to 3411 conditions per place. [2025-03-14 01:09:53,298 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 463 selfloop transitions, 3 changer transitions 225/692 dead transitions. [2025-03-14 01:09:53,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 692 transitions, 13515 flow [2025-03-14 01:09:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:09:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:09:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-03-14 01:09:53,299 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2025-03-14 01:09:53,299 INFO L175 Difference]: Start difference. First operand has 335 places, 809 transitions, 14342 flow. Second operand 7 states and 87 transitions. [2025-03-14 01:09:53,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 692 transitions, 13515 flow [2025-03-14 01:09:53,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 692 transitions, 12802 flow, removed 128 selfloop flow, removed 31 redundant places. [2025-03-14 01:09:53,956 INFO L231 Difference]: Finished difference. Result has 288 places, 467 transitions, 7236 flow [2025-03-14 01:09:53,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11326, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7236, PETRI_PLACES=288, PETRI_TRANSITIONS=467} [2025-03-14 01:09:53,957 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 259 predicate places. [2025-03-14 01:09:53,957 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 467 transitions, 7236 flow [2025-03-14 01:09:53,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:53,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:53,957 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:53,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-14 01:09:54,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:54,158 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:54,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -120039535, now seen corresponding path program 10 times [2025-03-14 01:09:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197631135] [2025-03-14 01:09:54,159 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:09:54,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:54,162 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:09:54,163 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 24 statements. [2025-03-14 01:09:54,164 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:09:54,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:54,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197631135] [2025-03-14 01:09:54,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197631135] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396434984] [2025-03-14 01:09:54,199 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:09:54,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:54,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:54,201 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:54,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-14 01:09:54,242 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:09:54,251 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 24 statements. [2025-03-14 01:09:54,251 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:09:54,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:54,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:09:54,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:54,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:54,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396434984] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:54,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:54,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-03-14 01:09:54,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60185792] [2025-03-14 01:09:54,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:54,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-14 01:09:54,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:54,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-14 01:09:54,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:09:54,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:54,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 467 transitions, 7236 flow. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:54,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:54,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:54,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:54,984 INFO L124 PetriNetUnfolderBase]: 2717/3851 cut-off events. [2025-03-14 01:09:54,984 INFO L125 PetriNetUnfolderBase]: For 78358/78358 co-relation queries the response was YES. [2025-03-14 01:09:55,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33448 conditions, 3851 events. 2717/3851 cut-off events. For 78358/78358 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 17484 event pairs, 206 based on Foata normal form. 6/3857 useless extension candidates. Maximal degree in co-relation 33349. Up to 1903 conditions per place. [2025-03-14 01:09:55,031 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 489 selfloop transitions, 145 changer transitions 0/635 dead transitions. [2025-03-14 01:09:55,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 635 transitions, 10897 flow [2025-03-14 01:09:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-14 01:09:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-14 01:09:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2025-03-14 01:09:55,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2025-03-14 01:09:55,032 INFO L175 Difference]: Start difference. First operand has 288 places, 467 transitions, 7236 flow. Second operand 12 states and 147 transitions. [2025-03-14 01:09:55,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 635 transitions, 10897 flow [2025-03-14 01:09:55,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 635 transitions, 10154 flow, removed 210 selfloop flow, removed 27 redundant places. [2025-03-14 01:09:55,411 INFO L231 Difference]: Finished difference. Result has 216 places, 514 transitions, 8042 flow [2025-03-14 01:09:55,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6764, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8042, PETRI_PLACES=216, PETRI_TRANSITIONS=514} [2025-03-14 01:09:55,411 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2025-03-14 01:09:55,411 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 514 transitions, 8042 flow [2025-03-14 01:09:55,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:55,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:55,412 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:55,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-14 01:09:55,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-03-14 01:09:55,612 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:55,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1909228170, now seen corresponding path program 8 times [2025-03-14 01:09:55,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:55,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018298257] [2025-03-14 01:09:55,613 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:09:55,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:55,617 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:09:55,619 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:09:55,619 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:55,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:55,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018298257] [2025-03-14 01:09:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018298257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174348772] [2025-03-14 01:09:55,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:09:55,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:55,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:55,686 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:55,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-14 01:09:55,734 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:09:55,750 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:09:55,750 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:09:55,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:55,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-14 01:09:55,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:55,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:55,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174348772] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:55,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:55,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-14 01:09:55,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169790443] [2025-03-14 01:09:55,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:55,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-14 01:09:55,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:55,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-14 01:09:55,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:09:55,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:55,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 514 transitions, 8042 flow. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:55,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:55,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:55,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:56,563 INFO L124 PetriNetUnfolderBase]: 2764/3930 cut-off events. [2025-03-14 01:09:56,563 INFO L125 PetriNetUnfolderBase]: For 76420/76420 co-relation queries the response was YES. [2025-03-14 01:09:56,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33274 conditions, 3930 events. 2764/3930 cut-off events. For 76420/76420 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 17914 event pairs, 365 based on Foata normal form. 32/3962 useless extension candidates. Maximal degree in co-relation 33186. Up to 2100 conditions per place. [2025-03-14 01:09:56,599 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 473 selfloop transitions, 173 changer transitions 0/647 dead transitions. [2025-03-14 01:09:56,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 647 transitions, 11022 flow [2025-03-14 01:09:56,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:09:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:09:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2025-03-14 01:09:56,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2025-03-14 01:09:56,600 INFO L175 Difference]: Start difference. First operand has 216 places, 514 transitions, 8042 flow. Second operand 10 states and 99 transitions. [2025-03-14 01:09:56,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 647 transitions, 11022 flow [2025-03-14 01:09:56,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 647 transitions, 10760 flow, removed 71 selfloop flow, removed 2 redundant places. [2025-03-14 01:09:56,956 INFO L231 Difference]: Finished difference. Result has 224 places, 525 transitions, 8345 flow [2025-03-14 01:09:56,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7850, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8345, PETRI_PLACES=224, PETRI_TRANSITIONS=525} [2025-03-14 01:09:56,957 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2025-03-14 01:09:56,957 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 525 transitions, 8345 flow [2025-03-14 01:09:56,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:56,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:56,957 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:56,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-14 01:09:57,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-14 01:09:57,158 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:57,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:57,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1034869368, now seen corresponding path program 9 times [2025-03-14 01:09:57,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:57,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826263480] [2025-03-14 01:09:57,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:09:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:57,163 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:09:57,166 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:09:57,166 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:09:57,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:09:57,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:57,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826263480] [2025-03-14 01:09:57,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826263480] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:57,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352085487] [2025-03-14 01:09:57,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:09:57,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:57,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:57,254 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:57,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-14 01:09:57,318 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:09:57,340 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:09:57,340 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 01:09:57,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:57,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-14 01:09:57,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:09:57,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:09:57,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352085487] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:57,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:57,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-14 01:09:57,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015851539] [2025-03-14 01:09:57,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:57,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-14 01:09:57,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:57,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-14 01:09:57,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:09:57,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:57,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 525 transitions, 8345 flow. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:57,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:57,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:57,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:09:58,269 INFO L124 PetriNetUnfolderBase]: 3190/4552 cut-off events. [2025-03-14 01:09:58,269 INFO L125 PetriNetUnfolderBase]: For 96675/96675 co-relation queries the response was YES. [2025-03-14 01:09:58,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39523 conditions, 4552 events. 3190/4552 cut-off events. For 96675/96675 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 21527 event pairs, 223 based on Foata normal form. 42/4594 useless extension candidates. Maximal degree in co-relation 39434. Up to 1809 conditions per place. [2025-03-14 01:09:58,336 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 538 selfloop transitions, 243 changer transitions 0/782 dead transitions. [2025-03-14 01:09:58,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 782 transitions, 13678 flow [2025-03-14 01:09:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:09:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:09:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2025-03-14 01:09:58,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2025-03-14 01:09:58,337 INFO L175 Difference]: Start difference. First operand has 224 places, 525 transitions, 8345 flow. Second operand 10 states and 109 transitions. [2025-03-14 01:09:58,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 782 transitions, 13678 flow [2025-03-14 01:09:58,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 782 transitions, 13162 flow, removed 26 selfloop flow, removed 8 redundant places. [2025-03-14 01:09:58,794 INFO L231 Difference]: Finished difference. Result has 228 places, 567 transitions, 9383 flow [2025-03-14 01:09:58,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7969, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9383, PETRI_PLACES=228, PETRI_TRANSITIONS=567} [2025-03-14 01:09:58,795 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2025-03-14 01:09:58,795 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 567 transitions, 9383 flow [2025-03-14 01:09:58,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:09:58,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:09:58,795 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:09:58,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-14 01:09:58,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-14 01:09:58,996 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:09:58,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:09:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1908401166, now seen corresponding path program 10 times [2025-03-14 01:09:58,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:09:58,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397440613] [2025-03-14 01:09:58,996 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:09:58,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:09:59,000 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:09:59,001 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 24 statements. [2025-03-14 01:09:59,001 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:09:59,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:59,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:09:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397440613] [2025-03-14 01:09:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397440613] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:09:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115674581] [2025-03-14 01:09:59,039 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:09:59,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:09:59,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:09:59,040 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:09:59,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-14 01:09:59,090 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:09:59,099 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 24 statements. [2025-03-14 01:09:59,099 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:09:59,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:09:59,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:09:59,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:09:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:59,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:09:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:09:59,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115674581] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:09:59,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:09:59,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-03-14 01:09:59,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572933216] [2025-03-14 01:09:59,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:09:59,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-14 01:09:59,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:09:59,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-14 01:09:59,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-03-14 01:09:59,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:09:59,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 567 transitions, 9383 flow. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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) [2025-03-14 01:09:59,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:09:59,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:09:59,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:10:00,495 INFO L124 PetriNetUnfolderBase]: 3621/5168 cut-off events. [2025-03-14 01:10:00,495 INFO L125 PetriNetUnfolderBase]: For 127151/127151 co-relation queries the response was YES. [2025-03-14 01:10:00,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47067 conditions, 5168 events. 3621/5168 cut-off events. For 127151/127151 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 24979 event pairs, 142 based on Foata normal form. 10/5178 useless extension candidates. Maximal degree in co-relation 46975. Up to 2071 conditions per place. [2025-03-14 01:10:00,552 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 573 selfloop transitions, 234 changer transitions 0/808 dead transitions. [2025-03-14 01:10:00,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 808 transitions, 14909 flow [2025-03-14 01:10:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-14 01:10:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-14 01:10:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 292 transitions. [2025-03-14 01:10:00,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41595441595441596 [2025-03-14 01:10:00,553 INFO L175 Difference]: Start difference. First operand has 228 places, 567 transitions, 9383 flow. Second operand 26 states and 292 transitions. [2025-03-14 01:10:00,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 808 transitions, 14909 flow [2025-03-14 01:10:01,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 808 transitions, 14413 flow, removed 108 selfloop flow, removed 6 redundant places. [2025-03-14 01:10:01,123 INFO L231 Difference]: Finished difference. Result has 264 places, 666 transitions, 11772 flow [2025-03-14 01:10:01,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9016, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=11772, PETRI_PLACES=264, PETRI_TRANSITIONS=666} [2025-03-14 01:10:01,124 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2025-03-14 01:10:01,124 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 666 transitions, 11772 flow [2025-03-14 01:10:01,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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) [2025-03-14 01:10:01,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:10:01,124 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:10:01,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-03-14 01:10:01,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-14 01:10:01,325 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:10:01,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:10:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash -834668597, now seen corresponding path program 11 times [2025-03-14 01:10:01,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:10:01,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110075554] [2025-03-14 01:10:01,326 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:10:01,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:10:01,330 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:10:01,333 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:10:01,334 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:10:01,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:10:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:10:01,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:10:01,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110075554] [2025-03-14 01:10:01,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110075554] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:10:01,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461523532] [2025-03-14 01:10:01,387 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:10:01,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:10:01,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:10:01,390 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:10:01,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-14 01:10:01,438 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:10:01,455 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:10:01,455 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:10:01,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:10:01,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:10:01,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:10:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:10:01,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:10:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:10:01,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461523532] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:10:01,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:10:01,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2025-03-14 01:10:01,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093166048] [2025-03-14 01:10:01,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:10:01,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-14 01:10:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:10:01,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-14 01:10:01,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2025-03-14 01:10:01,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:10:01,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 666 transitions, 11772 flow. Second operand has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:10:01,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:10:01,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:10:01,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:10:02,952 INFO L124 PetriNetUnfolderBase]: 4604/6535 cut-off events. [2025-03-14 01:10:02,952 INFO L125 PetriNetUnfolderBase]: For 190024/190024 co-relation queries the response was YES. [2025-03-14 01:10:03,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63342 conditions, 6535 events. 4604/6535 cut-off events. For 190024/190024 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 32163 event pairs, 150 based on Foata normal form. 28/6563 useless extension candidates. Maximal degree in co-relation 63233. Up to 2669 conditions per place. [2025-03-14 01:10:03,043 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 641 selfloop transitions, 446 changer transitions 0/1088 dead transitions. [2025-03-14 01:10:03,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1088 transitions, 21084 flow [2025-03-14 01:10:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-14 01:10:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-14 01:10:03,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 209 transitions. [2025-03-14 01:10:03,044 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.387037037037037 [2025-03-14 01:10:03,044 INFO L175 Difference]: Start difference. First operand has 264 places, 666 transitions, 11772 flow. Second operand 20 states and 209 transitions. [2025-03-14 01:10:03,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 1088 transitions, 21084 flow [2025-03-14 01:10:04,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 1088 transitions, 20347 flow, removed 323 selfloop flow, removed 1 redundant places. [2025-03-14 01:10:04,352 INFO L231 Difference]: Finished difference. Result has 291 places, 795 transitions, 14919 flow [2025-03-14 01:10:04,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11173, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=14919, PETRI_PLACES=291, PETRI_TRANSITIONS=795} [2025-03-14 01:10:04,353 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 262 predicate places. [2025-03-14 01:10:04,353 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 795 transitions, 14919 flow [2025-03-14 01:10:04,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:10:04,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:10:04,354 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:10:04,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2025-03-14 01:10:04,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:10:04,557 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:10:04,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:10:04,558 INFO L85 PathProgramCache]: Analyzing trace with hash 854274435, now seen corresponding path program 12 times [2025-03-14 01:10:04,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:10:04,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184855162] [2025-03-14 01:10:04,558 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:10:04,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:10:04,563 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:10:04,567 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:10:04,567 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:10:04,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:10:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:10:04,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:10:04,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184855162] [2025-03-14 01:10:04,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184855162] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:10:04,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212397141] [2025-03-14 01:10:04,651 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:10:04,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:10:04,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:10:04,656 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:10:04,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-14 01:10:04,702 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 2 equivalence classes. [2025-03-14 01:10:04,719 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:10:04,719 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-14 01:10:04,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:10:04,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-14 01:10:04,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:10:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:10:04,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:10:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:10:04,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212397141] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:10:04,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:10:04,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-14 01:10:04,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214762490] [2025-03-14 01:10:04,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:10:04,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-14 01:10:04,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:10:04,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-14 01:10:04,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2025-03-14 01:10:04,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:10:04,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 795 transitions, 14919 flow. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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) [2025-03-14 01:10:04,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:10:04,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:10:04,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:10:06,427 INFO L124 PetriNetUnfolderBase]: 4633/6582 cut-off events. [2025-03-14 01:10:06,427 INFO L125 PetriNetUnfolderBase]: For 212432/212432 co-relation queries the response was YES. [2025-03-14 01:10:06,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66955 conditions, 6582 events. 4633/6582 cut-off events. For 212432/212432 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 32539 event pairs, 734 based on Foata normal form. 40/6622 useless extension candidates. Maximal degree in co-relation 66837. Up to 4101 conditions per place. [2025-03-14 01:10:06,523 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 702 selfloop transitions, 249 changer transitions 0/952 dead transitions. [2025-03-14 01:10:06,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 952 transitions, 19474 flow [2025-03-14 01:10:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:10:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:10:06,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2025-03-14 01:10:06,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2025-03-14 01:10:06,525 INFO L175 Difference]: Start difference. First operand has 291 places, 795 transitions, 14919 flow. Second operand 10 states and 104 transitions. [2025-03-14 01:10:06,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 952 transitions, 19474 flow [2025-03-14 01:10:08,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 952 transitions, 18466 flow, removed 281 selfloop flow, removed 8 redundant places. [2025-03-14 01:10:08,244 INFO L231 Difference]: Finished difference. Result has 290 places, 795 transitions, 14772 flow [2025-03-14 01:10:08,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=14123, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14772, PETRI_PLACES=290, PETRI_TRANSITIONS=795} [2025-03-14 01:10:08,245 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 261 predicate places. [2025-03-14 01:10:08,245 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 795 transitions, 14772 flow [2025-03-14 01:10:08,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 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) [2025-03-14 01:10:08,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:10:08,245 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:10:08,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-03-14 01:10:08,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-03-14 01:10:08,446 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:10:08,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:10:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1010358651, now seen corresponding path program 13 times [2025-03-14 01:10:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:10:08,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595810307] [2025-03-14 01:10:08,446 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:10:08,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:10:08,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-14 01:10:08,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:10:08,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:10:08,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:10:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:10:08,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:10:08,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595810307] [2025-03-14 01:10:08,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595810307] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:10:08,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948000248] [2025-03-14 01:10:08,519 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:10:08,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:10:08,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:10:08,522 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:10:08,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-03-14 01:10:08,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-14 01:10:08,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:10:08,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:10:08,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:10:08,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-14 01:10:08,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:10:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:10:08,659 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:10:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:10:08,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948000248] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:10:08,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:10:08,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-03-14 01:10:08,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851017998] [2025-03-14 01:10:08,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:10:08,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-14 01:10:08,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:10:08,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-14 01:10:08,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2025-03-14 01:10:08,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-14 01:10:08,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 795 transitions, 14772 flow. Second operand has 21 states, 21 states have (on average 5.904761904761905) internal successors, (124), 21 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:10:08,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:10:08,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-14 01:10:08,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:10:10,583 INFO L124 PetriNetUnfolderBase]: 5706/8124 cut-off events. [2025-03-14 01:10:10,584 INFO L125 PetriNetUnfolderBase]: For 256881/256881 co-relation queries the response was YES. [2025-03-14 01:10:10,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81269 conditions, 8124 events. 5706/8124 cut-off events. For 256881/256881 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 41682 event pairs, 430 based on Foata normal form. 78/8202 useless extension candidates. Maximal degree in co-relation 81153. Up to 3183 conditions per place. [2025-03-14 01:10:10,705 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 838 selfloop transitions, 511 changer transitions 0/1350 dead transitions. [2025-03-14 01:10:10,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1350 transitions, 26851 flow [2025-03-14 01:10:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-14 01:10:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-14 01:10:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 208 transitions. [2025-03-14 01:10:10,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4279835390946502 [2025-03-14 01:10:10,706 INFO L175 Difference]: Start difference. First operand has 290 places, 795 transitions, 14772 flow. Second operand 18 states and 208 transitions. [2025-03-14 01:10:10,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 1350 transitions, 26851 flow