./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.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/parallel-parallel-sum-equiv.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 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:04:22,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:04:22,757 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 01:04:22,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:04:22,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:04:22,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:04:22,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:04:22,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:04:22,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 01:04:22,808 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 01:04:22,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:04:22,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:04:22,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:04:22,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:04:22,808 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:04:22,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:04:22,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:04:22,808 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:04:22,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:04:22,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:04:22,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:04:22,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:04:22,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:04:22,809 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:04:22,809 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:04:22,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:04:22,809 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:04:22,817 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:04:22,818 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:04:22,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:04:22,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:04:22,818 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 -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2025-03-14 01:04:23,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:04:23,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:04:23,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:04:23,318 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:04:23,318 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:04:23,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2025-03-14 01:04:24,589 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c301ce48/fe3845e1766745fba2c8e089a81d42b8/FLAG02671197b [2025-03-14 01:04:24,807 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:04:24,807 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2025-03-14 01:04:24,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c301ce48/fe3845e1766745fba2c8e089a81d42b8/FLAG02671197b [2025-03-14 01:04:24,831 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c301ce48/fe3845e1766745fba2c8e089a81d42b8 [2025-03-14 01:04:24,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:04:24,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:04:24,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:04:24,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:04:24,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:04:24,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:04:24" (1/1) ... [2025-03-14 01:04:24,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9e49b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:24, skipping insertion in model container [2025-03-14 01:04:24,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:04:24" (1/1) ... [2025-03-14 01:04:24,859 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:04:24,994 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/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2025-03-14 01:04:25,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:04:25,010 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:04:25,031 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/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2025-03-14 01:04:25,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:04:25,052 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:04:25,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25 WrapperNode [2025-03-14 01:04:25,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:04:25,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:04:25,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:04:25,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:04:25,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,086 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 245 [2025-03-14 01:04:25,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:04:25,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:04:25,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:04:25,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:04:25,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,107 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-14 01:04:25,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,112 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:04:25,122 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:04:25,122 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:04:25,122 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:04:25,123 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (1/1) ... [2025-03-14 01:04:25,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:04:25,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:25,155 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 01:04:25,157 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 01:04:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:04:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 01:04:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 01:04:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 01:04:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 01:04:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 01:04:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 01:04:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 01:04:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 01:04:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-14 01:04:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-14 01:04:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-14 01:04:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-14 01:04:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 01:04:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 01:04:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 01:04:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 01:04:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-14 01:04:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:04:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:04:25,177 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 01:04:25,282 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:04:25,283 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:04:25,607 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:04:25,608 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:04:25,608 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:04:25,908 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:04:25,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:04:25 BoogieIcfgContainer [2025-03-14 01:04:25,909 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:04:25,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:04:25,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:04:25,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:04:25,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:04:24" (1/3) ... [2025-03-14 01:04:25,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213c739c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:04:25, skipping insertion in model container [2025-03-14 01:04:25,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:04:25" (2/3) ... [2025-03-14 01:04:25,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213c739c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:04:25, skipping insertion in model container [2025-03-14 01:04:25,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:04:25" (3/3) ... [2025-03-14 01:04:25,916 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2025-03-14 01:04:25,928 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:04:25,930 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-equiv.wvr.c that has 5 procedures, 48 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-14 01:04:25,930 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:04:25,993 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2025-03-14 01:04:26,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 158 flow [2025-03-14 01:04:26,052 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2025-03-14 01:04:26,055 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-14 01:04:26,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 52 events. 9/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2025-03-14 01:04:26,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 158 flow [2025-03-14 01:04:26,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 132 flow [2025-03-14 01:04:26,064 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:04:26,073 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;@5aae3154, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:04:26,073 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-14 01:04:26,093 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:04:26,093 INFO L124 PetriNetUnfolderBase]: 9/50 cut-off events. [2025-03-14 01:04:26,094 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-14 01:04:26,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:26,096 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:26,096 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:26,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:26,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1979527559, now seen corresponding path program 1 times [2025-03-14 01:04:26,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:26,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124857727] [2025-03-14 01:04:26,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:26,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:26,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-14 01:04:26,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-14 01:04:26,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:26,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:26,315 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 01:04:26,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:26,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124857727] [2025-03-14 01:04:26,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124857727] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:26,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:26,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:04:26,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746998312] [2025-03-14 01:04:26,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:26,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-14 01:04:26,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:26,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-14 01:04:26,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-14 01:04:26,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:26,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 01:04:26,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:26,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:26,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:27,441 INFO L124 PetriNetUnfolderBase]: 8088/10948 cut-off events. [2025-03-14 01:04:27,441 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2025-03-14 01:04:27,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22845 conditions, 10948 events. 8088/10948 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 51634 event pairs, 6978 based on Foata normal form. 0/9822 useless extension candidates. Maximal degree in co-relation 22783. Up to 10923 conditions per place. [2025-03-14 01:04:27,521 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 44 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2025-03-14 01:04:27,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 214 flow [2025-03-14 01:04:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-14 01:04:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-14 01:04:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2025-03-14 01:04:27,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5163934426229508 [2025-03-14 01:04:27,534 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 132 flow. Second operand 2 states and 63 transitions. [2025-03-14 01:04:27,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 214 flow [2025-03-14 01:04:27,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-14 01:04:27,553 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 106 flow [2025-03-14 01:04:27,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2025-03-14 01:04:27,558 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2025-03-14 01:04:27,559 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 106 flow [2025-03-14 01:04:27,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 01:04:27,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:27,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:27,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:04:27,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:27,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:27,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1268123778, now seen corresponding path program 1 times [2025-03-14 01:04:27,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:27,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590890216] [2025-03-14 01:04:27,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:27,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:27,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-14 01:04:27,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-14 01:04:27,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:27,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:27,798 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 01:04:27,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:27,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590890216] [2025-03-14 01:04:27,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590890216] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:27,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:27,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:04:27,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639027970] [2025-03-14 01:04:27,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:27,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:04:27,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:27,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:04:27,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:04:27,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:27,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 01:04:27,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:27,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:27,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:29,489 INFO L124 PetriNetUnfolderBase]: 19350/26141 cut-off events. [2025-03-14 01:04:29,490 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2025-03-14 01:04:29,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52854 conditions, 26141 events. 19350/26141 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 142616 event pairs, 6122 based on Foata normal form. 1/23233 useless extension candidates. Maximal degree in co-relation 52851. Up to 11645 conditions per place. [2025-03-14 01:04:29,594 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 106 selfloop transitions, 7 changer transitions 1/118 dead transitions. [2025-03-14 01:04:29,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 118 transitions, 490 flow [2025-03-14 01:04:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:04:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:04:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2025-03-14 01:04:29,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6024590163934426 [2025-03-14 01:04:29,598 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 106 flow. Second operand 4 states and 147 transitions. [2025-03-14 01:04:29,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 118 transitions, 490 flow [2025-03-14 01:04:29,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 118 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-14 01:04:29,602 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 151 flow [2025-03-14 01:04:29,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2025-03-14 01:04:29,603 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2025-03-14 01:04:29,603 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 151 flow [2025-03-14 01:04:29,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 01:04:29,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:29,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:29,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:04:29,604 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:29,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1647210142, now seen corresponding path program 2 times [2025-03-14 01:04:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:29,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344510219] [2025-03-14 01:04:29,605 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:29,614 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 1 equivalence classes. [2025-03-14 01:04:29,640 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-14 01:04:29,641 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:04:29,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:29,728 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 01:04:29,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:29,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344510219] [2025-03-14 01:04:29,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344510219] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:29,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:29,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:04:29,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266724823] [2025-03-14 01:04:29,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:29,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:04:29,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:29,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:04:29,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:04:29,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:29,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 01:04:29,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:29,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:29,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:31,927 INFO L124 PetriNetUnfolderBase]: 30683/41318 cut-off events. [2025-03-14 01:04:31,927 INFO L125 PetriNetUnfolderBase]: For 4086/4086 co-relation queries the response was YES. [2025-03-14 01:04:31,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89848 conditions, 41318 events. 30683/41318 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 230914 event pairs, 14006 based on Foata normal form. 1/36749 useless extension candidates. Maximal degree in co-relation 89842. Up to 19516 conditions per place. [2025-03-14 01:04:32,117 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 112 selfloop transitions, 8 changer transitions 1/125 dead transitions. [2025-03-14 01:04:32,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 125 transitions, 570 flow [2025-03-14 01:04:32,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:04:32,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:04:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2025-03-14 01:04:32,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2025-03-14 01:04:32,119 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 151 flow. Second operand 4 states and 148 transitions. [2025-03-14 01:04:32,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 125 transitions, 570 flow [2025-03-14 01:04:32,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 125 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-14 01:04:32,123 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 211 flow [2025-03-14 01:04:32,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2025-03-14 01:04:32,124 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2025-03-14 01:04:32,124 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 211 flow [2025-03-14 01:04:32,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 01:04:32,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:32,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:32,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:04:32,125 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:32,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1835845418, now seen corresponding path program 1 times [2025-03-14 01:04:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:32,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275317031] [2025-03-14 01:04:32,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:32,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:32,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-14 01:04:32,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-14 01:04:32,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:32,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:32,302 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 01:04:32,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:32,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275317031] [2025-03-14 01:04:32,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275317031] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:32,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:32,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:04:32,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76353437] [2025-03-14 01:04:32,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:32,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:04:32,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:32,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:04:32,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:04:32,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:32,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:04:32,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:32,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:32,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:34,852 INFO L124 PetriNetUnfolderBase]: 42068/57206 cut-off events. [2025-03-14 01:04:34,852 INFO L125 PetriNetUnfolderBase]: For 16753/16759 co-relation queries the response was YES. [2025-03-14 01:04:34,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128512 conditions, 57206 events. 42068/57206 cut-off events. For 16753/16759 co-relation queries the response was YES. Maximal size of possible extension queue 1615. Compared 336814 event pairs, 32096 based on Foata normal form. 1244/51658 useless extension candidates. Maximal degree in co-relation 128503. Up to 41253 conditions per place. [2025-03-14 01:04:35,040 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 102 selfloop transitions, 5 changer transitions 2/113 dead transitions. [2025-03-14 01:04:35,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 113 transitions, 601 flow [2025-03-14 01:04:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:04:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:04:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2025-03-14 01:04:35,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4459016393442623 [2025-03-14 01:04:35,042 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 211 flow. Second operand 5 states and 136 transitions. [2025-03-14 01:04:35,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 113 transitions, 601 flow [2025-03-14 01:04:35,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 597 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-14 01:04:35,056 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 259 flow [2025-03-14 01:04:35,056 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2025-03-14 01:04:35,057 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2025-03-14 01:04:35,057 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 259 flow [2025-03-14 01:04:35,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:04:35,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:35,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:35,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:04:35,057 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:35,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:35,058 INFO L85 PathProgramCache]: Analyzing trace with hash 690532987, now seen corresponding path program 1 times [2025-03-14 01:04:35,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:35,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827193776] [2025-03-14 01:04:35,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:35,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:35,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-14 01:04:35,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-14 01:04:35,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:35,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:35,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:35,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827193776] [2025-03-14 01:04:35,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827193776] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:35,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:35,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:04:35,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646507998] [2025-03-14 01:04:35,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:35,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:04:35,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:35,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:04:35,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:04:35,163 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:35,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:04:35,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:35,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:35,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:37,611 INFO L124 PetriNetUnfolderBase]: 37183/50532 cut-off events. [2025-03-14 01:04:37,611 INFO L125 PetriNetUnfolderBase]: For 15437/15437 co-relation queries the response was YES. [2025-03-14 01:04:37,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115709 conditions, 50532 events. 37183/50532 cut-off events. For 15437/15437 co-relation queries the response was YES. Maximal size of possible extension queue 1390. Compared 292337 event pairs, 28958 based on Foata normal form. 382/44990 useless extension candidates. Maximal degree in co-relation 115696. Up to 41253 conditions per place. [2025-03-14 01:04:37,828 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 54 selfloop transitions, 2 changer transitions 60/120 dead transitions. [2025-03-14 01:04:37,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 634 flow [2025-03-14 01:04:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:04:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:04:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2025-03-14 01:04:37,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47540983606557374 [2025-03-14 01:04:37,833 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 259 flow. Second operand 5 states and 145 transitions. [2025-03-14 01:04:37,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 634 flow [2025-03-14 01:04:37,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 120 transitions, 630 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-14 01:04:37,848 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 235 flow [2025-03-14 01:04:37,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2025-03-14 01:04:37,849 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2025-03-14 01:04:37,850 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 235 flow [2025-03-14 01:04:37,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:04:37,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:37,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:37,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 01:04:37,851 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:37,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash -724895840, now seen corresponding path program 1 times [2025-03-14 01:04:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:37,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029135332] [2025-03-14 01:04:37,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:37,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:37,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-14 01:04:37,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-14 01:04:37,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:37,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:38,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029135332] [2025-03-14 01:04:38,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029135332] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337700484] [2025-03-14 01:04:38,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:38,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:38,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:38,015 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 01:04:38,016 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 01:04:38,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-14 01:04:38,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-14 01:04:38,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:38,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:38,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:04:38,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:38,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:38,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337700484] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:04:38,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:04:38,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-14 01:04:38,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944738735] [2025-03-14 01:04:38,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:04:38,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:38,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:38,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:38,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:38,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:38,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 235 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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 01:04:38,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:38,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:38,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:41,965 INFO L124 PetriNetUnfolderBase]: 46892/63464 cut-off events. [2025-03-14 01:04:41,965 INFO L125 PetriNetUnfolderBase]: For 28449/28449 co-relation queries the response was YES. [2025-03-14 01:04:42,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149702 conditions, 63464 events. 46892/63464 cut-off events. For 28449/28449 co-relation queries the response was YES. Maximal size of possible extension queue 1831. Compared 382267 event pairs, 24105 based on Foata normal form. 799/57077 useless extension candidates. Maximal degree in co-relation 149687. Up to 30623 conditions per place. [2025-03-14 01:04:42,269 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 159 selfloop transitions, 7 changer transitions 1/171 dead transitions. [2025-03-14 01:04:42,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 955 flow [2025-03-14 01:04:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:04:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:04:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2025-03-14 01:04:42,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46604215456674475 [2025-03-14 01:04:42,270 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 235 flow. Second operand 7 states and 199 transitions. [2025-03-14 01:04:42,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 171 transitions, 955 flow [2025-03-14 01:04:42,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 171 transitions, 929 flow, removed 11 selfloop flow, removed 5 redundant places. [2025-03-14 01:04:42,362 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 284 flow [2025-03-14 01:04:42,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2025-03-14 01:04:42,363 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2025-03-14 01:04:42,363 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 284 flow [2025-03-14 01:04:42,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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 01:04:42,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:42,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:42,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-14 01:04:42,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-14 01:04:42,564 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:42,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:42,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1032602024, now seen corresponding path program 1 times [2025-03-14 01:04:42,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:42,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498221545] [2025-03-14 01:04:42,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:42,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:42,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-14 01:04:42,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-14 01:04:42,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:42,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:42,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:42,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498221545] [2025-03-14 01:04:42,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498221545] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:42,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430027440] [2025-03-14 01:04:42,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:04:42,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:42,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:42,703 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 01:04:42,705 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 01:04:42,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-14 01:04:42,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-14 01:04:42,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:42,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:42,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:04:42,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:42,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430027440] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:04:42,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:04:42,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-14 01:04:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710864876] [2025-03-14 01:04:42,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:04:42,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:42,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:42,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:42,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:42,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:42,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 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 01:04:42,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:42,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:42,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:45,732 INFO L124 PetriNetUnfolderBase]: 36481/49836 cut-off events. [2025-03-14 01:04:45,732 INFO L125 PetriNetUnfolderBase]: For 23274/23280 co-relation queries the response was YES. [2025-03-14 01:04:45,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118928 conditions, 49836 events. 36481/49836 cut-off events. For 23274/23280 co-relation queries the response was YES. Maximal size of possible extension queue 1390. Compared 292064 event pairs, 17518 based on Foata normal form. 1460/45342 useless extension candidates. Maximal degree in co-relation 118913. Up to 21141 conditions per place. [2025-03-14 01:04:45,932 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 84 selfloop transitions, 5 changer transitions 47/140 dead transitions. [2025-03-14 01:04:45,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 140 transitions, 807 flow [2025-03-14 01:04:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:04:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:04:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2025-03-14 01:04:45,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40749414519906324 [2025-03-14 01:04:45,934 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 284 flow. Second operand 7 states and 174 transitions. [2025-03-14 01:04:45,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 140 transitions, 807 flow [2025-03-14 01:04:45,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 140 transitions, 799 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-14 01:04:45,950 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 278 flow [2025-03-14 01:04:45,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2025-03-14 01:04:45,950 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2025-03-14 01:04:45,950 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 278 flow [2025-03-14 01:04:45,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 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 01:04:45,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:45,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:45,957 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 01:04:46,151 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,SelfDestructingSolverStorable6 [2025-03-14 01:04:46,151 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:46,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:46,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2036084159, now seen corresponding path program 2 times [2025-03-14 01:04:46,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:46,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062270703] [2025-03-14 01:04:46,152 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:46,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:46,167 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-14 01:04:46,185 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-14 01:04:46,185 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:46,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:46,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:46,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062270703] [2025-03-14 01:04:46,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062270703] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:46,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189795487] [2025-03-14 01:04:46,367 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:46,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:46,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:46,370 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 01:04:46,372 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 01:04:46,429 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-14 01:04:46,457 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-14 01:04:46,457 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:46,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:46,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:04:46,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:46,553 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 01:04:46,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189795487] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:46,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:04:46,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-03-14 01:04:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247225934] [2025-03-14 01:04:46,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:46,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:04:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:46,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:04:46,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:46,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:46,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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 01:04:46,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:46,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:46,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:48,469 INFO L124 PetriNetUnfolderBase]: 23295/31570 cut-off events. [2025-03-14 01:04:48,469 INFO L125 PetriNetUnfolderBase]: For 25332/25338 co-relation queries the response was YES. [2025-03-14 01:04:48,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84389 conditions, 31570 events. 23295/31570 cut-off events. For 25332/25338 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 171175 event pairs, 11465 based on Foata normal form. 830/28805 useless extension candidates. Maximal degree in co-relation 84370. Up to 24878 conditions per place. [2025-03-14 01:04:48,595 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 76 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2025-03-14 01:04:48,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 87 transitions, 534 flow [2025-03-14 01:04:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:04:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:04:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2025-03-14 01:04:48,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3224043715846995 [2025-03-14 01:04:48,597 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 278 flow. Second operand 6 states and 118 transitions. [2025-03-14 01:04:48,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 87 transitions, 534 flow [2025-03-14 01:04:48,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 488 flow, removed 17 selfloop flow, removed 9 redundant places. [2025-03-14 01:04:48,681 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 280 flow [2025-03-14 01:04:48,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2025-03-14 01:04:48,686 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2025-03-14 01:04:48,686 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 280 flow [2025-03-14 01:04:48,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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 01:04:48,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:48,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:48,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-14 01:04:48,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:48,890 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:48,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash -317540787, now seen corresponding path program 2 times [2025-03-14 01:04:48,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:48,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903257052] [2025-03-14 01:04:48,891 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:48,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:48,916 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-14 01:04:48,938 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 40 of 42 statements. [2025-03-14 01:04:48,941 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:04:48,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:49,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:49,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903257052] [2025-03-14 01:04:49,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903257052] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:49,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:49,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:04:49,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401464892] [2025-03-14 01:04:49,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:49,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:04:49,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:49,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:04:49,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:04:49,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:49,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 01:04:49,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:49,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:49,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:51,208 INFO L124 PetriNetUnfolderBase]: 27479/37172 cut-off events. [2025-03-14 01:04:51,208 INFO L125 PetriNetUnfolderBase]: For 19112/19118 co-relation queries the response was YES. [2025-03-14 01:04:51,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95195 conditions, 37172 events. 27479/37172 cut-off events. For 19112/19118 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 203604 event pairs, 3773 based on Foata normal form. 361/33205 useless extension candidates. Maximal degree in co-relation 95180. Up to 24748 conditions per place. [2025-03-14 01:04:51,345 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 119 selfloop transitions, 7 changer transitions 1/131 dead transitions. [2025-03-14 01:04:51,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 131 transitions, 746 flow [2025-03-14 01:04:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:04:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:04:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-03-14 01:04:51,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4786885245901639 [2025-03-14 01:04:51,347 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 280 flow. Second operand 5 states and 146 transitions. [2025-03-14 01:04:51,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 131 transitions, 746 flow [2025-03-14 01:04:51,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 131 transitions, 726 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-14 01:04:51,365 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 312 flow [2025-03-14 01:04:51,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2025-03-14 01:04:51,366 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2025-03-14 01:04:51,366 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 312 flow [2025-03-14 01:04:51,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 01:04:51,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:51,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:51,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-14 01:04:51,366 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:51,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:51,367 INFO L85 PathProgramCache]: Analyzing trace with hash -801705255, now seen corresponding path program 3 times [2025-03-14 01:04:51,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:51,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054286232] [2025-03-14 01:04:51,367 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:04:51,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:51,374 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 2 equivalence classes. [2025-03-14 01:04:51,379 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 40 of 42 statements. [2025-03-14 01:04:51,379 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:04:51,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:51,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:51,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054286232] [2025-03-14 01:04:51,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054286232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:51,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:51,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:04:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066350408] [2025-03-14 01:04:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:51,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:04:51,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:51,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:04:51,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:04:51,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:51,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 01:04:51,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:51,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:51,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:53,316 INFO L124 PetriNetUnfolderBase]: 27407/37118 cut-off events. [2025-03-14 01:04:53,317 INFO L125 PetriNetUnfolderBase]: For 28621/28627 co-relation queries the response was YES. [2025-03-14 01:04:53,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97277 conditions, 37118 events. 27407/37118 cut-off events. For 28621/28627 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 205888 event pairs, 12337 based on Foata normal form. 74/32850 useless extension candidates. Maximal degree in co-relation 97260. Up to 30429 conditions per place. [2025-03-14 01:04:53,504 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 95 selfloop transitions, 8 changer transitions 14/121 dead transitions. [2025-03-14 01:04:53,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 690 flow [2025-03-14 01:04:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:04:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:04:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2025-03-14 01:04:53,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45901639344262296 [2025-03-14 01:04:53,506 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 312 flow. Second operand 5 states and 140 transitions. [2025-03-14 01:04:53,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 690 flow [2025-03-14 01:04:53,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 121 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:04:53,537 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 346 flow [2025-03-14 01:04:53,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2025-03-14 01:04:53,538 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2025-03-14 01:04:53,538 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 346 flow [2025-03-14 01:04:53,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 01:04:53,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:53,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:53,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-14 01:04:53,538 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:53,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1148038699, now seen corresponding path program 4 times [2025-03-14 01:04:53,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:53,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268477237] [2025-03-14 01:04:53,539 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:04:53,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:53,545 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-03-14 01:04:53,549 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 34 of 42 statements. [2025-03-14 01:04:53,549 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:04:53,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:53,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:53,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268477237] [2025-03-14 01:04:53,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268477237] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:53,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:53,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:04:53,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255405882] [2025-03-14 01:04:53,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:53,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:04:53,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:53,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:04:53,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:04:53,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:53,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 346 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 01:04:53,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:53,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:53,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:56,381 INFO L124 PetriNetUnfolderBase]: 33689/45522 cut-off events. [2025-03-14 01:04:56,381 INFO L125 PetriNetUnfolderBase]: For 36477/36483 co-relation queries the response was YES. [2025-03-14 01:04:56,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120638 conditions, 45522 events. 33689/45522 cut-off events. For 36477/36483 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 257637 event pairs, 8203 based on Foata normal form. 361/40341 useless extension candidates. Maximal degree in co-relation 120620. Up to 28662 conditions per place. [2025-03-14 01:04:56,652 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 129 selfloop transitions, 13 changer transitions 2/148 dead transitions. [2025-03-14 01:04:56,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 148 transitions, 894 flow [2025-03-14 01:04:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:04:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:04:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2025-03-14 01:04:56,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5049180327868853 [2025-03-14 01:04:56,653 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 346 flow. Second operand 5 states and 154 transitions. [2025-03-14 01:04:56,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 148 transitions, 894 flow [2025-03-14 01:04:56,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 148 transitions, 878 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-14 01:04:56,693 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 403 flow [2025-03-14 01:04:56,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=403, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2025-03-14 01:04:56,693 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2025-03-14 01:04:56,693 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 403 flow [2025-03-14 01:04:56,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 01:04:56,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:56,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:56,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-14 01:04:56,694 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:04:56,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:56,694 INFO L85 PathProgramCache]: Analyzing trace with hash 555774153, now seen corresponding path program 5 times [2025-03-14 01:04:56,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:56,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058579065] [2025-03-14 01:04:56,694 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:04:56,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:56,700 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-14 01:04:56,709 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-14 01:04:56,710 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:56,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:56,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:56,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058579065] [2025-03-14 01:04:56,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058579065] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:56,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964731605] [2025-03-14 01:04:56,779 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:04:56,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:56,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:56,781 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 01:04:56,783 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 01:04:56,832 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-14 01:04:56,851 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-14 01:04:56,851 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:56,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:56,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-14 01:04:56,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:56,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:56,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964731605] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:56,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:04:56,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-03-14 01:04:56,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675741462] [2025-03-14 01:04:56,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:56,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 01:04:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:56,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 01:04:56,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:56,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:04:56,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 01:04:56,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:56,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:04:56,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:59,595 INFO L124 PetriNetUnfolderBase]: 31109/42000 cut-off events. [2025-03-14 01:04:59,596 INFO L125 PetriNetUnfolderBase]: For 50403/50403 co-relation queries the response was YES. [2025-03-14 01:04:59,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115951 conditions, 42000 events. 31109/42000 cut-off events. For 50403/50403 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 234144 event pairs, 15800 based on Foata normal form. 447/37219 useless extension candidates. Maximal degree in co-relation 115931. Up to 23129 conditions per place. [2025-03-14 01:04:59,763 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 98 selfloop transitions, 12 changer transitions 1/115 dead transitions. [2025-03-14 01:04:59,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 115 transitions, 789 flow [2025-03-14 01:04:59,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:04:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:04:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2025-03-14 01:04:59,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3469945355191257 [2025-03-14 01:04:59,764 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 403 flow. Second operand 6 states and 127 transitions. [2025-03-14 01:04:59,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 115 transitions, 789 flow [2025-03-14 01:04:59,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 115 transitions, 784 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-14 01:04:59,861 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 444 flow [2025-03-14 01:04:59,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2025-03-14 01:04:59,862 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2025-03-14 01:04:59,862 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 444 flow [2025-03-14 01:04:59,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 01:04:59,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:59,862 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:59,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-14 01:05:00,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:05:00,063 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:05:00,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:05:00,063 INFO L85 PathProgramCache]: Analyzing trace with hash -635031018, now seen corresponding path program 1 times [2025-03-14 01:05:00,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:05:00,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458393979] [2025-03-14 01:05:00,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:05:00,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:05:00,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-14 01:05:00,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-14 01:05:00,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:05:00,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:05:00,667 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 01:05:00,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:05:00,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458393979] [2025-03-14 01:05:00,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458393979] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:05:00,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946451272] [2025-03-14 01:05:00,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:05:00,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:05:00,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:05:00,678 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 01:05:00,696 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 01:05:00,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-14 01:05:00,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-14 01:05:00,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:05:00,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:05:00,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-14 01:05:00,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:05:00,921 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 19 treesize of output 7 [2025-03-14 01:05:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:05:00,941 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-14 01:05:00,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946451272] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:05:00,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-14 01:05:00,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 16 [2025-03-14 01:05:00,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999475620] [2025-03-14 01:05:00,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:05:00,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-14 01:05:00,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:05:00,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-14 01:05:00,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-14 01:05:00,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2025-03-14 01:05:00,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 444 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 01:05:00,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:05:00,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2025-03-14 01:05:00,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:05:05,498 INFO L124 PetriNetUnfolderBase]: 47285/63852 cut-off events. [2025-03-14 01:05:05,498 INFO L125 PetriNetUnfolderBase]: For 86015/86015 co-relation queries the response was YES. [2025-03-14 01:05:05,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180940 conditions, 63852 events. 47285/63852 cut-off events. For 86015/86015 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 373668 event pairs, 14770 based on Foata normal form. 1/56075 useless extension candidates. Maximal degree in co-relation 180919. Up to 21223 conditions per place. [2025-03-14 01:05:05,914 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 272 selfloop transitions, 30 changer transitions 3/309 dead transitions. [2025-03-14 01:05:05,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 309 transitions, 1931 flow [2025-03-14 01:05:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 01:05:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 01:05:05,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 344 transitions. [2025-03-14 01:05:05,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5639344262295082 [2025-03-14 01:05:05,920 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 444 flow. Second operand 10 states and 344 transitions. [2025-03-14 01:05:05,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 309 transitions, 1931 flow [2025-03-14 01:05:06,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 309 transitions, 1855 flow, removed 30 selfloop flow, removed 4 redundant places. [2025-03-14 01:05:06,176 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 616 flow [2025-03-14 01:05:06,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=616, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2025-03-14 01:05:06,176 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2025-03-14 01:05:06,177 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 616 flow [2025-03-14 01:05:06,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 01:05:06,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:05:06,177 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:05:06,183 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 01:05:06,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-14 01:05:06,378 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 01:05:06,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:05:06,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2042190465, now seen corresponding path program 1 times [2025-03-14 01:05:06,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:05:06,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903890271] [2025-03-14 01:05:06,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:05:06,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:05:06,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-14 01:05:06,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-14 01:05:06,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:05:06,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat