./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:39:55,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:39:55,960 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:39:55,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:39:55,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:39:55,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:39:55,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:39:55,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:39:55,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:39:55,984 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:39:55,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:39:55,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:39:55,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:39:55,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:39:55,986 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:39:55,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:39:55,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:39:55,986 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:39:55,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:39:55,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:39:55,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:39:55,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:39:55,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:39:55,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:39:55,986 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:39:55,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:39:55,987 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:39:55,987 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:39:55,987 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:39:55,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:39:55,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:39:55,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:39:55,988 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 [2025-03-17 06:39:56,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:39:56,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:39:56,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:39:56,204 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:39:56,204 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:39:56,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2025-03-17 06:39:57,325 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695f8a55e/599182f3a75e466c8cbd3908fa15471f/FLAGb3ce771e0 [2025-03-17 06:39:57,552 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:39:57,552 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2025-03-17 06:39:57,558 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695f8a55e/599182f3a75e466c8cbd3908fa15471f/FLAGb3ce771e0 [2025-03-17 06:39:57,897 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695f8a55e/599182f3a75e466c8cbd3908fa15471f [2025-03-17 06:39:57,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:39:57,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:39:57,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:39:57,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:39:57,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:39:57,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:39:57" (1/1) ... [2025-03-17 06:39:57,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c93915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:57, skipping insertion in model container [2025-03-17 06:39:57,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:39:57" (1/1) ... [2025-03-17 06:39:57,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:39:58,026 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2025-03-17 06:39:58,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:39:58,040 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:39:58,063 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2025-03-17 06:39:58,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:39:58,078 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:39:58,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58 WrapperNode [2025-03-17 06:39:58,079 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:39:58,080 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:39:58,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:39:58,080 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:39:58,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,095 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,121 INFO L138 Inliner]: procedures = 28, calls = 58, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 370 [2025-03-17 06:39:58,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:39:58,122 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:39:58,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:39:58,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:39:58,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,146 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]. [2025-03-17 06:39:58,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,156 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:39:58,163 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:39:58,163 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:39:58,163 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:39:58,164 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (1/1) ... [2025-03-17 06:39:58,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:39:58,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:39:58,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 06:39:58,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 06:39:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:39:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:39:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:39:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:39:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:39:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 06:39:58,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 06:39:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 06:39:58,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 06:39:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 06:39:58,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 06:39:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-17 06:39:58,214 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-17 06:39:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:39:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:39:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-03-17 06:39:58,214 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-03-17 06:39:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-03-17 06:39:58,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-03-17 06:39:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 06:39:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 06:39:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:39:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:39:58,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:39:58,216 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:39:58,327 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:39:58,328 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:39:58,721 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:39:58,722 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:39:59,009 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:39:59,009 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:39:59,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:39:59 BoogieIcfgContainer [2025-03-17 06:39:59,009 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:39:59,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:39:59,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:39:59,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:39:59,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:39:57" (1/3) ... [2025-03-17 06:39:59,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf7c54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:39:59, skipping insertion in model container [2025-03-17 06:39:59,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:39:58" (2/3) ... [2025-03-17 06:39:59,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf7c54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:39:59, skipping insertion in model container [2025-03-17 06:39:59,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:39:59" (3/3) ... [2025-03-17 06:39:59,016 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2025-03-17 06:39:59,026 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:39:59,027 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-2.wvr.c that has 7 procedures, 62 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-03-17 06:39:59,028 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:39:59,095 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2025-03-17 06:39:59,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 234 flow [2025-03-17 06:39:59,175 INFO L124 PetriNetUnfolderBase]: 13/68 cut-off events. [2025-03-17 06:39:59,178 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 06:39:59,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 68 events. 13/68 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 163 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 77. Up to 3 conditions per place. [2025-03-17 06:39:59,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 234 flow [2025-03-17 06:39:59,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 67 transitions, 182 flow [2025-03-17 06:39:59,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:39:59,208 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@348be33d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:39:59,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-03-17 06:39:59,232 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:39:59,232 INFO L124 PetriNetUnfolderBase]: 13/66 cut-off events. [2025-03-17 06:39:59,233 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 06:39:59,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:39:59,233 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] [2025-03-17 06:39:59,234 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-03-17 06:39:59,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:39:59,239 INFO L85 PathProgramCache]: Analyzing trace with hash 624633940, now seen corresponding path program 1 times [2025-03-17 06:39:59,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:39:59,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045665643] [2025-03-17 06:39:59,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:39:59,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:39:59,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-17 06:39:59,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 06:39:59,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:39:59,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:39:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:39:59,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:39:59,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045665643] [2025-03-17 06:39:59,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045665643] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:39:59,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:39:59,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:39:59,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43970691] [2025-03-17 06:39:59,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:39:59,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:39:59,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:39:59,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:39:59,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:39:59,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 88 [2025-03-17 06:39:59,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:39:59,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:39:59,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 88 [2025-03-17 06:39:59,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:40:06,677 INFO L124 PetriNetUnfolderBase]: 135041/166671 cut-off events. [2025-03-17 06:40:06,678 INFO L125 PetriNetUnfolderBase]: For 14707/14707 co-relation queries the response was YES. [2025-03-17 06:40:06,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349618 conditions, 166671 events. 135041/166671 cut-off events. For 14707/14707 co-relation queries the response was YES. Maximal size of possible extension queue 4254. Compared 841487 event pairs, 115423 based on Foata normal form. 0/147065 useless extension candidates. Maximal degree in co-relation 348585. Up to 166532 conditions per place. [2025-03-17 06:40:07,435 INFO L140 encePairwiseOnDemand]: 84/88 looper letters, 58 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2025-03-17 06:40:07,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 290 flow [2025-03-17 06:40:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:40:07,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 06:40:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2025-03-17 06:40:07,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2025-03-17 06:40:07,444 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 182 flow. Second operand 2 states and 84 transitions. [2025-03-17 06:40:07,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 290 flow [2025-03-17 06:40:07,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 258 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-03-17 06:40:07,719 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 142 flow [2025-03-17 06:40:07,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=142, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2025-03-17 06:40:07,723 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2025-03-17 06:40:07,723 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 142 flow [2025-03-17 06:40:07,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:40:07,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:40:07,723 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] [2025-03-17 06:40:07,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:40:07,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-03-17 06:40:07,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:40:07,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1827140933, now seen corresponding path program 1 times [2025-03-17 06:40:07,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:40:07,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957095698] [2025-03-17 06:40:07,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:40:07,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:40:07,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-17 06:40:07,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-17 06:40:07,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:40:07,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:40:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:40:08,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:40:08,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957095698] [2025-03-17 06:40:08,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957095698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:40:08,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:40:08,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 06:40:08,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617887183] [2025-03-17 06:40:08,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:40:08,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:40:08,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:40:08,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:40:08,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:40:08,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 88 [2025-03-17 06:40:08,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:40:08,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:40:08,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 88 [2025-03-17 06:40:08,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:40:17,066 INFO L124 PetriNetUnfolderBase]: 202392/251183 cut-off events. [2025-03-17 06:40:17,067 INFO L125 PetriNetUnfolderBase]: For 5262/5262 co-relation queries the response was YES. [2025-03-17 06:40:17,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508850 conditions, 251183 events. 202392/251183 cut-off events. For 5262/5262 co-relation queries the response was YES. Maximal size of possible extension queue 6493. Compared 1355507 event pairs, 175958 based on Foata normal form. 6024/225072 useless extension candidates. Maximal degree in co-relation 508847. Up to 166532 conditions per place. [2025-03-17 06:40:18,012 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 57 selfloop transitions, 2 changer transitions 46/110 dead transitions. [2025-03-17 06:40:18,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 110 transitions, 460 flow [2025-03-17 06:40:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:40:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 06:40:18,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2025-03-17 06:40:18,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2025-03-17 06:40:18,014 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 142 flow. Second operand 4 states and 152 transitions. [2025-03-17 06:40:18,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 110 transitions, 460 flow [2025-03-17 06:40:18,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 110 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 06:40:18,016 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 160 flow [2025-03-17 06:40:18,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2025-03-17 06:40:18,017 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2025-03-17 06:40:18,017 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 160 flow [2025-03-17 06:40:18,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:40:18,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:40:18,017 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] [2025-03-17 06:40:18,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:40:18,018 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-03-17 06:40:18,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:40:18,018 INFO L85 PathProgramCache]: Analyzing trace with hash 300883966, now seen corresponding path program 1 times [2025-03-17 06:40:18,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:40:18,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548984327] [2025-03-17 06:40:18,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:40:18,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:40:18,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-17 06:40:18,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-17 06:40:18,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:40:18,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:40:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 06:40:18,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:40:18,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548984327] [2025-03-17 06:40:18,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548984327] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:40:18,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:40:18,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:40:18,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190055140] [2025-03-17 06:40:18,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:40:18,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:40:18,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:40:18,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:40:18,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:40:18,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 88 [2025-03-17 06:40:18,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:40:18,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:40:18,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 88 [2025-03-17 06:40:18,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand