./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:51:42,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:51:42,939 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:51:42,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:51:42,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:51:42,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:51:42,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:51:42,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:51:42,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:51:42,960 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:51:42,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:51:42,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:51:42,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:51:42,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:51:42,960 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:51:42,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:51:42,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:51:42,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:51:42,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:51:42,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:51:42,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:51:42,962 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-jdk21/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 ! overflow) ) 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 -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2025-01-10 06:51:43,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:51:43,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:51:43,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:51:43,181 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:51:43,182 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:51:43,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-01-10 06:51:44,306 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/70fc4e973/8e46bb480e394e8abdec048c9a186716/FLAG98c1951c1 [2025-01-10 06:51:44,542 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:51:44,542 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-01-10 06:51:44,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/70fc4e973/8e46bb480e394e8abdec048c9a186716/FLAG98c1951c1 [2025-01-10 06:51:44,872 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/70fc4e973/8e46bb480e394e8abdec048c9a186716 [2025-01-10 06:51:44,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:51:44,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:51:44,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:51:44,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:51:44,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:51:44,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:51:44" (1/1) ... [2025-01-10 06:51:44,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@951a400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:44, skipping insertion in model container [2025-01-10 06:51:44,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:51:44" (1/1) ... [2025-01-10 06:51:44,894 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:51:45,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:51:45,015 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:51:45,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:51:45,050 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:51:45,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45 WrapperNode [2025-01-10 06:51:45,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:51:45,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:51:45,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:51:45,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:51:45,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,077 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 147 [2025-01-10 06:51:45,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:51:45,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:51:45,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:51:45,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:51:45,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,094 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]. [2025-01-10 06:51:45,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,097 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:51:45,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:51:45,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:51:45,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:51:45,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (1/1) ... [2025-01-10 06:51:45,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:51:45,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:51:45,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:51:45,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:51:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:51:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:51:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:51:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:51:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:51:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:51:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:51:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:51:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:51:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:51:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:51:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:51:45,147 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:51:45,204 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:51:45,205 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:51:45,380 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:51:45,380 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:51:45,553 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:51:45,554 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:51:45,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:51:45 BoogieIcfgContainer [2025-01-10 06:51:45,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:51:45,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:51:45,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:51:45,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:51:45,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:51:44" (1/3) ... [2025-01-10 06:51:45,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dadfcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:51:45, skipping insertion in model container [2025-01-10 06:51:45,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:45" (2/3) ... [2025-01-10 06:51:45,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dadfcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:51:45, skipping insertion in model container [2025-01-10 06:51:45,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:51:45" (3/3) ... [2025-01-10 06:51:45,563 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2025-01-10 06:51:45,575 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:51:45,576 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-5.wvr.c that has 4 procedures, 48 locations, 1 initial locations, 2 loop locations, and 16 error locations. [2025-01-10 06:51:45,576 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:51:45,642 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 06:51:45,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 51 transitions, 123 flow [2025-01-10 06:51:45,725 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2025-01-10 06:51:45,731 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 06:51:45,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 4/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 168 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2025-01-10 06:51:45,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 51 transitions, 123 flow [2025-01-10 06:51:45,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 102 flow [2025-01-10 06:51:45,753 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:51:45,764 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;@20b93b47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:51:45,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2025-01-10 06:51:45,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:51:45,773 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2025-01-10 06:51:45,773 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:51:45,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:51:45,774 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:51:45,774 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:51:45,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:51:45,779 INFO L85 PathProgramCache]: Analyzing trace with hash -124933555, now seen corresponding path program 1 times [2025-01-10 06:51:45,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:51:45,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466113357] [2025-01-10 06:51:45,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:45,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:51:45,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:51:45,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:51:45,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:45,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:45,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:51:45,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466113357] [2025-01-10 06:51:45,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466113357] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:51:45,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:51:45,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:51:46,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416088957] [2025-01-10 06:51:46,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:51:46,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:51:46,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:51:46,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:51:46,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:51:46,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-01-10 06:51:46,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-01-10 06:51:46,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:51:46,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-01-10 06:51:46,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:51:46,586 INFO L124 PetriNetUnfolderBase]: 3956/5895 cut-off events. [2025-01-10 06:51:46,587 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2025-01-10 06:51:46,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12203 conditions, 5895 events. 3956/5895 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 35842 event pairs, 1289 based on Foata normal form. 0/3263 useless extension candidates. Maximal degree in co-relation 11894. Up to 3272 conditions per place. [2025-01-10 06:51:46,628 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 55 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2025-01-10 06:51:46,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 72 transitions, 293 flow [2025-01-10 06:51:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:51:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:51:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2025-01-10 06:51:46,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2025-01-10 06:51:46,640 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2025-01-10 06:51:46,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 72 transitions, 293 flow [2025-01-10 06:51:46,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 283 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 06:51:46,650 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 168 flow [2025-01-10 06:51:46,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2025-01-10 06:51:46,654 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2025-01-10 06:51:46,656 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 168 flow [2025-01-10 06:51:46,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-01-10 06:51:46,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:51:46,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:51:46,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:51:46,657 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:51:46,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:51:46,659 INFO L85 PathProgramCache]: Analyzing trace with hash -124933554, now seen corresponding path program 1 times [2025-01-10 06:51:46,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:51:46,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011281743] [2025-01-10 06:51:46,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:46,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:51:46,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:51:46,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:51:46,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:46,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:46,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:51:46,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011281743] [2025-01-10 06:51:46,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011281743] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:51:46,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:51:46,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:51:46,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837462458] [2025-01-10 06:51:46,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:51:46,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:51:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:51:46,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:51:46,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:51:46,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-01-10 06:51:46,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-01-10 06:51:46,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:51:46,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-01-10 06:51:46,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:51:47,369 INFO L124 PetriNetUnfolderBase]: 5902/8593 cut-off events. [2025-01-10 06:51:47,370 INFO L125 PetriNetUnfolderBase]: For 1474/1474 co-relation queries the response was YES. [2025-01-10 06:51:47,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20433 conditions, 8593 events. 5902/8593 cut-off events. For 1474/1474 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 51642 event pairs, 1257 based on Foata normal form. 352/5979 useless extension candidates. Maximal degree in co-relation 17394. Up to 5702 conditions per place. [2025-01-10 06:51:47,415 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 65 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2025-01-10 06:51:47,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 423 flow [2025-01-10 06:51:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:51:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:51:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-01-10 06:51:47,416 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2025-01-10 06:51:47,416 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 168 flow. Second operand 3 states and 101 transitions. [2025-01-10 06:51:47,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 423 flow [2025-01-10 06:51:47,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:51:47,441 INFO L231 Difference]: Finished difference. Result has 51 places, 61 transitions, 258 flow [2025-01-10 06:51:47,441 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=61} [2025-01-10 06:51:47,442 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2025-01-10 06:51:47,442 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 61 transitions, 258 flow [2025-01-10 06:51:47,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-01-10 06:51:47,442 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:51:47,442 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:51:47,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:51:47,442 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:51:47,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:51:47,443 INFO L85 PathProgramCache]: Analyzing trace with hash -124933553, now seen corresponding path program 1 times [2025-01-10 06:51:47,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:51:47,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104936016] [2025-01-10 06:51:47,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:47,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:51:47,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:51:47,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:51:47,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:47,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:47,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:51:47,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104936016] [2025-01-10 06:51:47,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104936016] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:51:47,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:51:47,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:51:47,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459456919] [2025-01-10 06:51:47,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:51:47,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:51:47,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:51:47,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:51:47,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:51:47,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-01-10 06:51:47,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 61 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-01-10 06:51:47,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:51:47,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-01-10 06:51:47,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:51:47,865 INFO L124 PetriNetUnfolderBase]: 5504/8007 cut-off events. [2025-01-10 06:51:47,866 INFO L125 PetriNetUnfolderBase]: For 2242/2242 co-relation queries the response was YES. [2025-01-10 06:51:47,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21425 conditions, 8007 events. 5504/8007 cut-off events. For 2242/2242 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 48095 event pairs, 3350 based on Foata normal form. 0/5603 useless extension candidates. Maximal degree in co-relation 18550. Up to 7741 conditions per place. [2025-01-10 06:51:47,898 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 50 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2025-01-10 06:51:47,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 350 flow [2025-01-10 06:51:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:51:47,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:51:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2025-01-10 06:51:47,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-01-10 06:51:47,899 INFO L175 Difference]: Start difference. First operand has 51 places, 61 transitions, 258 flow. Second operand 3 states and 68 transitions. [2025-01-10 06:51:47,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 350 flow [2025-01-10 06:51:47,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:51:47,913 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 230 flow [2025-01-10 06:51:47,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2025-01-10 06:51:47,914 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2025-01-10 06:51:47,914 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 230 flow [2025-01-10 06:51:47,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-01-10 06:51:47,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:51:47,914 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:51:47,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:51:47,914 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:51:47,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:51:47,915 INFO L85 PathProgramCache]: Analyzing trace with hash -124933552, now seen corresponding path program 1 times [2025-01-10 06:51:47,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:51:47,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027050695] [2025-01-10 06:51:47,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:47,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:51:47,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:51:47,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:51:47,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:47,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:47,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:51:47,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027050695] [2025-01-10 06:51:47,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027050695] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:51:47,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:51:47,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:51:47,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668812256] [2025-01-10 06:51:47,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:51:47,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:51:47,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:51:47,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:51:47,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:51:47,978 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-01-10 06:51:47,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-01-10 06:51:47,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:51:47,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-01-10 06:51:47,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:51:48,447 INFO L124 PetriNetUnfolderBase]: 6338/9493 cut-off events. [2025-01-10 06:51:48,448 INFO L125 PetriNetUnfolderBase]: For 1946/1946 co-relation queries the response was YES. [2025-01-10 06:51:48,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24619 conditions, 9493 events. 6338/9493 cut-off events. For 1946/1946 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 60623 event pairs, 2385 based on Foata normal form. 332/6845 useless extension candidates. Maximal degree in co-relation 24609. Up to 5324 conditions per place. [2025-01-10 06:51:48,489 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 87 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2025-01-10 06:51:48,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 565 flow [2025-01-10 06:51:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:51:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:51:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2025-01-10 06:51:48,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2025-01-10 06:51:48,492 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 230 flow. Second operand 3 states and 99 transitions. [2025-01-10 06:51:48,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 565 flow [2025-01-10 06:51:48,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 98 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:51:48,495 INFO L231 Difference]: Finished difference. Result has 52 places, 61 transitions, 270 flow [2025-01-10 06:51:48,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=52, PETRI_TRANSITIONS=61} [2025-01-10 06:51:48,497 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2025-01-10 06:51:48,497 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 61 transitions, 270 flow [2025-01-10 06:51:48,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2025-01-10 06:51:48,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:51:48,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:51:48,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:51:48,498 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:51:48,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:51:48,498 INFO L85 PathProgramCache]: Analyzing trace with hash -932071607, now seen corresponding path program 1 times [2025-01-10 06:51:48,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:51:48,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316180723] [2025-01-10 06:51:48,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:51:48,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:51:48,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:51:48,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:48,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:48,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:51:48,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316180723] [2025-01-10 06:51:48,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316180723] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:51:48,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:51:48,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:51:48,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87573352] [2025-01-10 06:51:48,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:51:48,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:51:48,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:51:48,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:51:48,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:51:48,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-01-10 06:51:48,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 61 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-01-10 06:51:48,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:51:48,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-01-10 06:51:48,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:51:49,209 INFO L124 PetriNetUnfolderBase]: 7046/10659 cut-off events. [2025-01-10 06:51:49,210 INFO L125 PetriNetUnfolderBase]: For 3196/3196 co-relation queries the response was YES. [2025-01-10 06:51:49,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29377 conditions, 10659 events. 7046/10659 cut-off events. For 3196/3196 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 69658 event pairs, 1998 based on Foata normal form. 244/7588 useless extension candidates. Maximal degree in co-relation 29365. Up to 6755 conditions per place. [2025-01-10 06:51:49,260 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 87 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2025-01-10 06:51:49,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 100 transitions, 641 flow [2025-01-10 06:51:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:51:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:51:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-01-10 06:51:49,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2025-01-10 06:51:49,262 INFO L175 Difference]: Start difference. First operand has 52 places, 61 transitions, 270 flow. Second operand 3 states and 97 transitions. [2025-01-10 06:51:49,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 100 transitions, 641 flow [2025-01-10 06:51:49,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 100 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:51:49,266 INFO L231 Difference]: Finished difference. Result has 55 places, 65 transitions, 331 flow [2025-01-10 06:51:49,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=55, PETRI_TRANSITIONS=65} [2025-01-10 06:51:49,266 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2025-01-10 06:51:49,266 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 331 flow [2025-01-10 06:51:49,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-01-10 06:51:49,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:51:49,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:51:49,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:51:49,267 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:51:49,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:51:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash -932071608, now seen corresponding path program 1 times [2025-01-10 06:51:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:51:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695039021] [2025-01-10 06:51:49,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:51:49,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:51:49,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:51:49,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:49,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:49,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:51:49,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695039021] [2025-01-10 06:51:49,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695039021] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:51:49,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:51:49,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:51:49,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213640901] [2025-01-10 06:51:49,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:51:49,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:51:49,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:51:49,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:51:49,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:51:49,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-01-10 06:51:49,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-01-10 06:51:49,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:51:49,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-01-10 06:51:49,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:51:49,729 INFO L124 PetriNetUnfolderBase]: 6476/9869 cut-off events. [2025-01-10 06:51:49,730 INFO L125 PetriNetUnfolderBase]: For 5134/5134 co-relation queries the response was YES. [2025-01-10 06:51:49,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28462 conditions, 9869 events. 6476/9869 cut-off events. For 5134/5134 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 65404 event pairs, 4876 based on Foata normal form. 356/7356 useless extension candidates. Maximal degree in co-relation 28447. Up to 9563 conditions per place. [2025-01-10 06:51:49,776 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 52 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2025-01-10 06:51:49,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 409 flow [2025-01-10 06:51:49,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:51:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:51:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2025-01-10 06:51:49,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2025-01-10 06:51:49,778 INFO L175 Difference]: Start difference. First operand has 55 places, 65 transitions, 331 flow. Second operand 3 states and 67 transitions. [2025-01-10 06:51:49,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 409 flow [2025-01-10 06:51:49,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:51:49,780 INFO L231 Difference]: Finished difference. Result has 54 places, 61 transitions, 299 flow [2025-01-10 06:51:49,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=54, PETRI_TRANSITIONS=61} [2025-01-10 06:51:49,781 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2025-01-10 06:51:49,782 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 61 transitions, 299 flow [2025-01-10 06:51:49,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-01-10 06:51:49,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:51:49,782 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:51:49,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:51:49,783 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:51:49,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:51:49,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1256495431, now seen corresponding path program 1 times [2025-01-10 06:51:49,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:51:49,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026383380] [2025-01-10 06:51:49,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:49,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:51:49,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:51:49,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:51:49,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:49,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:49,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:51:49,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026383380] [2025-01-10 06:51:49,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026383380] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:51:49,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892197625] [2025-01-10 06:51:49,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:49,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:51:49,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:51:49,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:51:49,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 06:51:49,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:51:49,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:51:49,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:49,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:49,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:51:49,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:51:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:49,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:51:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:49,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892197625] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:51:49,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:51:49,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-01-10 06:51:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605338266] [2025-01-10 06:51:49,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:51:49,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 06:51:49,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:51:49,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 06:51:49,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:51:49,969 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-01-10 06:51:49,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 61 transitions, 299 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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) [2025-01-10 06:51:49,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:51:49,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-01-10 06:51:49,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:51:51,589 INFO L124 PetriNetUnfolderBase]: 19566/29017 cut-off events. [2025-01-10 06:51:51,590 INFO L125 PetriNetUnfolderBase]: For 14298/14298 co-relation queries the response was YES. [2025-01-10 06:51:51,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81518 conditions, 29017 events. 19566/29017 cut-off events. For 14298/14298 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 201466 event pairs, 762 based on Foata normal form. 866/21705 useless extension candidates. Maximal degree in co-relation 81503. Up to 8318 conditions per place. [2025-01-10 06:51:51,799 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 133 selfloop transitions, 65 changer transitions 0/206 dead transitions. [2025-01-10 06:51:51,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 206 transitions, 1306 flow [2025-01-10 06:51:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:51:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:51:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2025-01-10 06:51:51,801 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7030812324929971 [2025-01-10 06:51:51,801 INFO L175 Difference]: Start difference. First operand has 54 places, 61 transitions, 299 flow. Second operand 7 states and 251 transitions. [2025-01-10 06:51:51,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 206 transitions, 1306 flow [2025-01-10 06:51:51,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 206 transitions, 1305 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:51:51,807 INFO L231 Difference]: Finished difference. Result has 63 places, 119 transitions, 1016 flow [2025-01-10 06:51:51,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1016, PETRI_PLACES=63, PETRI_TRANSITIONS=119} [2025-01-10 06:51:51,808 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2025-01-10 06:51:51,808 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 119 transitions, 1016 flow [2025-01-10 06:51:51,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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) [2025-01-10 06:51:51,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:51:51,808 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:51:51,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 06:51:52,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:51:52,013 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:51:52,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:51:52,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1256495433, now seen corresponding path program 1 times [2025-01-10 06:51:52,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:51:52,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943273942] [2025-01-10 06:51:52,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:52,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:51:52,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:51:52,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:51:52,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:52,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:52,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:51:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943273942] [2025-01-10 06:51:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943273942] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:51:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551658917] [2025-01-10 06:51:52,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:52,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:51:52,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:51:52,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:51:52,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 06:51:52,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:51:52,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:51:52,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:52,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:52,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:51:52,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:51:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:52,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:51:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:52,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551658917] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:51:52,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:51:52,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-01-10 06:51:52,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199423687] [2025-01-10 06:51:52,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:51:52,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 06:51:52,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:51:52,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 06:51:52,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:51:52,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-01-10 06:51:52,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 119 transitions, 1016 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2025-01-10 06:51:52,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:51:52,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-01-10 06:51:52,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:51:56,297 INFO L124 PetriNetUnfolderBase]: 44700/66413 cut-off events. [2025-01-10 06:51:56,297 INFO L125 PetriNetUnfolderBase]: For 148418/148418 co-relation queries the response was YES. [2025-01-10 06:51:56,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235779 conditions, 66413 events. 44700/66413 cut-off events. For 148418/148418 co-relation queries the response was YES. Maximal size of possible extension queue 2514. Compared 506261 event pairs, 2756 based on Foata normal form. 634/50933 useless extension candidates. Maximal degree in co-relation 235759. Up to 15834 conditions per place. [2025-01-10 06:51:56,786 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 380 selfloop transitions, 154 changer transitions 0/542 dead transitions. [2025-01-10 06:51:56,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 542 transitions, 5459 flow [2025-01-10 06:51:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:51:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:51:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 367 transitions. [2025-01-10 06:51:56,788 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7196078431372549 [2025-01-10 06:51:56,788 INFO L175 Difference]: Start difference. First operand has 63 places, 119 transitions, 1016 flow. Second operand 10 states and 367 transitions. [2025-01-10 06:51:56,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 542 transitions, 5459 flow [2025-01-10 06:51:57,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 542 transitions, 5301 flow, removed 79 selfloop flow, removed 0 redundant places. [2025-01-10 06:51:57,852 INFO L231 Difference]: Finished difference. Result has 80 places, 256 transitions, 3203 flow [2025-01-10 06:51:57,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3203, PETRI_PLACES=80, PETRI_TRANSITIONS=256} [2025-01-10 06:51:57,853 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2025-01-10 06:51:57,853 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 256 transitions, 3203 flow [2025-01-10 06:51:57,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2025-01-10 06:51:57,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:51:57,853 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:51:57,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 06:51:58,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:51:58,054 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:51:58,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:51:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1067416129, now seen corresponding path program 1 times [2025-01-10 06:51:58,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:51:58,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378129841] [2025-01-10 06:51:58,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:58,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:51:58,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:51:58,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:51:58,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:58,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:58,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:51:58,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378129841] [2025-01-10 06:51:58,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378129841] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:51:58,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621874768] [2025-01-10 06:51:58,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:51:58,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:51:58,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:51:58,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:51:58,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 06:51:58,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:51:58,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:51:58,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:51:58,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:51:58,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:51:58,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:51:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:58,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:51:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:51:58,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621874768] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:51:58,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:51:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-01-10 06:51:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452135247] [2025-01-10 06:51:58,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:51:58,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 06:51:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:51:58,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 06:51:58,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:51:58,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-01-10 06:51:58,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 256 transitions, 3203 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2025-01-10 06:51:58,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:51:58,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-01-10 06:51:58,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:10,348 INFO L124 PetriNetUnfolderBase]: 96141/145028 cut-off events. [2025-01-10 06:52:10,349 INFO L125 PetriNetUnfolderBase]: For 720434/720434 co-relation queries the response was YES. [2025-01-10 06:52:11,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583347 conditions, 145028 events. 96141/145028 cut-off events. For 720434/720434 co-relation queries the response was YES. Maximal size of possible extension queue 4402. Compared 1227271 event pairs, 18850 based on Foata normal form. 1818/118847 useless extension candidates. Maximal degree in co-relation 583317. Up to 35163 conditions per place. [2025-01-10 06:52:11,932 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 846 selfloop transitions, 72 changer transitions 0/926 dead transitions. [2025-01-10 06:52:11,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 926 transitions, 13772 flow [2025-01-10 06:52:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:52:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:52:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2025-01-10 06:52:11,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7026143790849673 [2025-01-10 06:52:11,935 INFO L175 Difference]: Start difference. First operand has 80 places, 256 transitions, 3203 flow. Second operand 6 states and 215 transitions. [2025-01-10 06:52:11,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 926 transitions, 13772 flow [2025-01-10 06:52:34,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 926 transitions, 13337 flow, removed 216 selfloop flow, removed 1 redundant places. [2025-01-10 06:52:34,185 INFO L231 Difference]: Finished difference. Result has 88 places, 307 transitions, 4270 flow [2025-01-10 06:52:34,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4270, PETRI_PLACES=88, PETRI_TRANSITIONS=307} [2025-01-10 06:52:34,186 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2025-01-10 06:52:34,186 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 307 transitions, 4270 flow [2025-01-10 06:52:34,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2025-01-10 06:52:34,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:34,186 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:52:34,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 06:52:34,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:52:34,391 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:52:34,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1446419482, now seen corresponding path program 1 times [2025-01-10 06:52:34,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:34,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577975563] [2025-01-10 06:52:34,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:34,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:34,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:52:34,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:52:34,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:34,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:34,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:34,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577975563] [2025-01-10 06:52:34,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577975563] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:52:34,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381227714] [2025-01-10 06:52:34,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:34,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:52:34,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:34,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:52:34,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 06:52:34,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:52:34,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:52:34,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:34,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:34,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:52:34,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:52:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:34,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:52:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:52:34,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381227714] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:52:34,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:52:34,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-01-10 06:52:34,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88029995] [2025-01-10 06:52:34,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:52:34,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 06:52:34,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:34,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 06:52:34,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:52:34,559 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2025-01-10 06:52:34,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 307 transitions, 4270 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2025-01-10 06:52:34,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:34,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2025-01-10 06:52:34,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand