./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 1b3f2e76aa91b47c1b0ab3ebb03a5219efabc6e79eff8c780f49eaa0a2d155ad --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:03:47,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:03:48,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:03:48,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:03:48,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:03:48,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:03:48,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:03:48,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:03:48,100 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:03:48,106 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:03:48,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:03:48,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:03:48,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:03:48,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:03:48,108 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:03:48,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:03:48,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:03:48,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:03:48,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:03:48,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:03:48,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:03:48,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:03:48,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:03:48,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:03:48,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:03:48,114 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:03:48,114 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:03:48,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:03:48,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:03:48,115 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:03:48,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:03:48,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:03:48,116 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:03:48,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:03:48,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:48,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:03:48,118 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:03:48,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:03:48,118 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:03:48,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:03:48,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:03:48,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:03:48,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:03:48,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:03:48,120 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b3f2e76aa91b47c1b0ab3ebb03a5219efabc6e79eff8c780f49eaa0a2d155ad [2024-10-12 00:03:48,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:03:48,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:03:48,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:03:48,423 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:03:48,423 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:03:48,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-10-12 00:03:50,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:03:50,208 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:03:50,209 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-10-12 00:03:50,217 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0ba8eeba5/097edb41d5f14cd9bee5a01c4c83baae/FLAG59be2b63f [2024-10-12 00:03:50,578 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0ba8eeba5/097edb41d5f14cd9bee5a01c4c83baae [2024-10-12 00:03:50,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:03:50,582 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:03:50,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:50,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:03:50,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:03:50,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:50,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6004723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50, skipping insertion in model container [2024-10-12 00:03:50,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:50,622 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:03:50,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:50,903 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:03:50,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:50,942 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:03:50,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50 WrapperNode [2024-10-12 00:03:50,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:50,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:50,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:03:50,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:03:50,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:50,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:50,995 INFO L138 Inliner]: procedures = 21, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2024-10-12 00:03:50,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:50,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:03:51,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:03:51,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:03:51,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:51,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:51,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:51,042 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]. [2024-10-12 00:03:51,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:51,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:51,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:51,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:51,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:51,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:51,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:03:51,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:03:51,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:03:51,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:03:51,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (1/1) ... [2024-10-12 00:03:51,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:51,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:51,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:03:51,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:03:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:03:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:03:51,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:03:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:03:51,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:03:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:03:51,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:03:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:03:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:03:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:03:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:03:51,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:03:51,162 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:03:51,253 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:03:51,255 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:03:51,483 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:03:51,483 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:03:51,684 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:03:51,685 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 00:03:51,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:51 BoogieIcfgContainer [2024-10-12 00:03:51,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:03:51,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:03:51,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:03:51,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:03:51,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:03:50" (1/3) ... [2024-10-12 00:03:51,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352142fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:51, skipping insertion in model container [2024-10-12 00:03:51,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:50" (2/3) ... [2024-10-12 00:03:51,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352142fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:51, skipping insertion in model container [2024-10-12 00:03:51,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:51" (3/3) ... [2024-10-12 00:03:51,695 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2024-10-12 00:03:51,713 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:03:51,714 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-12 00:03:51,714 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:03:51,787 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:03:51,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 45 transitions, 111 flow [2024-10-12 00:03:51,865 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2024-10-12 00:03:51,865 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:03:51,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 4/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2024-10-12 00:03:51,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 45 transitions, 111 flow [2024-10-12 00:03:51,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 39 transitions, 90 flow [2024-10-12 00:03:51,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:03:51,891 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;@59a09cc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:03:51,891 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-12 00:03:51,899 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:03:51,900 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-12 00:03:51,900 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-12 00:03:51,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:51,901 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:51,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-12 00:03:51,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -512190440, now seen corresponding path program 1 times [2024-10-12 00:03:51,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:51,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023767687] [2024-10-12 00:03:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:51,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:52,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:52,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023767687] [2024-10-12 00:03:52,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023767687] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:52,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:52,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:03:52,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055315700] [2024-10-12 00:03:52,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:52,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:03:52,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:52,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:03:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:03:52,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-12 00:03:52,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:52,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:52,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-12 00:03:52,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:52,813 INFO L124 PetriNetUnfolderBase]: 1263/2136 cut-off events. [2024-10-12 00:03:52,814 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-10-12 00:03:52,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 2136 events. 1263/2136 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 13846 event pairs, 358 based on Foata normal form. 0/1326 useless extension candidates. Maximal degree in co-relation 3876. Up to 994 conditions per place. [2024-10-12 00:03:52,845 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 33 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-10-12 00:03:52,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 213 flow [2024-10-12 00:03:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:03:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:03:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-12 00:03:52,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7481481481481481 [2024-10-12 00:03:52,863 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 90 flow. Second operand 3 states and 101 transitions. [2024-10-12 00:03:52,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 213 flow [2024-10-12 00:03:52,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 203 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:03:52,877 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 144 flow [2024-10-12 00:03:52,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-10-12 00:03:52,885 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-10-12 00:03:52,885 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 144 flow [2024-10-12 00:03:52,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:52,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:52,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:52,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:03:52,887 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-12 00:03:52,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:52,888 INFO L85 PathProgramCache]: Analyzing trace with hash -512190439, now seen corresponding path program 1 times [2024-10-12 00:03:52,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:52,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622780022] [2024-10-12 00:03:52,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:52,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:53,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:53,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622780022] [2024-10-12 00:03:53,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622780022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:53,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:53,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:03:53,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748729142] [2024-10-12 00:03:53,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:53,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:03:53,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:53,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:03:53,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:03:53,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-12 00:03:53,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:53,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:53,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-12 00:03:53,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:53,409 INFO L124 PetriNetUnfolderBase]: 1974/3284 cut-off events. [2024-10-12 00:03:53,409 INFO L125 PetriNetUnfolderBase]: For 2128/2128 co-relation queries the response was YES. [2024-10-12 00:03:53,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 3284 events. 1974/3284 cut-off events. For 2128/2128 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 20164 event pairs, 358 based on Foata normal form. 194/2998 useless extension candidates. Maximal degree in co-relation 4359. Up to 1653 conditions per place. [2024-10-12 00:03:53,445 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 41 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-10-12 00:03:53,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 303 flow [2024-10-12 00:03:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:03:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:03:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-12 00:03:53,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7481481481481481 [2024-10-12 00:03:53,448 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 144 flow. Second operand 3 states and 101 transitions. [2024-10-12 00:03:53,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 303 flow [2024-10-12 00:03:53,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 64 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:53,463 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 206 flow [2024-10-12 00:03:53,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2024-10-12 00:03:53,465 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-10-12 00:03:53,466 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 206 flow [2024-10-12 00:03:53,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:53,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:53,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:53,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:03:53,467 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-12 00:03:53,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:53,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1466962396, now seen corresponding path program 1 times [2024-10-12 00:03:53,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:53,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108795515] [2024-10-12 00:03:53,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:53,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:53,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108795515] [2024-10-12 00:03:53,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108795515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:53,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:53,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304662240] [2024-10-12 00:03:53,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:53,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:03:53,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:03:53,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:03:53,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-10-12 00:03:53,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-12 00:03:53,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:53,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-10-12 00:03:53,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:53,990 INFO L124 PetriNetUnfolderBase]: 2661/4090 cut-off events. [2024-10-12 00:03:53,990 INFO L125 PetriNetUnfolderBase]: For 3621/4675 co-relation queries the response was YES. [2024-10-12 00:03:54,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11337 conditions, 4090 events. 2661/4090 cut-off events. For 3621/4675 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 24437 event pairs, 756 based on Foata normal form. 4/3591 useless extension candidates. Maximal degree in co-relation 9341. Up to 1838 conditions per place. [2024-10-12 00:03:54,036 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 58 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-10-12 00:03:54,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 425 flow [2024-10-12 00:03:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:03:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:03:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-10-12 00:03:54,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2024-10-12 00:03:54,040 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 206 flow. Second operand 3 states and 92 transitions. [2024-10-12 00:03:54,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 425 flow [2024-10-12 00:03:54,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:54,050 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 214 flow [2024-10-12 00:03:54,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2024-10-12 00:03:54,051 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-10-12 00:03:54,051 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 214 flow [2024-10-12 00:03:54,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-12 00:03:54,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:54,053 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:54,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:03:54,053 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-12 00:03:54,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash -412517145, now seen corresponding path program 1 times [2024-10-12 00:03:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:54,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909915446] [2024-10-12 00:03:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:54,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:54,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:54,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909915446] [2024-10-12 00:03:54,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909915446] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:03:54,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059434728] [2024-10-12 00:03:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:54,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:54,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:54,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:03:54,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:03:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:54,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:03:54,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:03:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:54,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:03:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059434728] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:03:54,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:03:54,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-12 00:03:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769956270] [2024-10-12 00:03:54,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:03:54,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 00:03:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 00:03:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:03:54,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-12 00:03:54,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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) [2024-10-12 00:03:54,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:54,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-12 00:03:54,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:55,248 INFO L124 PetriNetUnfolderBase]: 4322/7547 cut-off events. [2024-10-12 00:03:55,249 INFO L125 PetriNetUnfolderBase]: For 5328/5328 co-relation queries the response was YES. [2024-10-12 00:03:55,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19658 conditions, 7547 events. 4322/7547 cut-off events. For 5328/5328 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 52148 event pairs, 125 based on Foata normal form. 260/7249 useless extension candidates. Maximal degree in co-relation 17802. Up to 2051 conditions per place. [2024-10-12 00:03:55,412 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 85 selfloop transitions, 38 changer transitions 0/141 dead transitions. [2024-10-12 00:03:55,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 141 transitions, 783 flow [2024-10-12 00:03:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:03:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:03:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2024-10-12 00:03:55,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-10-12 00:03:55,416 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 214 flow. Second operand 7 states and 252 transitions. [2024-10-12 00:03:55,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 141 transitions, 783 flow [2024-10-12 00:03:55,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 141 transitions, 777 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:55,423 INFO L231 Difference]: Finished difference. Result has 57 places, 89 transitions, 604 flow [2024-10-12 00:03:55,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=57, PETRI_TRANSITIONS=89} [2024-10-12 00:03:55,424 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-12 00:03:55,424 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 89 transitions, 604 flow [2024-10-12 00:03:55,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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) [2024-10-12 00:03:55,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:55,425 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:55,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 00:03:55,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:55,630 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-12 00:03:55,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1645265699, now seen corresponding path program 1 times [2024-10-12 00:03:55,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:55,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259764430] [2024-10-12 00:03:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:55,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:55,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:55,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:55,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259764430] [2024-10-12 00:03:55,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259764430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:55,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:55,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:55,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116432307] [2024-10-12 00:03:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:55,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:03:55,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:55,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:03:55,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:03:55,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-10-12 00:03:55,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 89 transitions, 604 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-12 00:03:55,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:55,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-10-12 00:03:55,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:56,810 INFO L124 PetriNetUnfolderBase]: 5708/9090 cut-off events. [2024-10-12 00:03:56,813 INFO L125 PetriNetUnfolderBase]: For 23820/23820 co-relation queries the response was YES. [2024-10-12 00:03:56,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30194 conditions, 9090 events. 5708/9090 cut-off events. For 23820/23820 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 61843 event pairs, 1606 based on Foata normal form. 0/8283 useless extension candidates. Maximal degree in co-relation 14725. Up to 4064 conditions per place. [2024-10-12 00:03:56,913 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 102 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-10-12 00:03:56,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 120 transitions, 1037 flow [2024-10-12 00:03:56,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:03:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:03:56,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-12 00:03:56,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-12 00:03:56,917 INFO L175 Difference]: Start difference. First operand has 57 places, 89 transitions, 604 flow. Second operand 3 states and 90 transitions. [2024-10-12 00:03:56,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 120 transitions, 1037 flow [2024-10-12 00:03:56,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 120 transitions, 1025 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:56,953 INFO L231 Difference]: Finished difference. Result has 61 places, 86 transitions, 577 flow [2024-10-12 00:03:56,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=61, PETRI_TRANSITIONS=86} [2024-10-12 00:03:56,956 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-10-12 00:03:56,956 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 86 transitions, 577 flow [2024-10-12 00:03:56,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-12 00:03:56,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:56,957 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:56,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:03:56,957 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-12 00:03:56,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:56,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1041093130, now seen corresponding path program 1 times [2024-10-12 00:03:56,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:56,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418135661] [2024-10-12 00:03:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:56,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:03:57,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418135661] [2024-10-12 00:03:57,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418135661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:57,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:57,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:57,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215075249] [2024-10-12 00:03:57,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:57,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:03:57,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:57,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:03:57,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:03:57,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-12 00:03:57,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 86 transitions, 577 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:57,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:57,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-12 00:03:57,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:57,673 INFO L124 PetriNetUnfolderBase]: 3147/5335 cut-off events. [2024-10-12 00:03:57,673 INFO L125 PetriNetUnfolderBase]: For 20346/20346 co-relation queries the response was YES. [2024-10-12 00:03:57,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17963 conditions, 5335 events. 3147/5335 cut-off events. For 20346/20346 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 37804 event pairs, 1620 based on Foata normal form. 338/4880 useless extension candidates. Maximal degree in co-relation 9988. Up to 4322 conditions per place. [2024-10-12 00:03:57,725 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 53 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2024-10-12 00:03:57,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 579 flow [2024-10-12 00:03:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:03:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:03:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-12 00:03:57,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-12 00:03:57,727 INFO L175 Difference]: Start difference. First operand has 61 places, 86 transitions, 577 flow. Second operand 3 states and 80 transitions. [2024-10-12 00:03:57,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 579 flow [2024-10-12 00:03:57,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:57,741 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 467 flow [2024-10-12 00:03:57,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2024-10-12 00:03:57,742 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-10-12 00:03:57,742 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 467 flow [2024-10-12 00:03:57,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:57,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:57,743 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:57,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:03:57,743 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-12 00:03:57,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:57,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1041093096, now seen corresponding path program 1 times [2024-10-12 00:03:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:57,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252520243] [2024-10-12 00:03:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:57,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:03:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252520243] [2024-10-12 00:03:57,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252520243] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:03:57,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405836354] [2024-10-12 00:03:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:57,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:57,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:57,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:03:57,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:03:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:57,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:03:57,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:03:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:57,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:03:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:03:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405836354] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:03:58,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:03:58,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 2] total 5 [2024-10-12 00:03:58,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874868052] [2024-10-12 00:03:58,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:03:58,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 00:03:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 00:03:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:03:58,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-12 00:03:58,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 467 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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) [2024-10-12 00:03:58,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:58,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-12 00:03:58,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:59,716 INFO L124 PetriNetUnfolderBase]: 7236/14419 cut-off events. [2024-10-12 00:03:59,716 INFO L125 PetriNetUnfolderBase]: For 42618/42618 co-relation queries the response was YES. [2024-10-12 00:03:59,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44938 conditions, 14419 events. 7236/14419 cut-off events. For 42618/42618 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 122826 event pairs, 215 based on Foata normal form. 738/14144 useless extension candidates. Maximal degree in co-relation 44918. Up to 3430 conditions per place. [2024-10-12 00:03:59,864 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 110 selfloop transitions, 52 changer transitions 0/182 dead transitions. [2024-10-12 00:03:59,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 182 transitions, 1453 flow [2024-10-12 00:03:59,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:03:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:03:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-10-12 00:03:59,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2024-10-12 00:03:59,866 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 467 flow. Second operand 7 states and 241 transitions. [2024-10-12 00:03:59,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 182 transitions, 1453 flow [2024-10-12 00:03:59,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 182 transitions, 1452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:59,925 INFO L231 Difference]: Finished difference. Result has 68 places, 117 transitions, 1168 flow [2024-10-12 00:03:59,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1168, PETRI_PLACES=68, PETRI_TRANSITIONS=117} [2024-10-12 00:03:59,926 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2024-10-12 00:03:59,926 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 117 transitions, 1168 flow [2024-10-12 00:03:59,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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) [2024-10-12 00:03:59,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:59,926 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:59,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:04:00,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:00,128 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-12 00:04:00,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:00,128 INFO L85 PathProgramCache]: Analyzing trace with hash -486675324, now seen corresponding path program 1 times [2024-10-12 00:04:00,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:00,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860321134] [2024-10-12 00:04:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:00,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860321134] [2024-10-12 00:04:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860321134] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:04:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058464052] [2024-10-12 00:04:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:00,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:00,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:04:00,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:04:00,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:04:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:00,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:04:00,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:04:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:00,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:04:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:00,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058464052] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:04:00,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:04:00,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 00:04:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42952343] [2024-10-12 00:04:00,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:04:00,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 00:04:00,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:00,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 00:04:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-12 00:04:00,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-12 00:04:00,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 117 transitions, 1168 flow. Second operand has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 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) [2024-10-12 00:04:00,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:00,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-12 00:04:00,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:05,626 INFO L124 PetriNetUnfolderBase]: 23078/46383 cut-off events. [2024-10-12 00:04:05,626 INFO L125 PetriNetUnfolderBase]: For 345814/345814 co-relation queries the response was YES. [2024-10-12 00:04:05,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162303 conditions, 46383 events. 23078/46383 cut-off events. For 345814/345814 co-relation queries the response was YES. Maximal size of possible extension queue 1431. Compared 459748 event pairs, 457 based on Foata normal form. 5582/48384 useless extension candidates. Maximal degree in co-relation 162278. Up to 7197 conditions per place. [2024-10-12 00:04:06,265 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 189 selfloop transitions, 188 changer transitions 0/397 dead transitions. [2024-10-12 00:04:06,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 397 transitions, 4416 flow [2024-10-12 00:04:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 00:04:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-12 00:04:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 393 transitions. [2024-10-12 00:04:06,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.793939393939394 [2024-10-12 00:04:06,268 INFO L175 Difference]: Start difference. First operand has 68 places, 117 transitions, 1168 flow. Second operand 11 states and 393 transitions. [2024-10-12 00:04:06,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 397 transitions, 4416 flow [2024-10-12 00:04:06,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 397 transitions, 4129 flow, removed 142 selfloop flow, removed 1 redundant places. [2024-10-12 00:04:06,825 INFO L231 Difference]: Finished difference. Result has 85 places, 286 transitions, 3961 flow [2024-10-12 00:04:06,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3961, PETRI_PLACES=85, PETRI_TRANSITIONS=286} [2024-10-12 00:04:06,826 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-10-12 00:04:06,826 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 286 transitions, 3961 flow [2024-10-12 00:04:06,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 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) [2024-10-12 00:04:06,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:06,827 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:06,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 00:04:07,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:07,028 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-12 00:04:07,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:07,028 INFO L85 PathProgramCache]: Analyzing trace with hash -449800263, now seen corresponding path program 1 times [2024-10-12 00:04:07,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:07,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484776314] [2024-10-12 00:04:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:07,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:04:07,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484776314] [2024-10-12 00:04:07,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484776314] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:04:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675726797] [2024-10-12 00:04:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:07,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:07,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:04:07,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:04:07,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:04:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:07,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:04:07,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:04:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:07,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:04:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:04:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675726797] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:04:07,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:04:07,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 7 [2024-10-12 00:04:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008496881] [2024-10-12 00:04:07,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:04:07,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 00:04:07,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:07,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 00:04:07,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:04:07,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-12 00:04:07,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 286 transitions, 3961 flow. Second operand has 9 states, 9 states have (on average 21.555555555555557) internal successors, (194), 9 states have internal predecessors, (194), 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) [2024-10-12 00:04:07,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:07,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-12 00:04:07,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:22,082 INFO L124 PetriNetUnfolderBase]: 51537/102787 cut-off events. [2024-10-12 00:04:22,082 INFO L125 PetriNetUnfolderBase]: For 1155304/1155304 co-relation queries the response was YES. [2024-10-12 00:04:22,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431736 conditions, 102787 events. 51537/102787 cut-off events. For 1155304/1155304 co-relation queries the response was YES. Maximal size of possible extension queue 2881. Compared 1117506 event pairs, 1131 based on Foata normal form. 5404/100359 useless extension candidates. Maximal degree in co-relation 431702. Up to 17078 conditions per place. [2024-10-12 00:04:23,467 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 286 selfloop transitions, 447 changer transitions 0/753 dead transitions. [2024-10-12 00:04:23,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 753 transitions, 11557 flow [2024-10-12 00:04:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 00:04:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-12 00:04:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 317 transitions. [2024-10-12 00:04:23,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.782716049382716 [2024-10-12 00:04:23,470 INFO L175 Difference]: Start difference. First operand has 85 places, 286 transitions, 3961 flow. Second operand 9 states and 317 transitions. [2024-10-12 00:04:23,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 753 transitions, 11557 flow [2024-10-12 00:04:30,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 753 transitions, 10804 flow, removed 375 selfloop flow, removed 1 redundant places. [2024-10-12 00:04:30,975 INFO L231 Difference]: Finished difference. Result has 98 places, 646 transitions, 11041 flow [2024-10-12 00:04:30,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11041, PETRI_PLACES=98, PETRI_TRANSITIONS=646} [2024-10-12 00:04:30,977 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-10-12 00:04:30,977 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 646 transitions, 11041 flow [2024-10-12 00:04:30,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.555555555555557) internal successors, (194), 9 states have internal predecessors, (194), 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) [2024-10-12 00:04:30,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:30,977 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:30,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 00:04:31,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-12 00:04:31,182 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-12 00:04:31,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash 207178366, now seen corresponding path program 1 times [2024-10-12 00:04:31,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:31,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878279740] [2024-10-12 00:04:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:31,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:31,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878279740] [2024-10-12 00:04:31,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878279740] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:04:31,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74930898] [2024-10-12 00:04:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:31,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:04:31,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:04:31,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:04:31,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:04:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:31,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:04:31,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:04:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:31,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:04:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:31,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74930898] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:04:31,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:04:31,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-12 00:04:31,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473534358] [2024-10-12 00:04:31,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:04:31,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 00:04:31,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:31,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 00:04:31,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:04:31,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-12 00:04:31,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 646 transitions, 11041 flow. Second operand has 15 states, 15 states have (on average 20.8) internal successors, (312), 15 states have internal predecessors, (312), 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) [2024-10-12 00:04:31,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:31,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-12 00:04:31,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand