./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:44:08,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:44:08,224 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:44:08,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:44:08,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:44:08,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:44:08,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:44:08,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:44:08,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:44:08,297 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:44:08,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:44:08,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:44:08,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:44:08,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:44:08,299 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:44:08,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:44:08,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:44:08,302 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:44:08,303 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:44:08,303 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:44:08,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:44:08,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:44:08,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:44:08,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:44:08,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:44:08,306 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:44:08,306 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:44:08,306 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:44:08,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:44:08,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:44:08,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:44:08,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:44:08,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:44:08,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:44:08,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:44:08,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:44:08,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:44:08,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:44:08,309 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:44:08,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:44:08,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:44:08,312 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:44:08,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:44:08,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:44:08,312 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-11-12 20:44:08,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:44:08,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:44:08,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:44:08,509 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:44:08,509 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:44:08,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-12 20:44:09,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:44:09,968 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:44:09,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-12 20:44:09,976 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0b29596/c035fbbdcdba441aaed1e22e80c03144/FLAGd46f39e43 [2024-11-12 20:44:09,987 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0b29596/c035fbbdcdba441aaed1e22e80c03144 [2024-11-12 20:44:09,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:44:09,991 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:44:09,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:44:09,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:44:10,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:44:10,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:44:09" (1/1) ... [2024-11-12 20:44:10,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd96a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10, skipping insertion in model container [2024-11-12 20:44:10,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:44:09" (1/1) ... [2024-11-12 20:44:10,021 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:44:10,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:44:10,173 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:44:10,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:44:10,201 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:44:10,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10 WrapperNode [2024-11-12 20:44:10,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:44:10,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:44:10,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:44:10,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:44:10,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,227 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2024-11-12 20:44:10,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:44:10,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:44:10,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:44:10,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:44:10,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,237 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,248 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]. [2024-11-12 20:44:10,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:44:10,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:44:10,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:44:10,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:44:10,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (1/1) ... [2024-11-12 20:44:10,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:44:10,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:10,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 20:44:10,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 20:44:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:44:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:44:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:44:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:44:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:44:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:44:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:44:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:44:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 20:44:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 20:44:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:44:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:44:10,392 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:44:10,535 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:44:10,537 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:44:10,812 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:44:10,812 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:44:10,995 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:44:10,995 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:44:10,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:44:10 BoogieIcfgContainer [2024-11-12 20:44:10,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:44:10,997 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:44:11,001 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:44:11,004 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:44:11,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:44:09" (1/3) ... [2024-11-12 20:44:11,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b60b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:44:11, skipping insertion in model container [2024-11-12 20:44:11,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:10" (2/3) ... [2024-11-12 20:44:11,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b60b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:44:11, skipping insertion in model container [2024-11-12 20:44:11,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:44:10" (3/3) ... [2024-11-12 20:44:11,010 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-11-12 20:44:11,025 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:44:11,025 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-12 20:44:11,025 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:44:11,076 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 20:44:11,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 51 transitions, 123 flow [2024-11-12 20:44:11,131 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-11-12 20:44:11,132 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:44:11,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 4/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 175 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-11-12 20:44:11,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 51 transitions, 123 flow [2024-11-12 20:44:11,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 102 flow [2024-11-12 20:44:11,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:44:11,156 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;@1a636389, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:44:11,157 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-12 20:44:11,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:44:11,167 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-12 20:44:11,168 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:44:11,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:11,169 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:11,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:11,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash -227874788, now seen corresponding path program 1 times [2024-11-12 20:44:11,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:11,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555960014] [2024-11-12 20:44:11,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:11,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:11,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:11,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555960014] [2024-11-12 20:44:11,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555960014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:11,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:11,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:44:11,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131281690] [2024-11-12 20:44:11,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:11,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:11,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:11,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:11,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:11,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:11,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:11,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:11,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:12,016 INFO L124 PetriNetUnfolderBase]: 3956/5895 cut-off events. [2024-11-12 20:44:12,017 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2024-11-12 20:44:12,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12203 conditions, 5895 events. 3956/5895 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 35745 event pairs, 1293 based on Foata normal form. 0/3266 useless extension candidates. Maximal degree in co-relation 11894. Up to 3272 conditions per place. [2024-11-12 20:44:12,049 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 55 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-11-12 20:44:12,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 72 transitions, 293 flow [2024-11-12 20:44:12,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:12,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:12,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-12 20:44:12,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-11-12 20:44:12,060 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-11-12 20:44:12,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 72 transitions, 293 flow [2024-11-12 20:44:12,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 283 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:44:12,069 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 168 flow [2024-11-12 20:44:12,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-11-12 20:44:12,074 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2024-11-12 20:44:12,075 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 168 flow [2024-11-12 20:44:12,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:12,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:12,075 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:12,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:44:12,076 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:12,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash -227874751, now seen corresponding path program 1 times [2024-11-12 20:44:12,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:12,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014051299] [2024-11-12 20:44:12,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:12,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014051299] [2024-11-12 20:44:12,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014051299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:12,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:12,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:44:12,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456175878] [2024-11-12 20:44:12,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:12,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:12,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:12,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:12,193 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:12,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:12,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:12,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:12,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:12,742 INFO L124 PetriNetUnfolderBase]: 5902/8593 cut-off events. [2024-11-12 20:44:12,742 INFO L125 PetriNetUnfolderBase]: For 1626/1626 co-relation queries the response was YES. [2024-11-12 20:44:12,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20433 conditions, 8593 events. 5902/8593 cut-off events. For 1626/1626 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 51562 event pairs, 1285 based on Foata normal form. 352/5994 useless extension candidates. Maximal degree in co-relation 17726. Up to 5702 conditions per place. [2024-11-12 20:44:12,792 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 65 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-11-12 20:44:12,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 423 flow [2024-11-12 20:44:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-12 20:44:12,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2024-11-12 20:44:12,794 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 168 flow. Second operand 3 states and 101 transitions. [2024-11-12 20:44:12,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 423 flow [2024-11-12 20:44:12,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:44:12,821 INFO L231 Difference]: Finished difference. Result has 51 places, 61 transitions, 258 flow [2024-11-12 20:44:12,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=61} [2024-11-12 20:44:12,822 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-11-12 20:44:12,822 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 61 transitions, 258 flow [2024-11-12 20:44:12,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:12,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:12,822 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:12,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:44:12,823 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:12,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash -227874749, now seen corresponding path program 1 times [2024-11-12 20:44:12,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:12,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020830293] [2024-11-12 20:44:12,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:12,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:12,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:12,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020830293] [2024-11-12 20:44:12,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020830293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:12,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:12,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:44:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993026484] [2024-11-12 20:44:12,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:12,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:12,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:12,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:12,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:12,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 61 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:12,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:12,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:12,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:13,320 INFO L124 PetriNetUnfolderBase]: 5504/8013 cut-off events. [2024-11-12 20:44:13,321 INFO L125 PetriNetUnfolderBase]: For 2212/2212 co-relation queries the response was YES. [2024-11-12 20:44:13,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21509 conditions, 8013 events. 5504/8013 cut-off events. For 2212/2212 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 48137 event pairs, 3350 based on Foata normal form. 0/5618 useless extension candidates. Maximal degree in co-relation 18630. Up to 7747 conditions per place. [2024-11-12 20:44:13,351 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 50 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-11-12 20:44:13,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 352 flow [2024-11-12 20:44:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-12 20:44:13,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-12 20:44:13,355 INFO L175 Difference]: Start difference. First operand has 51 places, 61 transitions, 258 flow. Second operand 3 states and 68 transitions. [2024-11-12 20:44:13,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 352 flow [2024-11-12 20:44:13,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:44:13,386 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 230 flow [2024-11-12 20:44:13,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2024-11-12 20:44:13,387 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2024-11-12 20:44:13,387 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 230 flow [2024-11-12 20:44:13,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:13,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:13,388 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:13,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:44:13,388 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:13,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash -227874786, now seen corresponding path program 1 times [2024-11-12 20:44:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197861189] [2024-11-12 20:44:13,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:13,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:13,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197861189] [2024-11-12 20:44:13,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197861189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:13,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:13,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:44:13,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852152170] [2024-11-12 20:44:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:13,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:13,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:13,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:13,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:13,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:13,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:13,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:13,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:13,861 INFO L124 PetriNetUnfolderBase]: 5106/7449 cut-off events. [2024-11-12 20:44:13,862 INFO L125 PetriNetUnfolderBase]: For 1036/1036 co-relation queries the response was YES. [2024-11-12 20:44:13,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19159 conditions, 7449 events. 5106/7449 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 44440 event pairs, 3136 based on Foata normal form. 0/5063 useless extension candidates. Maximal degree in co-relation 19149. Up to 7195 conditions per place. [2024-11-12 20:44:13,888 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 48 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-11-12 20:44:13,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 57 transitions, 320 flow [2024-11-12 20:44:13,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-12 20:44:13,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-11-12 20:44:13,890 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 230 flow. Second operand 3 states and 67 transitions. [2024-11-12 20:44:13,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 57 transitions, 320 flow [2024-11-12 20:44:13,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:13,892 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 223 flow [2024-11-12 20:44:13,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2024-11-12 20:44:13,892 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2024-11-12 20:44:13,892 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 223 flow [2024-11-12 20:44:13,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:13,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:13,893 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:13,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:44:13,893 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:13,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:13,894 INFO L85 PathProgramCache]: Analyzing trace with hash -227874785, now seen corresponding path program 1 times [2024-11-12 20:44:13,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:13,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198718166] [2024-11-12 20:44:13,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:13,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:13,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:13,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198718166] [2024-11-12 20:44:13,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198718166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:13,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:13,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:44:13,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190908724] [2024-11-12 20:44:13,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:13,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:13,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:13,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:13,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:13,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:13,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:13,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:13,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:13,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:14,512 INFO L124 PetriNetUnfolderBase]: 6094/9139 cut-off events. [2024-11-12 20:44:14,512 INFO L125 PetriNetUnfolderBase]: For 1928/1928 co-relation queries the response was YES. [2024-11-12 20:44:14,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23650 conditions, 9139 events. 6094/9139 cut-off events. For 1928/1928 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 57878 event pairs, 2367 based on Foata normal form. 332/6702 useless extension candidates. Maximal degree in co-relation 23639. Up to 4976 conditions per place. [2024-11-12 20:44:14,558 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 85 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-12 20:44:14,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 96 transitions, 554 flow [2024-11-12 20:44:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-12 20:44:14,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2024-11-12 20:44:14,561 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 223 flow. Second operand 3 states and 97 transitions. [2024-11-12 20:44:14,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 96 transitions, 554 flow [2024-11-12 20:44:14,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:14,565 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 259 flow [2024-11-12 20:44:14,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2024-11-12 20:44:14,566 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2024-11-12 20:44:14,567 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 259 flow [2024-11-12 20:44:14,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:14,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:14,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:14,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:44:14,568 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:14,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash -958908139, now seen corresponding path program 1 times [2024-11-12 20:44:14,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:14,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128144925] [2024-11-12 20:44:14,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:14,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:14,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:14,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128144925] [2024-11-12 20:44:14,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128144925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:14,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:14,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:44:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872905157] [2024-11-12 20:44:14,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:14,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:14,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:14,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:14,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:14,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:14,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:14,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:14,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:14,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:15,137 INFO L124 PetriNetUnfolderBase]: 6694/10149 cut-off events. [2024-11-12 20:44:15,138 INFO L125 PetriNetUnfolderBase]: For 3166/3166 co-relation queries the response was YES. [2024-11-12 20:44:15,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27746 conditions, 10149 events. 6694/10149 cut-off events. For 3166/3166 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 66089 event pairs, 1906 based on Foata normal form. 232/7367 useless extension candidates. Maximal degree in co-relation 27733. Up to 6461 conditions per place. [2024-11-12 20:44:15,181 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 83 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2024-11-12 20:44:15,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 96 transitions, 610 flow [2024-11-12 20:44:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:15,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-12 20:44:15,183 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6209150326797386 [2024-11-12 20:44:15,183 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 259 flow. Second operand 3 states and 95 transitions. [2024-11-12 20:44:15,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 96 transitions, 610 flow [2024-11-12 20:44:15,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 96 transitions, 605 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:15,186 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 320 flow [2024-11-12 20:44:15,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2024-11-12 20:44:15,187 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-11-12 20:44:15,187 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 320 flow [2024-11-12 20:44:15,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:15,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:15,188 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:15,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:44:15,188 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:15,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:15,189 INFO L85 PathProgramCache]: Analyzing trace with hash -958908140, now seen corresponding path program 1 times [2024-11-12 20:44:15,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:15,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117415274] [2024-11-12 20:44:15,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:15,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:15,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:15,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117415274] [2024-11-12 20:44:15,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117415274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:15,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:44:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942733855] [2024-11-12 20:44:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:15,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:15,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:15,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:15,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:15,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:15,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:15,663 INFO L124 PetriNetUnfolderBase]: 6148/9389 cut-off events. [2024-11-12 20:44:15,663 INFO L125 PetriNetUnfolderBase]: For 5020/5020 co-relation queries the response was YES. [2024-11-12 20:44:15,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26881 conditions, 9389 events. 6148/9389 cut-off events. For 5020/5020 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 61811 event pairs, 4670 based on Foata normal form. 344/7141 useless extension candidates. Maximal degree in co-relation 26865. Up to 9089 conditions per place. [2024-11-12 20:44:15,715 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 50 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-11-12 20:44:15,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 394 flow [2024-11-12 20:44:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-12 20:44:15,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-11-12 20:44:15,716 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 320 flow. Second operand 3 states and 66 transitions. [2024-11-12 20:44:15,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 394 flow [2024-11-12 20:44:15,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:44:15,719 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 288 flow [2024-11-12 20:44:15,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2024-11-12 20:44:15,720 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-11-12 20:44:15,720 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 288 flow [2024-11-12 20:44:15,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:15,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:15,720 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:15,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:44:15,721 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:15,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:15,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1967581049, now seen corresponding path program 1 times [2024-11-12 20:44:15,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:15,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779062402] [2024-11-12 20:44:15,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:15,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:15,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:15,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779062402] [2024-11-12 20:44:15,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779062402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:15,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:15,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:44:15,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675853418] [2024-11-12 20:44:15,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:15,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:15,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:15,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:15,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:15,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:15,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-12 20:44:15,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:15,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:15,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:16,162 INFO L124 PetriNetUnfolderBase]: 5455/8364 cut-off events. [2024-11-12 20:44:16,163 INFO L125 PetriNetUnfolderBase]: For 3732/3732 co-relation queries the response was YES. [2024-11-12 20:44:16,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23119 conditions, 8364 events. 5455/8364 cut-off events. For 3732/3732 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 54802 event pairs, 4211 based on Foata normal form. 162/6270 useless extension candidates. Maximal degree in co-relation 23103. Up to 8082 conditions per place. [2024-11-12 20:44:16,197 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 46 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2024-11-12 20:44:16,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 55 transitions, 350 flow [2024-11-12 20:44:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-12 20:44:16,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42483660130718953 [2024-11-12 20:44:16,198 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 288 flow. Second operand 3 states and 65 transitions. [2024-11-12 20:44:16,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 55 transitions, 350 flow [2024-11-12 20:44:16,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:16,200 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 257 flow [2024-11-12 20:44:16,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-11-12 20:44:16,201 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-11-12 20:44:16,201 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 257 flow [2024-11-12 20:44:16,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-12 20:44:16,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:16,202 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:16,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:44:16,202 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:16,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1967581013, now seen corresponding path program 1 times [2024-11-12 20:44:16,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:16,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081153625] [2024-11-12 20:44:16,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:16,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:16,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:16,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081153625] [2024-11-12 20:44:16,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081153625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:16,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930742553] [2024-11-12 20:44:16,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:16,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:16,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:16,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:44:16,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:44:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:16,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:44:16,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:16,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:16,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930742553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:16,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:16,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-12 20:44:16,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366590030] [2024-11-12 20:44:16,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:16,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:44:16,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:44:16,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:44:16,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:16,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:16,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:16,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:16,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:17,966 INFO L124 PetriNetUnfolderBase]: 17703/26404 cut-off events. [2024-11-12 20:44:17,967 INFO L125 PetriNetUnfolderBase]: For 12258/12258 co-relation queries the response was YES. [2024-11-12 20:44:18,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72600 conditions, 26404 events. 17703/26404 cut-off events. For 12258/12258 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 182917 event pairs, 660 based on Foata normal form. 538/20027 useless extension candidates. Maximal degree in co-relation 72583. Up to 6927 conditions per place. [2024-11-12 20:44:18,133 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 124 selfloop transitions, 61 changer transitions 0/193 dead transitions. [2024-11-12 20:44:18,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 193 transitions, 1196 flow [2024-11-12 20:44:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:44:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:44:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-11-12 20:44:18,135 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6610644257703081 [2024-11-12 20:44:18,135 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 257 flow. Second operand 7 states and 236 transitions. [2024-11-12 20:44:18,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 193 transitions, 1196 flow [2024-11-12 20:44:18,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 193 transitions, 1195 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:18,139 INFO L231 Difference]: Finished difference. Result has 62 places, 109 transitions, 898 flow [2024-11-12 20:44:18,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=898, PETRI_PLACES=62, PETRI_TRANSITIONS=109} [2024-11-12 20:44:18,140 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-11-12 20:44:18,140 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 109 transitions, 898 flow [2024-11-12 20:44:18,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:18,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:18,141 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:18,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:44:18,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:18,344 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:18,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:18,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1967581015, now seen corresponding path program 1 times [2024-11-12 20:44:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:18,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459657557] [2024-11-12 20:44:18,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:18,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:18,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:18,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459657557] [2024-11-12 20:44:18,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459657557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:18,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852223053] [2024-11-12 20:44:18,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:18,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:18,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:18,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:44:18,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:44:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:18,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:44:18,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:18,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:18,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852223053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:18,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:18,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-12 20:44:18,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467021463] [2024-11-12 20:44:18,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:18,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 20:44:18,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:18,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:44:18,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:44:18,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:18,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 109 transitions, 898 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:18,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:18,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:18,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:23,029 INFO L124 PetriNetUnfolderBase]: 40352/60437 cut-off events. [2024-11-12 20:44:23,029 INFO L125 PetriNetUnfolderBase]: For 121372/121372 co-relation queries the response was YES. [2024-11-12 20:44:23,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206191 conditions, 60437 events. 40352/60437 cut-off events. For 121372/121372 co-relation queries the response was YES. Maximal size of possible extension queue 2310. Compared 461260 event pairs, 2578 based on Foata normal form. 550/46982 useless extension candidates. Maximal degree in co-relation 206169. Up to 13948 conditions per place. [2024-11-12 20:44:23,538 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 369 selfloop transitions, 130 changer transitions 0/507 dead transitions. [2024-11-12 20:44:23,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 507 transitions, 4939 flow [2024-11-12 20:44:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:44:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:44:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 343 transitions. [2024-11-12 20:44:23,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6725490196078432 [2024-11-12 20:44:23,544 INFO L175 Difference]: Start difference. First operand has 62 places, 109 transitions, 898 flow. Second operand 10 states and 343 transitions. [2024-11-12 20:44:23,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 507 transitions, 4939 flow [2024-11-12 20:44:24,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 507 transitions, 4781 flow, removed 79 selfloop flow, removed 0 redundant places. [2024-11-12 20:44:24,404 INFO L231 Difference]: Finished difference. Result has 79 places, 224 transitions, 2677 flow [2024-11-12 20:44:24,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2677, PETRI_PLACES=79, PETRI_TRANSITIONS=224} [2024-11-12 20:44:24,405 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-11-12 20:44:24,405 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 224 transitions, 2677 flow [2024-11-12 20:44:24,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:24,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:24,405 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:24,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:44:24,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-12 20:44:24,607 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:24,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:24,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1071724147, now seen corresponding path program 1 times [2024-11-12 20:44:24,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:24,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434043770] [2024-11-12 20:44:24,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:24,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:24,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:24,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434043770] [2024-11-12 20:44:24,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434043770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:24,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023396073] [2024-11-12 20:44:24,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:24,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:24,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:24,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:44:24,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:44:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:24,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:44:24,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:24,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:24,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023396073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:24,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:24,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-12 20:44:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169806482] [2024-11-12 20:44:24,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:24,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:44:24,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:44:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:44:24,756 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:24,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 224 transitions, 2677 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:24,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:24,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:24,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:37,496 INFO L124 PetriNetUnfolderBase]: 84044/127977 cut-off events. [2024-11-12 20:44:37,497 INFO L125 PetriNetUnfolderBase]: For 563998/563998 co-relation queries the response was YES. [2024-11-12 20:44:38,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483145 conditions, 127977 events. 84044/127977 cut-off events. For 563998/563998 co-relation queries the response was YES. Maximal size of possible extension queue 3887. Compared 1086076 event pairs, 17744 based on Foata normal form. 1458/106317 useless extension candidates. Maximal degree in co-relation 483113. Up to 30891 conditions per place. [2024-11-12 20:44:38,550 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 703 selfloop transitions, 72 changer transitions 0/783 dead transitions. [2024-11-12 20:44:38,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 783 transitions, 11132 flow [2024-11-12 20:44:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:44:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:44:38,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-11-12 20:44:38,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6535947712418301 [2024-11-12 20:44:38,552 INFO L175 Difference]: Start difference. First operand has 79 places, 224 transitions, 2677 flow. Second operand 6 states and 200 transitions. [2024-11-12 20:44:38,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 783 transitions, 11132 flow [2024-11-12 20:44:45,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 783 transitions, 10753 flow, removed 188 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:45,959 INFO L231 Difference]: Finished difference. Result has 87 places, 275 transitions, 3734 flow [2024-11-12 20:44:45,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2460, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3734, PETRI_PLACES=87, PETRI_TRANSITIONS=275} [2024-11-12 20:44:45,960 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2024-11-12 20:44:45,964 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 275 transitions, 3734 flow [2024-11-12 20:44:45,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:45,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:45,965 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:45,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:44:46,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:46,166 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:44:46,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash 555473072, now seen corresponding path program 1 times [2024-11-12 20:44:46,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:46,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69403250] [2024-11-12 20:44:46,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:46,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:44:46,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:46,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69403250] [2024-11-12 20:44:46,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69403250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:46,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:46,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:44:46,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421130987] [2024-11-12 20:44:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:46,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:46,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:46,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:46,235 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:44:46,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 275 transitions, 3734 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-12 20:44:46,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:46,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:44:46,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:56,582 INFO L124 PetriNetUnfolderBase]: 65213/99458 cut-off events. [2024-11-12 20:44:56,582 INFO L125 PetriNetUnfolderBase]: For 616250/616250 co-relation queries the response was YES. [2024-11-12 20:44:57,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383148 conditions, 99458 events. 65213/99458 cut-off events. For 616250/616250 co-relation queries the response was YES. Maximal size of possible extension queue 3008. Compared 836098 event pairs, 47053 based on Foata normal form. 7150/88458 useless extension candidates. Maximal degree in co-relation 383111. Up to 94696 conditions per place. [2024-11-12 20:44:57,360 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 248 selfloop transitions, 1 changer transitions 0/257 dead transitions. [2024-11-12 20:44:57,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 257 transitions, 4048 flow [2024-11-12 20:44:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:57,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-12 20:44:57,361 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-11-12 20:44:57,361 INFO L175 Difference]: Start difference. First operand has 87 places, 275 transitions, 3734 flow. Second operand 3 states and 63 transitions. [2024-11-12 20:44:57,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 257 transitions, 4048 flow [2024-11-12 20:45:02,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 257 transitions, 4048 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:45:02,068 INFO L231 Difference]: Finished difference. Result has 87 places, 257 transitions, 3552 flow [2024-11-12 20:45:02,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3552, PETRI_PLACES=87, PETRI_TRANSITIONS=257} [2024-11-12 20:45:02,069 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2024-11-12 20:45:02,069 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 257 transitions, 3552 flow [2024-11-12 20:45:02,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-12 20:45:02,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:02,069 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:02,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:45:02,069 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-12 20:45:02,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash 170225164, now seen corresponding path program 1 times [2024-11-12 20:45:02,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:02,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36940909] [2024-11-12 20:45:02,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:02,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 20:45:02,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:02,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36940909] [2024-11-12 20:45:02,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36940909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:02,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353706958] [2024-11-12 20:45:02,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:02,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:02,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:02,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:45:02,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:45:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:02,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:45:02,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 20:45:02,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 20:45:02,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353706958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:02,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:02,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-12 20:45:02,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051908535] [2024-11-12 20:45:02,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:02,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:45:02,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:02,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:45:02,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:45:02,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-12 20:45:02,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 257 transitions, 3552 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-11-12 20:45:02,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:02,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-12 20:45:02,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand