/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/parallel-barrier-loop.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:51:39,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:51:39,864 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 00:51:39,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:51:39,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:51:39,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:51:39,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:51:39,884 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:51:39,884 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:51:39,884 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:51:39,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:51:39,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:51:39,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:51:39,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:51:39,884 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:51:39,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:51:39,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:51:39,885 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:51:39,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:51:39,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:51:39,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:51:39,886 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:51:39,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:51:39,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:51:39,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:51:39,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:51:39,887 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:51:39,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:51:39,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:51:39,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:51:39,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:51:39,887 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:51:39,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:51:39,887 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 00:51:40,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:51:40,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:51:40,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:51:40,115 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:51:40,116 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:51:40,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier-loop.wvr.c [2025-04-14 00:51:41,474 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43b054e03/6132fc5ba9274b96a579701560d7aa6a/FLAGbe99374df [2025-04-14 00:51:41,682 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:51:41,683 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier-loop.wvr.c [2025-04-14 00:51:41,690 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43b054e03/6132fc5ba9274b96a579701560d7aa6a/FLAGbe99374df [2025-04-14 00:51:42,523 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43b054e03/6132fc5ba9274b96a579701560d7aa6a [2025-04-14 00:51:42,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:51:42,526 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:51:42,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:51:42,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:51:42,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:51:42,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791507b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42, skipping insertion in model container [2025-04-14 00:51:42,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,553 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:51:42,742 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/parallel-barrier-loop.wvr.c[3922,3935] [2025-04-14 00:51:42,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:51:42,759 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:51:42,790 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/parallel-barrier-loop.wvr.c[3922,3935] [2025-04-14 00:51:42,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:51:42,802 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:51:42,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42 WrapperNode [2025-04-14 00:51:42,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:51:42,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:51:42,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:51:42,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:51:42,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,843 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 223 [2025-04-14 00:51:42,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:51:42,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:51:42,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:51:42,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:51:42,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,877 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-14 00:51:42,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,884 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:51:42,901 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:51:42,901 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:51:42,901 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:51:42,902 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (1/1) ... [2025-04-14 00:51:42,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:51:42,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:51:42,926 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 00:51:42,929 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 00:51:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:51:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 00:51:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 00:51:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 00:51:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 00:51:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 00:51:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 00:51:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-14 00:51:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-14 00:51:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:51:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-14 00:51:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-14 00:51:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-14 00:51:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-14 00:51:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:51:42,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:51:42,948 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 00:51:43,024 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:51:43,026 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:51:43,285 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:51:43,286 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:51:43,286 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:51:43,506 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:51:43,511 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:51:43,516 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:51:43,535 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:51:43,541 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:51:43,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:51:43 BoogieIcfgContainer [2025-04-14 00:51:43,542 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:51:43,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:51:43,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:51:43,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:51:43,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:51:42" (1/3) ... [2025-04-14 00:51:43,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e81f527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:51:43, skipping insertion in model container [2025-04-14 00:51:43,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:51:42" (2/3) ... [2025-04-14 00:51:43,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e81f527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:51:43, skipping insertion in model container [2025-04-14 00:51:43,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:51:43" (3/3) ... [2025-04-14 00:51:43,548 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-barrier-loop.wvr.c [2025-04-14 00:51:43,558 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:51:43,559 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-barrier-loop.wvr.c that has 7 procedures, 82 locations, 83 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-14 00:51:43,559 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:51:43,658 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2025-04-14 00:51:43,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 99 transitions, 264 flow [2025-04-14 00:51:43,728 INFO L116 PetriNetUnfolderBase]: 12/87 cut-off events. [2025-04-14 00:51:43,731 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-14 00:51:43,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 87 events. 12/87 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 185 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2025-04-14 00:51:43,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 99 transitions, 264 flow [2025-04-14 00:51:43,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 86 transitions, 220 flow [2025-04-14 00:51:43,749 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:51:43,760 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;@580f9a82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:51:43,760 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-04-14 00:51:43,776 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:51:43,777 INFO L116 PetriNetUnfolderBase]: 12/85 cut-off events. [2025-04-14 00:51:43,777 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-14 00:51:43,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:51:43,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:51:43,778 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:51:43,781 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:51:43,781 INFO L85 PathProgramCache]: Analyzing trace with hash -202890773, now seen corresponding path program 1 times [2025-04-14 00:51:43,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:51:43,788 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569858575] [2025-04-14 00:51:43,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:51:43,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:51:43,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-04-14 00:51:43,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-04-14 00:51:43,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:51:43,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:51:44,209 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 00:51:44,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:51:44,209 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569858575] [2025-04-14 00:51:44,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569858575] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:51:44,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:51:44,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:51:44,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143430837] [2025-04-14 00:51:44,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:51:44,215 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:51:44,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:51:44,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:51:44,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:51:44,236 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 103 [2025-04-14 00:51:44,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 00:51:44,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:51:44,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 103 [2025-04-14 00:51:44,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:51:56,884 INFO L116 PetriNetUnfolderBase]: 250912/304205 cut-off events. [2025-04-14 00:51:56,884 INFO L117 PetriNetUnfolderBase]: For 24211/24211 co-relation queries the response was YES. [2025-04-14 00:51:57,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634059 conditions, 304205 events. 250912/304205 cut-off events. For 24211/24211 co-relation queries the response was YES. Maximal size of possible extension queue 4604. Compared 1429725 event pairs, 62050 based on Foata normal form. 1/251312 useless extension candidates. Maximal degree in co-relation 632388. Up to 294743 conditions per place. [2025-04-14 00:51:58,268 INFO L140 encePairwiseOnDemand]: 95/103 looper letters, 121 selfloop transitions, 7 changer transitions 1/129 dead transitions. [2025-04-14 00:51:58,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 129 transitions, 609 flow [2025-04-14 00:51:58,269 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:51:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:51:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2025-04-14 00:51:58,278 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47896440129449835 [2025-04-14 00:51:58,281 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 220 flow. Second operand 3 states and 148 transitions. [2025-04-14 00:51:58,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 129 transitions, 609 flow [2025-04-14 00:51:58,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 129 transitions, 547 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-04-14 00:51:58,662 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 227 flow [2025-04-14 00:51:58,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2025-04-14 00:51:58,666 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -9 predicate places. [2025-04-14 00:51:58,666 INFO L485 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 227 flow [2025-04-14 00:51:58,666 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 00:51:58,666 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:51:58,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:51:58,666 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:51:58,667 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:51:58,667 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:51:58,667 INFO L85 PathProgramCache]: Analyzing trace with hash 659383364, now seen corresponding path program 1 times [2025-04-14 00:51:58,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:51:58,668 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4212283] [2025-04-14 00:51:58,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:51:58,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:51:58,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-04-14 00:51:58,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-04-14 00:51:58,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:51:58,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:51:58,787 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 00:51:58,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:51:58,788 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4212283] [2025-04-14 00:51:58,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4212283] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:51:58,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:51:58,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:51:58,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579594038] [2025-04-14 00:51:58,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:51:58,789 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:51:58,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:51:58,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:51:58,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:51:58,791 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 103 [2025-04-14 00:51:58,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 00:51:58,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:51:58,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 103 [2025-04-14 00:51:58,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:52:11,575 INFO L116 PetriNetUnfolderBase]: 276729/337522 cut-off events. [2025-04-14 00:52:11,575 INFO L117 PetriNetUnfolderBase]: For 29219/29219 co-relation queries the response was YES. [2025-04-14 00:52:11,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711895 conditions, 337522 events. 276729/337522 cut-off events. For 29219/29219 co-relation queries the response was YES. Maximal size of possible extension queue 4732. Compared 1657733 event pairs, 110380 based on Foata normal form. 5760/288104 useless extension candidates. Maximal degree in co-relation 320786. Up to 181490 conditions per place. [2025-04-14 00:52:12,963 INFO L140 encePairwiseOnDemand]: 98/103 looper letters, 137 selfloop transitions, 3 changer transitions 2/142 dead transitions. [2025-04-14 00:52:12,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 142 transitions, 633 flow [2025-04-14 00:52:12,964 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:52:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:52:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2025-04-14 00:52:12,965 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.511326860841424 [2025-04-14 00:52:12,965 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 227 flow. Second operand 3 states and 158 transitions. [2025-04-14 00:52:12,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 142 transitions, 633 flow [2025-04-14 00:52:12,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 142 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 00:52:12,968 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 244 flow [2025-04-14 00:52:12,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2025-04-14 00:52:12,968 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2025-04-14 00:52:12,969 INFO L485 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 244 flow [2025-04-14 00:52:12,969 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 00:52:12,969 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:52:12,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:52:12,969 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:52:12,969 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:52:12,970 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:52:12,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1719596020, now seen corresponding path program 1 times [2025-04-14 00:52:12,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:52:12,970 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775991539] [2025-04-14 00:52:12,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:52:12,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:52:12,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-04-14 00:52:12,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-04-14 00:52:12,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:52:12,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:13,095 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 00:52:13,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:52:13,096 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775991539] [2025-04-14 00:52:13,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775991539] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:52:13,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:52:13,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:52:13,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685792726] [2025-04-14 00:52:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:52:13,096 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:52:13,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:52:13,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:52:13,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:52:13,097 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 103 [2025-04-14 00:52:13,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 00:52:13,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:52:13,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 103 [2025-04-14 00:52:13,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:52:25,844 INFO L116 PetriNetUnfolderBase]: 267444/328477 cut-off events. [2025-04-14 00:52:25,844 INFO L117 PetriNetUnfolderBase]: For 54883/54883 co-relation queries the response was YES. [2025-04-14 00:52:26,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729509 conditions, 328477 events. 267444/328477 cut-off events. For 54883/54883 co-relation queries the response was YES. Maximal size of possible extension queue 4753. Compared 1654971 event pairs, 105149 based on Foata normal form. 6720/282869 useless extension candidates. Maximal degree in co-relation 329498. Up to 171009 conditions per place. [2025-04-14 00:52:26,936 INFO L140 encePairwiseOnDemand]: 98/103 looper letters, 135 selfloop transitions, 3 changer transitions 7/145 dead transitions. [2025-04-14 00:52:26,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 145 transitions, 672 flow [2025-04-14 00:52:26,937 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:52:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:52:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2025-04-14 00:52:26,938 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.511326860841424 [2025-04-14 00:52:26,938 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 244 flow. Second operand 3 states and 158 transitions. [2025-04-14 00:52:26,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 145 transitions, 672 flow [2025-04-14 00:52:26,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 145 transitions, 662 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-14 00:52:26,992 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 262 flow [2025-04-14 00:52:26,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2025-04-14 00:52:26,993 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -4 predicate places. [2025-04-14 00:52:26,993 INFO L485 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 262 flow [2025-04-14 00:52:26,993 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 00:52:26,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:52:26,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:52:26,994 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:52:26,994 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-14 00:52:26,994 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:52:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1007924331, now seen corresponding path program 1 times [2025-04-14 00:52:26,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:52:26,994 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976879672] [2025-04-14 00:52:26,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:52:26,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:52:27,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-04-14 00:52:27,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-04-14 00:52:27,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:52:27,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:27,050 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 00:52:27,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:52:27,050 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976879672] [2025-04-14 00:52:27,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976879672] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:52:27,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:52:27,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:52:27,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187965410] [2025-04-14 00:52:27,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:52:27,051 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:52:27,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:52:27,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:52:27,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:52:27,051 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 103 [2025-04-14 00:52:27,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 00:52:27,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:52:27,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 103 [2025-04-14 00:52:27,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand