/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.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 20:16:49,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 20:16:49,144 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 [2025-04-13 20:16:49,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 20:16:49,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 20:16:49,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 20:16:49,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 20:16:49,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 20:16:49,170 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 20:16:49,170 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 20:16:49,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 20:16:49,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 20:16:49,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 20:16:49,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 20:16:49,170 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 20:16:49,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 20:16:49,171 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:16:49,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:16:49,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:16:49,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 20:16:49,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 20:16:49,173 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 [2025-04-13 20:16:49,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 20:16:49,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 20:16:49,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 20:16:49,418 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 20:16:49,418 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 20:16:49,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2025-04-13 20:16:50,707 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31161aca9/52856bda654c4c639caf18a557140381/FLAGce98e4b64 [2025-04-13 20:16:50,904 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 20:16:50,905 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2025-04-13 20:16:50,913 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31161aca9/52856bda654c4c639caf18a557140381/FLAGce98e4b64 [2025-04-13 20:16:51,757 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31161aca9/52856bda654c4c639caf18a557140381 [2025-04-13 20:16:51,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 20:16:51,760 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 20:16:51,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 20:16:51,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 20:16:51,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 20:16:51,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:51,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693f458b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51, skipping insertion in model container [2025-04-13 20:16:51,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:51,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 20:16:51,929 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-parallel-sum-1-dsl.wvr.c[4450,4463] [2025-04-13 20:16:51,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:16:51,944 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 20:16:51,970 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-parallel-sum-1-dsl.wvr.c[4450,4463] [2025-04-13 20:16:51,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:16:51,987 INFO L204 MainTranslator]: Completed translation [2025-04-13 20:16:51,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51 WrapperNode [2025-04-13 20:16:51,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 20:16:51,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 20:16:51,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 20:16:51,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 20:16:51,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,020 INFO L138 Inliner]: procedures = 28, calls = 65, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 292 [2025-04-13 20:16:52,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 20:16:52,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 20:16:52,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 20:16:52,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 20:16:52,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,042 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-13 20:16:52,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,048 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,049 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 20:16:52,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 20:16:52,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 20:16:52,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 20:16:52,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (1/1) ... [2025-04-13 20:16:52,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:16:52,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 20:16:52,101 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) [2025-04-13 20:16:52,104 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 [2025-04-13 20:16:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 20:16:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 20:16:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 20:16:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 20:16:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 20:16:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 20:16:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 20:16:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 20:16:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 20:16:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 20:16:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 20:16:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-13 20:16:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-13 20:16:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 20:16:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 20:16:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-13 20:16:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-13 20:16:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-13 20:16:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-13 20:16:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 20:16:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 20:16:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 20:16:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 20:16:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 20:16:52,127 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 20:16:52,221 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 20:16:52,223 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 20:16:52,550 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 20:16:52,551 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 20:16:52,551 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 20:16:52,889 INFO L313 CfgBuilder]: Removed 4 assume(true) statements. [2025-04-13 20:16:52,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:16:52 BoogieIcfgContainer [2025-04-13 20:16:52,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 20:16:52,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 20:16:52,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 20:16:52,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 20:16:52,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 08:16:51" (1/3) ... [2025-04-13 20:16:52,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adbbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:16:52, skipping insertion in model container [2025-04-13 20:16:52,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:16:51" (2/3) ... [2025-04-13 20:16:52,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adbbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:16:52, skipping insertion in model container [2025-04-13 20:16:52,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:16:52" (3/3) ... [2025-04-13 20:16:52,900 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2025-04-13 20:16:52,910 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 20:16:52,911 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-1-dsl.wvr.c that has 7 procedures, 61 locations, 59 edges, 1 initial locations, 5 loop locations, and 1 error locations. [2025-04-13 20:16:52,912 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 20:16:52,994 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2025-04-13 20:16:53,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 75 transitions, 216 flow [2025-04-13 20:16:53,051 INFO L116 PetriNetUnfolderBase]: 9/63 cut-off events. [2025-04-13 20:16:53,052 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-13 20:16:53,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 63 events. 9/63 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2025-04-13 20:16:53,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 75 transitions, 216 flow [2025-04-13 20:16:53,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 62 transitions, 172 flow [2025-04-13 20:16:53,061 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 20:16:53,067 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;@6b6977f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 20:16:53,068 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-04-13 20:16:53,103 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 20:16:53,104 INFO L116 PetriNetUnfolderBase]: 9/61 cut-off events. [2025-04-13 20:16:53,104 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-13 20:16:53,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:16:53,104 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] [2025-04-13 20:16:53,105 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 20:16:53,108 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:16:53,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1049878399, now seen corresponding path program 1 times [2025-04-13 20:16:53,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:16:53,113 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988739957] [2025-04-13 20:16:53,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:16:53,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:16:53,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:16:53,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:16:53,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:16:53,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:16:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:16:53,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:16:53,464 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988739957] [2025-04-13 20:16:53,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988739957] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:16:53,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:16:53,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 20:16:53,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482957179] [2025-04-13 20:16:53,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:16:53,472 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 20:16:53,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:16:53,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 20:16:53,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 20:16:53,493 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 79 [2025-04-13 20:16:53,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-04-13 20:16:53,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:16:53,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 79 [2025-04-13 20:16:53,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:17:10,728 INFO L116 PetriNetUnfolderBase]: 327220/400651 cut-off events. [2025-04-13 20:17:10,728 INFO L117 PetriNetUnfolderBase]: For 30391/30391 co-relation queries the response was YES. [2025-04-13 20:17:11,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838453 conditions, 400651 events. 327220/400651 cut-off events. For 30391/30391 co-relation queries the response was YES. Maximal size of possible extension queue 12128. Compared 2278394 event pairs, 121236 based on Foata normal form. 1/332689 useless extension candidates. Maximal degree in co-relation 835512. Up to 183797 conditions per place. [2025-04-13 20:17:12,447 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 146 selfloop transitions, 8 changer transitions 1/159 dead transitions. [2025-04-13 20:17:12,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 159 transitions, 760 flow [2025-04-13 20:17:12,448 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 20:17:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 20:17:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2025-04-13 20:17:12,456 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.620253164556962 [2025-04-13 20:17:12,457 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 172 flow. Second operand 4 states and 196 transitions. [2025-04-13 20:17:12,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 159 transitions, 760 flow [2025-04-13 20:17:13,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 159 transitions, 672 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-04-13 20:17:13,667 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 193 flow [2025-04-13 20:17:13,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2025-04-13 20:17:13,673 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2025-04-13 20:17:13,673 INFO L485 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 193 flow [2025-04-13 20:17:13,673 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-04-13 20:17:13,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:17:13,674 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] [2025-04-13 20:17:13,674 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 20:17:13,674 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 20:17:13,675 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:17:13,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2090726993, now seen corresponding path program 2 times [2025-04-13 20:17:13,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:17:13,676 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277843927] [2025-04-13 20:17:13,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 20:17:13,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:17:13,697 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:17:13,715 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:17:13,715 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:17:13,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:17:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:17:13,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:17:13,958 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277843927] [2025-04-13 20:17:13,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277843927] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:17:13,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:17:13,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 20:17:13,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130085414] [2025-04-13 20:17:13,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:17:13,959 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 20:17:13,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:17:13,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 20:17:13,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 20:17:13,960 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 79 [2025-04-13 20:17:13,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-04-13 20:17:13,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:17:13,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 79 [2025-04-13 20:17:13,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:17:37,908 INFO L116 PetriNetUnfolderBase]: 495328/607398 cut-off events. [2025-04-13 20:17:37,908 INFO L117 PetriNetUnfolderBase]: For 59454/59454 co-relation queries the response was YES. [2025-04-13 20:17:38,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308688 conditions, 607398 events. 495328/607398 cut-off events. For 59454/59454 co-relation queries the response was YES. Maximal size of possible extension queue 17938. Compared 3591667 event pairs, 189175 based on Foata normal form. 1/510024 useless extension candidates. Maximal degree in co-relation 594879. Up to 307151 conditions per place. [2025-04-13 20:17:40,329 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 148 selfloop transitions, 11 changer transitions 1/164 dead transitions. [2025-04-13 20:17:40,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 164 transitions, 753 flow [2025-04-13 20:17:40,330 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 20:17:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 20:17:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2025-04-13 20:17:40,331 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6139240506329114 [2025-04-13 20:17:40,331 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 193 flow. Second operand 4 states and 194 transitions. [2025-04-13 20:17:40,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 164 transitions, 753 flow [2025-04-13 20:17:40,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 164 transitions, 753 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 20:17:40,402 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 272 flow [2025-04-13 20:17:40,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2025-04-13 20:17:40,402 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2025-04-13 20:17:40,402 INFO L485 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 272 flow [2025-04-13 20:17:40,403 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-04-13 20:17:40,403 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:17:40,403 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] [2025-04-13 20:17:40,403 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 20:17:40,403 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-04-13 20:17:40,403 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:17:40,403 INFO L85 PathProgramCache]: Analyzing trace with hash -167549605, now seen corresponding path program 1 times [2025-04-13 20:17:40,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:17:40,404 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476001157] [2025-04-13 20:17:40,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:17:40,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:17:40,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-04-13 20:17:40,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 20:17:40,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:17:40,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:17:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:17:40,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:17:40,747 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476001157] [2025-04-13 20:17:40,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476001157] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:17:40,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:17:40,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 20:17:40,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838609358] [2025-04-13 20:17:40,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:17:40,748 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:17:40,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:17:40,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:17:40,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:17:40,749 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 79 [2025-04-13 20:17:40,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2025-04-13 20:17:40,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:17:40,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 79 [2025-04-13 20:17:40,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand