/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 01:14:45,740 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 01:14:45,797 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-14 01:14:45,802 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 01:14:45,803 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 01:14:45,818 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 01:14:45,819 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 01:14:45,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 01:14:45,819 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 01:14:45,819 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 01:14:45,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 01:14:45,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 01:14:45,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 01:14:45,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 01:14:45,819 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 01:14:45,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 01:14:45,820 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 01:14:45,820 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:14:45,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:14:45,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 01:14:45,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 01:14:45,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 01:14:45,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 01:14:45,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 01:14:45,822 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 01:14:46,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 01:14:46,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 01:14:46,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 01:14:46,056 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 01:14:46,056 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 01:14:46,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult3.wvr.c [2025-04-14 01:14:47,298 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b24de121/b9026077b1b2436ba0bede8b55f1c38e/FLAG7d01d4fbc [2025-04-14 01:14:47,500 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 01:14:47,500 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult3.wvr.c [2025-04-14 01:14:47,506 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b24de121/b9026077b1b2436ba0bede8b55f1c38e/FLAG7d01d4fbc [2025-04-14 01:14:48,349 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b24de121/b9026077b1b2436ba0bede8b55f1c38e [2025-04-14 01:14:48,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 01:14:48,354 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 01:14:48,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 01:14:48,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 01:14:48,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 01:14:48,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3aee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48, skipping insertion in model container [2025-04-14 01:14:48,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,377 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 01:14:48,550 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult3.wvr.c[4270,4283] [2025-04-14 01:14:48,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:14:48,570 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 01:14:48,602 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult3.wvr.c[4270,4283] [2025-04-14 01:14:48,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:14:48,617 INFO L204 MainTranslator]: Completed translation [2025-04-14 01:14:48,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48 WrapperNode [2025-04-14 01:14:48,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 01:14:48,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 01:14:48,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 01:14:48,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 01:14:48,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,657 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 278 [2025-04-14 01:14:48,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 01:14:48,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 01:14:48,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 01:14:48,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 01:14:48,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,686 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-04-14 01:14:48,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,692 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 01:14:48,702 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 01:14:48,702 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 01:14:48,702 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 01:14:48,703 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (1/1) ... [2025-04-14 01:14:48,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:14:48,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:14:48,726 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) [2025-04-14 01:14:48,728 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 [2025-04-14 01:14:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 01:14:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 01:14:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 01:14:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-14 01:14:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-14 01:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 01:14:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 01:14:48,744 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 01:14:48,822 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 01:14:48,823 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 01:14:49,147 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 01:14:49,147 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 01:14:49,148 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 01:14:49,489 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 01:14:49,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:14:49 BoogieIcfgContainer [2025-04-14 01:14:49,491 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 01:14:49,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 01:14:49,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 01:14:49,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 01:14:49,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 01:14:48" (1/3) ... [2025-04-14 01:14:49,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f926bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:14:49, skipping insertion in model container [2025-04-14 01:14:49,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:14:48" (2/3) ... [2025-04-14 01:14:49,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f926bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:14:49, skipping insertion in model container [2025-04-14 01:14:49,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:14:49" (3/3) ... [2025-04-14 01:14:49,498 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2025-04-14 01:14:49,511 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 01:14:49,512 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult3.wvr.c that has 5 procedures, 44 locations, 45 edges, 1 initial locations, 6 loop locations, and 1 error locations. [2025-04-14 01:14:49,513 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 01:14:49,570 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-14 01:14:49,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 126 flow [2025-04-14 01:14:49,626 INFO L116 PetriNetUnfolderBase]: 6/45 cut-off events. [2025-04-14 01:14:49,629 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:14:49,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 45 events. 6/45 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-04-14 01:14:49,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 126 flow [2025-04-14 01:14:49,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 44 transitions, 112 flow [2025-04-14 01:14:49,642 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 01:14:49,651 INFO L340 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;@722aa16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 01:14:49,651 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-14 01:14:49,667 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 01:14:49,667 INFO L116 PetriNetUnfolderBase]: 6/43 cut-off events. [2025-04-14 01:14:49,667 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:14:49,667 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:49,669 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] [2025-04-14 01:14:49,670 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:49,673 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:49,673 INFO L85 PathProgramCache]: Analyzing trace with hash -831930433, now seen corresponding path program 1 times [2025-04-14 01:14:49,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:49,678 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050052077] [2025-04-14 01:14:49,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:14:49,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:49,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:14:49,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:14:49,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:49,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:50,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:50,003 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050052077] [2025-04-14 01:14:50,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050052077] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:50,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:50,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-14 01:14:50,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194340135] [2025-04-14 01:14:50,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:50,012 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:14:50,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:50,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:14:50,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:14:50,031 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2025-04-14 01:14:50,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:50,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:50,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2025-04-14 01:14:50,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:50,781 INFO L116 PetriNetUnfolderBase]: 5628/7731 cut-off events. [2025-04-14 01:14:50,781 INFO L117 PetriNetUnfolderBase]: For 510/510 co-relation queries the response was YES. [2025-04-14 01:14:50,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15597 conditions, 7731 events. 5628/7731 cut-off events. For 510/510 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 38979 event pairs, 1634 based on Foata normal form. 1/7561 useless extension candidates. Maximal degree in co-relation 14262. Up to 4718 conditions per place. [2025-04-14 01:14:50,841 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 55 selfloop transitions, 3 changer transitions 1/67 dead transitions. [2025-04-14 01:14:50,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 291 flow [2025-04-14 01:14:50,842 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:14:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:14:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-04-14 01:14:50,849 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2025-04-14 01:14:50,850 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 112 flow. Second operand 3 states and 96 transitions. [2025-04-14 01:14:50,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 291 flow [2025-04-14 01:14:50,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 265 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-04-14 01:14:50,866 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 115 flow [2025-04-14 01:14:50,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2025-04-14 01:14:50,870 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2025-04-14 01:14:50,870 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 115 flow [2025-04-14 01:14:50,870 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:50,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:50,870 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] [2025-04-14 01:14:50,871 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 01:14:50,871 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:50,871 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1540711415, now seen corresponding path program 1 times [2025-04-14 01:14:50,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:50,871 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660461429] [2025-04-14 01:14:50,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:14:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:50,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-14 01:14:50,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-14 01:14:50,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:50,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:51,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:51,094 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660461429] [2025-04-14 01:14:51,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660461429] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:51,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:51,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 01:14:51,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041896705] [2025-04-14 01:14:51,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:51,095 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:14:51,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:51,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:14:51,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:14:51,095 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2025-04-14 01:14:51,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:51,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:51,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2025-04-14 01:14:51,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:51,730 INFO L116 PetriNetUnfolderBase]: 7550/10533 cut-off events. [2025-04-14 01:14:51,730 INFO L117 PetriNetUnfolderBase]: For 1381/1381 co-relation queries the response was YES. [2025-04-14 01:14:51,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22189 conditions, 10533 events. 7550/10533 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 58131 event pairs, 2860 based on Foata normal form. 296/10709 useless extension candidates. Maximal degree in co-relation 8939. Up to 6208 conditions per place. [2025-04-14 01:14:51,778 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 63 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2025-04-14 01:14:51,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 73 transitions, 313 flow [2025-04-14 01:14:51,779 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:14:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:14:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2025-04-14 01:14:51,781 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2025-04-14 01:14:51,781 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 115 flow. Second operand 3 states and 99 transitions. [2025-04-14 01:14:51,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 73 transitions, 313 flow [2025-04-14 01:14:51,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:14:51,783 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 126 flow [2025-04-14 01:14:51,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2025-04-14 01:14:51,783 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2025-04-14 01:14:51,783 INFO L485 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 126 flow [2025-04-14 01:14:51,785 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:51,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:51,787 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] [2025-04-14 01:14:51,787 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 01:14:51,788 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:51,788 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:51,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1539893365, now seen corresponding path program 1 times [2025-04-14 01:14:51,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:51,788 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560637944] [2025-04-14 01:14:51,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:14:51,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:51,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-14 01:14:51,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-14 01:14:51,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:51,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:51,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:51,905 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560637944] [2025-04-14 01:14:51,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560637944] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:51,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:51,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 01:14:51,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607457738] [2025-04-14 01:14:51,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:51,905 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:14:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:51,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:14:51,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:14:51,906 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2025-04-14 01:14:51,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:51,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:51,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2025-04-14 01:14:51,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:52,873 INFO L116 PetriNetUnfolderBase]: 9986/14095 cut-off events. [2025-04-14 01:14:52,873 INFO L117 PetriNetUnfolderBase]: For 3481/3489 co-relation queries the response was YES. [2025-04-14 01:14:52,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30477 conditions, 14095 events. 9986/14095 cut-off events. For 3481/3489 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 80788 event pairs, 3689 based on Foata normal form. 241/14244 useless extension candidates. Maximal degree in co-relation 14973. Up to 8300 conditions per place. [2025-04-14 01:14:52,936 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 63 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2025-04-14 01:14:52,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 329 flow [2025-04-14 01:14:52,936 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:14:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:14:52,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-04-14 01:14:52,940 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6598639455782312 [2025-04-14 01:14:52,940 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 126 flow. Second operand 3 states and 97 transitions. [2025-04-14 01:14:52,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 329 flow [2025-04-14 01:14:52,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:14:52,943 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 138 flow [2025-04-14 01:14:52,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2025-04-14 01:14:52,944 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2025-04-14 01:14:52,944 INFO L485 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 138 flow [2025-04-14 01:14:52,944 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:52,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:52,944 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] [2025-04-14 01:14:52,944 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 01:14:52,944 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:52,945 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:52,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1792404066, now seen corresponding path program 1 times [2025-04-14 01:14:52,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:52,945 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740193721] [2025-04-14 01:14:52,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:14:52,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:52,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-14 01:14:52,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:14:52,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:52,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:53,122 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740193721] [2025-04-14 01:14:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740193721] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:53,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:53,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:14:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121094591] [2025-04-14 01:14:53,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:53,123 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 01:14:53,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:53,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 01:14:53,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 01:14:53,123 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2025-04-14 01:14:53,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2025-04-14 01:14:53,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:53,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2025-04-14 01:14:53,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:53,977 INFO L116 PetriNetUnfolderBase]: 12499/17798 cut-off events. [2025-04-14 01:14:53,977 INFO L117 PetriNetUnfolderBase]: For 5382/5444 co-relation queries the response was YES. [2025-04-14 01:14:54,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39801 conditions, 17798 events. 12499/17798 cut-off events. For 5382/5444 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 106571 event pairs, 10539 based on Foata normal form. 281/18023 useless extension candidates. Maximal degree in co-relation 20730. Up to 13295 conditions per place. [2025-04-14 01:14:54,055 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 69 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2025-04-14 01:14:54,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 377 flow [2025-04-14 01:14:54,055 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 01:14:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 01:14:54,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2025-04-14 01:14:54,057 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2025-04-14 01:14:54,058 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 138 flow. Second operand 5 states and 129 transitions. [2025-04-14 01:14:54,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 377 flow [2025-04-14 01:14:54,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:14:54,060 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 172 flow [2025-04-14 01:14:54,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2025-04-14 01:14:54,061 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2025-04-14 01:14:54,061 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 172 flow [2025-04-14 01:14:54,061 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2025-04-14 01:14:54,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:54,061 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] [2025-04-14 01:14:54,061 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 01:14:54,061 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:54,062 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:54,062 INFO L85 PathProgramCache]: Analyzing trace with hash -335451920, now seen corresponding path program 1 times [2025-04-14 01:14:54,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:54,062 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458742049] [2025-04-14 01:14:54,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:14:54,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:54,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-14 01:14:54,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:14:54,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:54,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:14:54,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:54,200 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458742049] [2025-04-14 01:14:54,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458742049] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:54,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:54,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 01:14:54,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264788909] [2025-04-14 01:14:54,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:54,201 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 01:14:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:54,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 01:14:54,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 01:14:54,201 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2025-04-14 01:14:54,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2025-04-14 01:14:54,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:54,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2025-04-14 01:14:54,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:55,557 INFO L116 PetriNetUnfolderBase]: 15695/22569 cut-off events. [2025-04-14 01:14:55,557 INFO L117 PetriNetUnfolderBase]: For 7194/7248 co-relation queries the response was YES. [2025-04-14 01:14:55,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50512 conditions, 22569 events. 15695/22569 cut-off events. For 7194/7248 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 142463 event pairs, 13476 based on Foata normal form. 411/22889 useless extension candidates. Maximal degree in co-relation 40790. Up to 16804 conditions per place. [2025-04-14 01:14:55,793 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 68 selfloop transitions, 5 changer transitions 1/82 dead transitions. [2025-04-14 01:14:55,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 82 transitions, 408 flow [2025-04-14 01:14:55,797 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 01:14:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 01:14:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2025-04-14 01:14:55,797 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.576530612244898 [2025-04-14 01:14:55,798 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 172 flow. Second operand 4 states and 113 transitions. [2025-04-14 01:14:55,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 82 transitions, 408 flow [2025-04-14 01:14:55,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 402 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-04-14 01:14:55,804 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 190 flow [2025-04-14 01:14:55,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2025-04-14 01:14:55,806 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2025-04-14 01:14:55,807 INFO L485 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 190 flow [2025-04-14 01:14:55,807 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2025-04-14 01:14:55,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:55,807 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] [2025-04-14 01:14:55,807 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 01:14:55,807 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:55,807 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash -459339404, now seen corresponding path program 1 times [2025-04-14 01:14:55,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:55,808 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272375384] [2025-04-14 01:14:55,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:14:55,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:55,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-14 01:14:55,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:14:55,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:55,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:56,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:56,167 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272375384] [2025-04-14 01:14:56,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272375384] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:56,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:56,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:14:56,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383589977] [2025-04-14 01:14:56,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:56,167 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:14:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:56,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:14:56,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:14:56,172 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:14:56,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:56,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:56,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:14:56,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:57,744 INFO L116 PetriNetUnfolderBase]: 20481/29459 cut-off events. [2025-04-14 01:14:57,745 INFO L117 PetriNetUnfolderBase]: For 9417/9417 co-relation queries the response was YES. [2025-04-14 01:14:57,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67240 conditions, 29459 events. 20481/29459 cut-off events. For 9417/9417 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 190763 event pairs, 2021 based on Foata normal form. 666/28748 useless extension candidates. Maximal degree in co-relation 56344. Up to 15619 conditions per place. [2025-04-14 01:14:57,870 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 136 selfloop transitions, 13 changer transitions 3/159 dead transitions. [2025-04-14 01:14:57,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 159 transitions, 776 flow [2025-04-14 01:14:57,871 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:14:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:14:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2025-04-14 01:14:57,872 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5841836734693877 [2025-04-14 01:14:57,872 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 190 flow. Second operand 8 states and 229 transitions. [2025-04-14 01:14:57,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 159 transitions, 776 flow [2025-04-14 01:14:57,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 159 transitions, 766 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-04-14 01:14:57,877 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 283 flow [2025-04-14 01:14:57,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=283, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2025-04-14 01:14:57,877 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2025-04-14 01:14:57,877 INFO L485 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 283 flow [2025-04-14 01:14:57,878 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:57,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:57,878 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] [2025-04-14 01:14:57,878 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 01:14:57,878 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:57,878 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash -213941191, now seen corresponding path program 1 times [2025-04-14 01:14:57,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:57,878 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737007597] [2025-04-14 01:14:57,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:14:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:57,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-14 01:14:57,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:14:57,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:57,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:58,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:58,289 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737007597] [2025-04-14 01:14:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737007597] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:58,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:58,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:14:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833663385] [2025-04-14 01:14:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:58,289 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:14:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:58,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:14:58,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:14:58,299 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:14:58,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:58,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:58,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:14:58,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:01,066 INFO L116 PetriNetUnfolderBase]: 26615/38849 cut-off events. [2025-04-14 01:15:01,066 INFO L117 PetriNetUnfolderBase]: For 38480/38771 co-relation queries the response was YES. [2025-04-14 01:15:01,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104498 conditions, 38849 events. 26615/38849 cut-off events. For 38480/38771 co-relation queries the response was YES. Maximal size of possible extension queue 1433. Compared 269586 event pairs, 7147 based on Foata normal form. 286/37325 useless extension candidates. Maximal degree in co-relation 86285. Up to 26979 conditions per place. [2025-04-14 01:15:01,460 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 131 selfloop transitions, 31 changer transitions 13/183 dead transitions. [2025-04-14 01:15:01,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 183 transitions, 1120 flow [2025-04-14 01:15:01,460 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:15:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:15:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 230 transitions. [2025-04-14 01:15:01,461 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5867346938775511 [2025-04-14 01:15:01,461 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 283 flow. Second operand 8 states and 230 transitions. [2025-04-14 01:15:01,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 183 transitions, 1120 flow [2025-04-14 01:15:01,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 183 transitions, 1116 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-04-14 01:15:01,507 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 549 flow [2025-04-14 01:15:01,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=549, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2025-04-14 01:15:01,509 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 34 predicate places. [2025-04-14 01:15:01,510 INFO L485 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 549 flow [2025-04-14 01:15:01,510 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:01,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:01,510 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] [2025-04-14 01:15:01,510 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-14 01:15:01,510 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:15:01,511 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash -796823311, now seen corresponding path program 2 times [2025-04-14 01:15:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:01,511 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121342233] [2025-04-14 01:15:01,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:15:01,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:01,521 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:15:01,550 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 36 statements. [2025-04-14 01:15:01,550 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:15:01,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:15:01,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:01,790 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121342233] [2025-04-14 01:15:01,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121342233] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:01,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:01,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:15:01,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108245751] [2025-04-14 01:15:01,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:01,790 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:15:01,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:01,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:15:01,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:15:01,799 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:15:01,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 549 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:01,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:01,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:15:01,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:04,615 INFO L116 PetriNetUnfolderBase]: 27621/40835 cut-off events. [2025-04-14 01:15:04,615 INFO L117 PetriNetUnfolderBase]: For 57821/57821 co-relation queries the response was YES. [2025-04-14 01:15:04,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127527 conditions, 40835 events. 27621/40835 cut-off events. For 57821/57821 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 293278 event pairs, 7592 based on Foata normal form. 254/41058 useless extension candidates. Maximal degree in co-relation 102971. Up to 31418 conditions per place. [2025-04-14 01:15:04,993 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 97 selfloop transitions, 31 changer transitions 38/174 dead transitions. [2025-04-14 01:15:04,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 174 transitions, 1274 flow [2025-04-14 01:15:04,993 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:15:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:15:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2025-04-14 01:15:04,994 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5568513119533528 [2025-04-14 01:15:04,994 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 549 flow. Second operand 7 states and 191 transitions. [2025-04-14 01:15:04,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 174 transitions, 1274 flow [2025-04-14 01:15:05,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 174 transitions, 1248 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:15:05,217 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 668 flow [2025-04-14 01:15:05,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=668, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2025-04-14 01:15:05,218 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 43 predicate places. [2025-04-14 01:15:05,218 INFO L485 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 668 flow [2025-04-14 01:15:05,218 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:05,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:05,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:15:05,219 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-14 01:15:05,219 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:15:05,219 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:05,219 INFO L85 PathProgramCache]: Analyzing trace with hash -24897711, now seen corresponding path program 3 times [2025-04-14 01:15:05,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:05,219 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209961094] [2025-04-14 01:15:05,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:15:05,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:05,229 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:15:05,237 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 31 of 36 statements. [2025-04-14 01:15:05,237 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:15:05,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:15:05,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:05,623 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209961094] [2025-04-14 01:15:05,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209961094] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:05,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:05,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:15:05,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912392653] [2025-04-14 01:15:05,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:05,624 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:15:05,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:05,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:15:05,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:15:05,631 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:15:05,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 668 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:05,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:05,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:15:05,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:09,037 INFO L116 PetriNetUnfolderBase]: 31858/46031 cut-off events. [2025-04-14 01:15:09,037 INFO L117 PetriNetUnfolderBase]: For 94432/94729 co-relation queries the response was YES. [2025-04-14 01:15:09,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153104 conditions, 46031 events. 31858/46031 cut-off events. For 94432/94729 co-relation queries the response was YES. Maximal size of possible extension queue 1848. Compared 320580 event pairs, 11630 based on Foata normal form. 604/46548 useless extension candidates. Maximal degree in co-relation 119765. Up to 30422 conditions per place. [2025-04-14 01:15:09,437 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 138 selfloop transitions, 62 changer transitions 15/223 dead transitions. [2025-04-14 01:15:09,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 223 transitions, 1850 flow [2025-04-14 01:15:09,438 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:15:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:15:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2025-04-14 01:15:09,439 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5600907029478458 [2025-04-14 01:15:09,439 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 668 flow. Second operand 9 states and 247 transitions. [2025-04-14 01:15:09,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 223 transitions, 1850 flow [2025-04-14 01:15:09,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 223 transitions, 1768 flow, removed 10 selfloop flow, removed 4 redundant places. [2025-04-14 01:15:09,725 INFO L231 Difference]: Finished difference. Result has 103 places, 126 transitions, 1157 flow [2025-04-14 01:15:09,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1157, PETRI_PLACES=103, PETRI_TRANSITIONS=126} [2025-04-14 01:15:09,726 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 52 predicate places. [2025-04-14 01:15:09,726 INFO L485 AbstractCegarLoop]: Abstraction has has 103 places, 126 transitions, 1157 flow [2025-04-14 01:15:09,726 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:09,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:09,726 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] [2025-04-14 01:15:09,726 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-14 01:15:09,726 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:15:09,727 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1415632891, now seen corresponding path program 4 times [2025-04-14 01:15:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:09,727 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987123131] [2025-04-14 01:15:09,727 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:15:09,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:09,739 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:15:09,755 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:15:09,755 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:15:09,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:15:09,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:09,996 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987123131] [2025-04-14 01:15:09,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987123131] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:09,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:09,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:15:09,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286315297] [2025-04-14 01:15:09,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:09,997 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:15:09,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:09,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:15:09,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:15:10,008 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:15:10,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 1157 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:10,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:10,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:15:10,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:15,862 INFO L116 PetriNetUnfolderBase]: 51182/75166 cut-off events. [2025-04-14 01:15:15,862 INFO L117 PetriNetUnfolderBase]: For 184280/184835 co-relation queries the response was YES. [2025-04-14 01:15:16,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263506 conditions, 75166 events. 51182/75166 cut-off events. For 184280/184835 co-relation queries the response was YES. Maximal size of possible extension queue 3196. Compared 574901 event pairs, 10885 based on Foata normal form. 1535/76018 useless extension candidates. Maximal degree in co-relation 212151. Up to 28268 conditions per place. [2025-04-14 01:15:16,581 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 238 selfloop transitions, 127 changer transitions 3/376 dead transitions. [2025-04-14 01:15:16,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 376 transitions, 3925 flow [2025-04-14 01:15:16,581 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:15:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:15:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2025-04-14 01:15:16,582 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6275510204081632 [2025-04-14 01:15:16,582 INFO L175 Difference]: Start difference. First operand has 103 places, 126 transitions, 1157 flow. Second operand 8 states and 246 transitions. [2025-04-14 01:15:16,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 376 transitions, 3925 flow [2025-04-14 01:15:17,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 376 transitions, 3895 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-04-14 01:15:17,538 INFO L231 Difference]: Finished difference. Result has 116 places, 221 transitions, 2928 flow [2025-04-14 01:15:17,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2928, PETRI_PLACES=116, PETRI_TRANSITIONS=221} [2025-04-14 01:15:17,539 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 65 predicate places. [2025-04-14 01:15:17,539 INFO L485 AbstractCegarLoop]: Abstraction has has 116 places, 221 transitions, 2928 flow [2025-04-14 01:15:17,539 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:17,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:17,540 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] [2025-04-14 01:15:17,540 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-14 01:15:17,540 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:15:17,540 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:17,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1250155053, now seen corresponding path program 5 times [2025-04-14 01:15:17,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:17,540 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349486490] [2025-04-14 01:15:17,540 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:15:17,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:17,548 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:15:17,560 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:15:17,560 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:15:17,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:17,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:17,776 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349486490] [2025-04-14 01:15:17,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349486490] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:17,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:17,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:15:17,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157853142] [2025-04-14 01:15:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:17,777 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:15:17,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:17,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:15:17,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:15:17,787 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:15:17,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 221 transitions, 2928 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:17,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:17,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:15:17,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:24,532 INFO L116 PetriNetUnfolderBase]: 52902/78150 cut-off events. [2025-04-14 01:15:24,533 INFO L117 PetriNetUnfolderBase]: For 324144/324420 co-relation queries the response was YES. [2025-04-14 01:15:25,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326071 conditions, 78150 events. 52902/78150 cut-off events. For 324144/324420 co-relation queries the response was YES. Maximal size of possible extension queue 3280. Compared 607461 event pairs, 10568 based on Foata normal form. 205/77628 useless extension candidates. Maximal degree in co-relation 264688. Up to 59286 conditions per place. [2025-04-14 01:15:25,389 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 170 selfloop transitions, 122 changer transitions 38/338 dead transitions. [2025-04-14 01:15:25,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 338 transitions, 4407 flow [2025-04-14 01:15:25,390 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:15:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:15:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2025-04-14 01:15:25,391 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.577259475218659 [2025-04-14 01:15:25,391 INFO L175 Difference]: Start difference. First operand has 116 places, 221 transitions, 2928 flow. Second operand 7 states and 198 transitions. [2025-04-14 01:15:25,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 338 transitions, 4407 flow [2025-04-14 01:15:29,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 338 transitions, 4312 flow, removed 32 selfloop flow, removed 1 redundant places. [2025-04-14 01:15:29,972 INFO L231 Difference]: Finished difference. Result has 124 places, 226 transitions, 3218 flow [2025-04-14 01:15:29,972 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3218, PETRI_PLACES=124, PETRI_TRANSITIONS=226} [2025-04-14 01:15:29,973 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 73 predicate places. [2025-04-14 01:15:29,973 INFO L485 AbstractCegarLoop]: Abstraction has has 124 places, 226 transitions, 3218 flow [2025-04-14 01:15:29,973 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:29,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:29,973 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] [2025-04-14 01:15:29,973 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-14 01:15:29,973 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:15:29,973 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:29,973 INFO L85 PathProgramCache]: Analyzing trace with hash 912173177, now seen corresponding path program 6 times [2025-04-14 01:15:29,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:29,974 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553019554] [2025-04-14 01:15:29,974 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:15:29,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:29,985 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:15:29,994 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 35 of 36 statements. [2025-04-14 01:15:29,995 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:15:29,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:30,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:30,218 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553019554] [2025-04-14 01:15:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553019554] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:30,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:30,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:15:30,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610584901] [2025-04-14 01:15:30,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:30,218 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:15:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:30,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:15:30,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:15:30,226 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:15:30,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 226 transitions, 3218 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:30,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:30,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:15:30,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:39,225 INFO L116 PetriNetUnfolderBase]: 67112/99539 cut-off events. [2025-04-14 01:15:39,225 INFO L117 PetriNetUnfolderBase]: For 408641/409319 co-relation queries the response was YES. [2025-04-14 01:15:39,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407827 conditions, 99539 events. 67112/99539 cut-off events. For 408641/409319 co-relation queries the response was YES. Maximal size of possible extension queue 4308. Compared 796593 event pairs, 20251 based on Foata normal form. 2945/101729 useless extension candidates. Maximal degree in co-relation 330200. Up to 66643 conditions per place. [2025-04-14 01:15:40,208 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 208 selfloop transitions, 145 changer transitions 10/371 dead transitions. [2025-04-14 01:15:40,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 371 transitions, 5073 flow [2025-04-14 01:15:40,209 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:15:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:15:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2025-04-14 01:15:40,210 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2025-04-14 01:15:40,210 INFO L175 Difference]: Start difference. First operand has 124 places, 226 transitions, 3218 flow. Second operand 8 states and 228 transitions. [2025-04-14 01:15:40,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 371 transitions, 5073 flow [2025-04-14 01:15:45,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 371 transitions, 4834 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-04-14 01:15:45,262 INFO L231 Difference]: Finished difference. Result has 130 places, 252 transitions, 3883 flow [2025-04-14 01:15:45,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3883, PETRI_PLACES=130, PETRI_TRANSITIONS=252} [2025-04-14 01:15:45,263 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 79 predicate places. [2025-04-14 01:15:45,263 INFO L485 AbstractCegarLoop]: Abstraction has has 130 places, 252 transitions, 3883 flow [2025-04-14 01:15:45,263 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:45,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:45,264 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] [2025-04-14 01:15:45,264 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-14 01:15:45,264 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:15:45,264 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1778058271, now seen corresponding path program 7 times [2025-04-14 01:15:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:45,266 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533627440] [2025-04-14 01:15:45,267 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:15:45,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:45,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-14 01:15:45,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:15:45,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:15:45,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:15:45,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:45,551 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533627440] [2025-04-14 01:15:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533627440] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:45,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:15:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159902304] [2025-04-14 01:15:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:45,552 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:15:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:45,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:15:45,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:15:45,560 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-04-14 01:15:45,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 252 transitions, 3883 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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) [2025-04-14 01:15:45,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:45,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-04-14 01:15:45,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:57,515 INFO L116 PetriNetUnfolderBase]: 86055/126455 cut-off events. [2025-04-14 01:15:57,516 INFO L117 PetriNetUnfolderBase]: For 626565/627147 co-relation queries the response was YES. [2025-04-14 01:15:58,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553596 conditions, 126455 events. 86055/126455 cut-off events. For 626565/627147 co-relation queries the response was YES. Maximal size of possible extension queue 5149. Compared 1017950 event pairs, 25567 based on Foata normal form. 893/126249 useless extension candidates. Maximal degree in co-relation 443102. Up to 98331 conditions per place. [2025-04-14 01:15:58,858 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 257 selfloop transitions, 212 changer transitions 17/492 dead transitions. [2025-04-14 01:15:58,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 492 transitions, 7740 flow [2025-04-14 01:15:58,858 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:15:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:15:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 251 transitions. [2025-04-14 01:15:58,859 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5691609977324263 [2025-04-14 01:15:58,859 INFO L175 Difference]: Start difference. First operand has 130 places, 252 transitions, 3883 flow. Second operand 9 states and 251 transitions. [2025-04-14 01:15:58,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 492 transitions, 7740 flow [2025-04-14 01:16:11,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 492 transitions, 7689 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-04-14 01:16:11,478 INFO L231 Difference]: Finished difference. Result has 143 places, 333 transitions, 6235 flow [2025-04-14 01:16:11,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6235, PETRI_PLACES=143, PETRI_TRANSITIONS=333} [2025-04-14 01:16:11,479 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2025-04-14 01:16:11,479 INFO L485 AbstractCegarLoop]: Abstraction has has 143 places, 333 transitions, 6235 flow [2025-04-14 01:16:11,479 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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) [2025-04-14 01:16:11,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:16:11,479 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] [2025-04-14 01:16:11,480 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-14 01:16:11,480 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:16:11,480 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:16:11,480 INFO L85 PathProgramCache]: Analyzing trace with hash 87598573, now seen corresponding path program 8 times [2025-04-14 01:16:11,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:16:11,480 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285600839] [2025-04-14 01:16:11,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:16:11,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:16:11,486 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:16:11,498 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 35 of 36 statements. [2025-04-14 01:16:11,499 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:16:11,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:16:11,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:16:11,658 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285600839] [2025-04-14 01:16:11,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285600839] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:16:11,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:16:11,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:16:11,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859195060] [2025-04-14 01:16:11,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:16:11,658 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:16:11,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:16:11,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:16:11,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:16:11,664 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:16:11,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 333 transitions, 6235 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:16:11,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:16:11,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:16:11,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:16:26,496 INFO L116 PetriNetUnfolderBase]: 94478/140715 cut-off events. [2025-04-14 01:16:26,496 INFO L117 PetriNetUnfolderBase]: For 841427/842494 co-relation queries the response was YES. [2025-04-14 01:16:28,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657841 conditions, 140715 events. 94478/140715 cut-off events. For 841427/842494 co-relation queries the response was YES. Maximal size of possible extension queue 6320. Compared 1187659 event pairs, 24810 based on Foata normal form. 2650/141728 useless extension candidates. Maximal degree in co-relation 639434. Up to 64112 conditions per place. [2025-04-14 01:16:28,418 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 266 selfloop transitions, 320 changer transitions 19/614 dead transitions. [2025-04-14 01:16:28,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 614 transitions, 10956 flow [2025-04-14 01:16:28,418 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:16:28,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:16:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 259 transitions. [2025-04-14 01:16:28,419 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2025-04-14 01:16:28,419 INFO L175 Difference]: Start difference. First operand has 143 places, 333 transitions, 6235 flow. Second operand 9 states and 259 transitions. [2025-04-14 01:16:28,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 614 transitions, 10956 flow [2025-04-14 01:16:52,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 614 transitions, 10676 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-04-14 01:16:52,641 INFO L231 Difference]: Finished difference. Result has 155 places, 428 transitions, 9126 flow [2025-04-14 01:16:52,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6032, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9126, PETRI_PLACES=155, PETRI_TRANSITIONS=428} [2025-04-14 01:16:52,642 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 104 predicate places. [2025-04-14 01:16:52,642 INFO L485 AbstractCegarLoop]: Abstraction has has 155 places, 428 transitions, 9126 flow [2025-04-14 01:16:52,642 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:16:52,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:16:52,642 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] [2025-04-14 01:16:52,642 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-04-14 01:16:52,642 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:16:52,642 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:16:52,642 INFO L85 PathProgramCache]: Analyzing trace with hash 799937261, now seen corresponding path program 9 times [2025-04-14 01:16:52,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:16:52,643 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332367015] [2025-04-14 01:16:52,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:16:52,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:16:52,648 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:16:52,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 35 of 36 statements. [2025-04-14 01:16:52,655 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:16:52,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:16:52,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:16:52,867 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332367015] [2025-04-14 01:16:52,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332367015] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:16:52,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:16:52,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:16:52,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476573254] [2025-04-14 01:16:52,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:16:52,867 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:16:52,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:16:52,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:16:52,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:16:52,870 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-04-14 01:16:52,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 428 transitions, 9126 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:16:52,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:16:52,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-04-14 01:16:52,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand