./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d 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-1.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 faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:10:15,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:10:15,887 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:10:15,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:10:15,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:10:15,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:10:15,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:10:15,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:10:15,927 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:10:15,929 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:10:15,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:10:15,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:10:15,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:10:15,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:10:15,933 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:10:15,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:10:15,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:10:15,934 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:10:15,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:10:15,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:10:15,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:10:15,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:10:15,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:10:15,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:10:15,936 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:10:15,936 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:10:15,936 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:10:15,937 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:10:15,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:10:15,937 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:10:15,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:10:15,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:10:15,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:10:15,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:10:15,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:10:15,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:10:15,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:10:15,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:10:15,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:10:15,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:10:15,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:10:15,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:10:15,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:10:15,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:10:15,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2024-11-09 15:10:16,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:10:16,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:10:16,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:10:16,226 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:10:16,227 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:10:16,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-11-09 15:10:17,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:10:17,917 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:10:17,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-11-09 15:10:17,925 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94338d616/59420300b68347d78fc20998c3a655e3/FLAGab45933be [2024-11-09 15:10:17,939 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94338d616/59420300b68347d78fc20998c3a655e3 [2024-11-09 15:10:17,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:10:17,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:10:17,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:10:17,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:10:17,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:10:17,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:10:17" (1/1) ... [2024-11-09 15:10:17,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b33ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:17, skipping insertion in model container [2024-11-09 15:10:17,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:10:17" (1/1) ... [2024-11-09 15:10:17,983 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:10:18,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:10:18,245 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:10:18,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:10:18,321 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:10:18,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18 WrapperNode [2024-11-09 15:10:18,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:10:18,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:10:18,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:10:18,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:10:18,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,398 INFO L138 Inliner]: procedures = 22, calls = 32, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 397 [2024-11-09 15:10:18,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:10:18,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:10:18,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:10:18,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:10:18,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,418 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,441 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 15:10:18,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,456 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,461 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:10:18,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:10:18,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:10:18,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:10:18,473 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (1/1) ... [2024-11-09 15:10:18,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:10:18,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:18,509 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) [2024-11-09 15:10:18,513 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 [2024-11-09 15:10:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:10:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:10:18,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:10:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:10:18,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:10:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:10:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:10:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:10:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:10:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:10:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:10:18,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:10:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:10:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:10:18,567 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:10:18,718 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:10:18,720 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:10:19,482 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:10:19,483 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:10:19,877 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:10:19,877 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 15:10:19,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:10:19 BoogieIcfgContainer [2024-11-09 15:10:19,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:10:19,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:10:19,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:10:19,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:10:19,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:10:17" (1/3) ... [2024-11-09 15:10:19,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496bec03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:10:19, skipping insertion in model container [2024-11-09 15:10:19,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:10:18" (2/3) ... [2024-11-09 15:10:19,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496bec03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:10:19, skipping insertion in model container [2024-11-09 15:10:19,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:10:19" (3/3) ... [2024-11-09 15:10:19,888 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2024-11-09 15:10:19,905 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:10:19,905 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2024-11-09 15:10:19,905 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:10:19,999 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:10:20,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 374 flow [2024-11-09 15:10:20,117 INFO L124 PetriNetUnfolderBase]: 21/178 cut-off events. [2024-11-09 15:10:20,118 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:10:20,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 21/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 838 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2024-11-09 15:10:20,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 374 flow [2024-11-09 15:10:20,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 176 transitions, 361 flow [2024-11-09 15:10:20,145 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:10:20,151 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;@6d076824, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:10:20,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2024-11-09 15:10:20,154 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:10:20,154 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:10:20,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:10:20,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:20,155 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:10:20,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:20,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1245782, now seen corresponding path program 1 times [2024-11-09 15:10:20,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:20,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496968502] [2024-11-09 15:10:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:20,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:20,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:20,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496968502] [2024-11-09 15:10:20,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496968502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:20,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:20,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:10:20,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624797840] [2024-11-09 15:10:20,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:20,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:10:20,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:10:20,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:10:20,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-11-09 15:10:20,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 176 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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) [2024-11-09 15:10:20,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:20,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-11-09 15:10:20,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:21,332 INFO L124 PetriNetUnfolderBase]: 2273/5775 cut-off events. [2024-11-09 15:10:21,332 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-09 15:10:21,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9099 conditions, 5775 events. 2273/5775 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53618 event pairs, 1252 based on Foata normal form. 1/4394 useless extension candidates. Maximal degree in co-relation 8938. Up to 3254 conditions per place. [2024-11-09 15:10:21,387 INFO L140 encePairwiseOnDemand]: 174/180 looper letters, 60 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2024-11-09 15:10:21,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 179 transitions, 495 flow [2024-11-09 15:10:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:10:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:10:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 534 transitions. [2024-11-09 15:10:21,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2024-11-09 15:10:21,445 INFO L175 Difference]: Start difference. First operand has 162 places, 176 transitions, 361 flow. Second operand 4 states and 534 transitions. [2024-11-09 15:10:21,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 179 transitions, 495 flow [2024-11-09 15:10:21,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 179 transitions, 490 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:10:21,457 INFO L231 Difference]: Finished difference. Result has 164 places, 179 transitions, 385 flow [2024-11-09 15:10:21,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=164, PETRI_TRANSITIONS=179} [2024-11-09 15:10:21,463 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 2 predicate places. [2024-11-09 15:10:21,464 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 179 transitions, 385 flow [2024-11-09 15:10:21,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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) [2024-11-09 15:10:21,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:21,464 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:10:21,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:10:21,465 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:21,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1540361593, now seen corresponding path program 1 times [2024-11-09 15:10:21,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:21,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740493724] [2024-11-09 15:10:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:21,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:21,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:21,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740493724] [2024-11-09 15:10:21,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740493724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:21,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110533782] [2024-11-09 15:10:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:21,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:21,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:21,602 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) [2024-11-09 15:10:21,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:10:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:21,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:10:21,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:21,755 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:10:21,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110533782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:21,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:10:21,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:10:21,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052729048] [2024-11-09 15:10:21,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:21,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:10:21,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:21,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:10:21,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:10:21,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-11-09 15:10:21,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 179 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 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) [2024-11-09 15:10:21,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:21,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-11-09 15:10:21,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:22,487 INFO L124 PetriNetUnfolderBase]: 2273/5774 cut-off events. [2024-11-09 15:10:22,487 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-09 15:10:22,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9087 conditions, 5774 events. 2273/5774 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53604 event pairs, 1252 based on Foata normal form. 1/4394 useless extension candidates. Maximal degree in co-relation 9060. Up to 3249 conditions per place. [2024-11-09 15:10:22,527 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 56 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2024-11-09 15:10:22,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 507 flow [2024-11-09 15:10:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:10:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:10:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 766 transitions. [2024-11-09 15:10:22,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7092592592592593 [2024-11-09 15:10:22,532 INFO L175 Difference]: Start difference. First operand has 164 places, 179 transitions, 385 flow. Second operand 6 states and 766 transitions. [2024-11-09 15:10:22,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 507 flow [2024-11-09 15:10:22,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 178 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:10:22,537 INFO L231 Difference]: Finished difference. Result has 167 places, 178 transitions, 392 flow [2024-11-09 15:10:22,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=167, PETRI_TRANSITIONS=178} [2024-11-09 15:10:22,538 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 5 predicate places. [2024-11-09 15:10:22,538 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 178 transitions, 392 flow [2024-11-09 15:10:22,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 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) [2024-11-09 15:10:22,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:22,539 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:10:22,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:10:22,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:22,745 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:22,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash -506567868, now seen corresponding path program 1 times [2024-11-09 15:10:22,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:22,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273474312] [2024-11-09 15:10:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:22,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:22,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:22,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273474312] [2024-11-09 15:10:22,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273474312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:22,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647275281] [2024-11-09 15:10:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:22,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:22,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:22,888 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) [2024-11-09 15:10:22,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:10:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:22,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:10:22,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:22,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:10:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:23,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647275281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:10:23,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:10:23,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:10:23,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982509312] [2024-11-09 15:10:23,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:10:23,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:10:23,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:23,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:10:23,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:10:23,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-11-09 15:10:23,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 178 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 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) [2024-11-09 15:10:23,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:23,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-11-09 15:10:23,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:23,709 INFO L124 PetriNetUnfolderBase]: 2276/5786 cut-off events. [2024-11-09 15:10:23,709 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-09 15:10:23,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 5786 events. 2276/5786 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53709 event pairs, 1252 based on Foata normal form. 3/4406 useless extension candidates. Maximal degree in co-relation 9061. Up to 3256 conditions per place. [2024-11-09 15:10:23,805 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 59 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2024-11-09 15:10:23,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 187 transitions, 590 flow [2024-11-09 15:10:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:10:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:10:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1245 transitions. [2024-11-09 15:10:23,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-11-09 15:10:23,810 INFO L175 Difference]: Start difference. First operand has 167 places, 178 transitions, 392 flow. Second operand 10 states and 1245 transitions. [2024-11-09 15:10:23,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 187 transitions, 590 flow [2024-11-09 15:10:23,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 544 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-09 15:10:23,817 INFO L231 Difference]: Finished difference. Result has 174 places, 187 transitions, 444 flow [2024-11-09 15:10:23,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=444, PETRI_PLACES=174, PETRI_TRANSITIONS=187} [2024-11-09 15:10:23,820 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2024-11-09 15:10:23,820 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 187 transitions, 444 flow [2024-11-09 15:10:23,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 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) [2024-11-09 15:10:23,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:23,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:23,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:10:24,026 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,SelfDestructingSolverStorable2 [2024-11-09 15:10:24,027 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:24,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:24,027 INFO L85 PathProgramCache]: Analyzing trace with hash -168260666, now seen corresponding path program 1 times [2024-11-09 15:10:24,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:24,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050145604] [2024-11-09 15:10:24,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:24,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:24,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:24,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050145604] [2024-11-09 15:10:24,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050145604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:24,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:24,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:10:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057549229] [2024-11-09 15:10:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:24,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:10:24,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:24,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:10:24,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:10:24,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2024-11-09 15:10:24,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 187 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2024-11-09 15:10:24,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:24,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2024-11-09 15:10:24,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:25,262 INFO L124 PetriNetUnfolderBase]: 5324/11288 cut-off events. [2024-11-09 15:10:25,263 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-09 15:10:25,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19267 conditions, 11288 events. 5324/11288 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 104859 event pairs, 1055 based on Foata normal form. 416/9336 useless extension candidates. Maximal degree in co-relation 19233. Up to 3742 conditions per place. [2024-11-09 15:10:25,339 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 143 selfloop transitions, 20 changer transitions 0/255 dead transitions. [2024-11-09 15:10:25,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 255 transitions, 910 flow [2024-11-09 15:10:25,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:10:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:10:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2024-11-09 15:10:25,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7541666666666667 [2024-11-09 15:10:25,343 INFO L175 Difference]: Start difference. First operand has 174 places, 187 transitions, 444 flow. Second operand 4 states and 543 transitions. [2024-11-09 15:10:25,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 255 transitions, 910 flow [2024-11-09 15:10:25,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 255 transitions, 899 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 15:10:25,350 INFO L231 Difference]: Finished difference. Result has 174 places, 195 transitions, 569 flow [2024-11-09 15:10:25,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=174, PETRI_TRANSITIONS=195} [2024-11-09 15:10:25,351 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2024-11-09 15:10:25,352 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 195 transitions, 569 flow [2024-11-09 15:10:25,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2024-11-09 15:10:25,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:25,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:25,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:10:25,354 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:25,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:25,354 INFO L85 PathProgramCache]: Analyzing trace with hash -921111943, now seen corresponding path program 1 times [2024-11-09 15:10:25,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:25,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314165695] [2024-11-09 15:10:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:25,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:25,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:25,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314165695] [2024-11-09 15:10:25,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314165695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:25,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:25,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:10:25,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323770177] [2024-11-09 15:10:25,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:25,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:10:25,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:25,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:10:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:10:25,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2024-11-09 15:10:25,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 195 transitions, 569 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2024-11-09 15:10:25,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:25,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2024-11-09 15:10:25,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:26,342 INFO L124 PetriNetUnfolderBase]: 3212/8400 cut-off events. [2024-11-09 15:10:26,343 INFO L125 PetriNetUnfolderBase]: For 2038/2248 co-relation queries the response was YES. [2024-11-09 15:10:26,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15296 conditions, 8400 events. 3212/8400 cut-off events. For 2038/2248 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 83385 event pairs, 1877 based on Foata normal form. 114/6783 useless extension candidates. Maximal degree in co-relation 15260. Up to 3379 conditions per place. [2024-11-09 15:10:26,391 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 105 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2024-11-09 15:10:26,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 225 transitions, 854 flow [2024-11-09 15:10:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:10:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:10:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 569 transitions. [2024-11-09 15:10:26,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7902777777777777 [2024-11-09 15:10:26,394 INFO L175 Difference]: Start difference. First operand has 174 places, 195 transitions, 569 flow. Second operand 4 states and 569 transitions. [2024-11-09 15:10:26,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 225 transitions, 854 flow [2024-11-09 15:10:26,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 225 transitions, 854 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:10:26,409 INFO L231 Difference]: Finished difference. Result has 179 places, 196 transitions, 592 flow [2024-11-09 15:10:26,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=179, PETRI_TRANSITIONS=196} [2024-11-09 15:10:26,410 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 17 predicate places. [2024-11-09 15:10:26,410 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 196 transitions, 592 flow [2024-11-09 15:10:26,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2024-11-09 15:10:26,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:26,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:26,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:10:26,411 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:26,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash -921080133, now seen corresponding path program 1 times [2024-11-09 15:10:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:26,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815276012] [2024-11-09 15:10:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:26,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:26,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815276012] [2024-11-09 15:10:26,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815276012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:26,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:26,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:10:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312694190] [2024-11-09 15:10:26,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:26,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:10:26,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:26,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:10:26,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:10:26,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-09 15:10:26,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 196 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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) [2024-11-09 15:10:26,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:26,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-09 15:10:26,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:28,492 INFO L124 PetriNetUnfolderBase]: 9582/21426 cut-off events. [2024-11-09 15:10:28,492 INFO L125 PetriNetUnfolderBase]: For 7184/7268 co-relation queries the response was YES. [2024-11-09 15:10:28,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41950 conditions, 21426 events. 9582/21426 cut-off events. For 7184/7268 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 210412 event pairs, 1409 based on Foata normal form. 292/18493 useless extension candidates. Maximal degree in co-relation 41912. Up to 6372 conditions per place. [2024-11-09 15:10:28,648 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 203 selfloop transitions, 32 changer transitions 0/335 dead transitions. [2024-11-09 15:10:28,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 335 transitions, 1457 flow [2024-11-09 15:10:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:10:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:10:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2024-11-09 15:10:28,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7988888888888889 [2024-11-09 15:10:28,651 INFO L175 Difference]: Start difference. First operand has 179 places, 196 transitions, 592 flow. Second operand 5 states and 719 transitions. [2024-11-09 15:10:28,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 335 transitions, 1457 flow [2024-11-09 15:10:28,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 335 transitions, 1454 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:10:28,678 INFO L231 Difference]: Finished difference. Result has 186 places, 218 transitions, 859 flow [2024-11-09 15:10:28,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=186, PETRI_TRANSITIONS=218} [2024-11-09 15:10:28,679 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 24 predicate places. [2024-11-09 15:10:28,680 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 218 transitions, 859 flow [2024-11-09 15:10:28,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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) [2024-11-09 15:10:28,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:28,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:28,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:10:28,680 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:28,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:28,681 INFO L85 PathProgramCache]: Analyzing trace with hash -910619801, now seen corresponding path program 1 times [2024-11-09 15:10:28,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:28,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800832104] [2024-11-09 15:10:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:28,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:28,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:28,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800832104] [2024-11-09 15:10:28,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800832104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:28,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:28,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:10:28,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095278418] [2024-11-09 15:10:28,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:28,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:10:28,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:28,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:10:28,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:10:28,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2024-11-09 15:10:28,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 218 transitions, 859 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2024-11-09 15:10:28,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:28,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2024-11-09 15:10:28,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:31,676 INFO L124 PetriNetUnfolderBase]: 15194/33042 cut-off events. [2024-11-09 15:10:31,676 INFO L125 PetriNetUnfolderBase]: For 31170/32790 co-relation queries the response was YES. [2024-11-09 15:10:31,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72989 conditions, 33042 events. 15194/33042 cut-off events. For 31170/32790 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 340809 event pairs, 4101 based on Foata normal form. 1830/29665 useless extension candidates. Maximal degree in co-relation 72945. Up to 9920 conditions per place. [2024-11-09 15:10:31,899 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 222 selfloop transitions, 20 changer transitions 0/338 dead transitions. [2024-11-09 15:10:31,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 338 transitions, 2069 flow [2024-11-09 15:10:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:10:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:10:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2024-11-09 15:10:31,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7513888888888889 [2024-11-09 15:10:31,901 INFO L175 Difference]: Start difference. First operand has 186 places, 218 transitions, 859 flow. Second operand 4 states and 541 transitions. [2024-11-09 15:10:31,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 338 transitions, 2069 flow [2024-11-09 15:10:32,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 338 transitions, 2045 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-11-09 15:10:32,004 INFO L231 Difference]: Finished difference. Result has 188 places, 226 transitions, 987 flow [2024-11-09 15:10:32,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=987, PETRI_PLACES=188, PETRI_TRANSITIONS=226} [2024-11-09 15:10:32,007 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 26 predicate places. [2024-11-09 15:10:32,007 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 226 transitions, 987 flow [2024-11-09 15:10:32,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2024-11-09 15:10:32,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:32,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:32,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:10:32,008 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:32,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1511256591, now seen corresponding path program 1 times [2024-11-09 15:10:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:32,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063935373] [2024-11-09 15:10:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:32,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:32,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:32,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063935373] [2024-11-09 15:10:32,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063935373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:32,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:32,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:10:32,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692678918] [2024-11-09 15:10:32,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:32,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:10:32,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:32,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:10:32,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:10:32,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-09 15:10:32,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 226 transitions, 987 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2024-11-09 15:10:32,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:32,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-09 15:10:32,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:34,492 INFO L124 PetriNetUnfolderBase]: 12097/28436 cut-off events. [2024-11-09 15:10:34,493 INFO L125 PetriNetUnfolderBase]: For 29869/31183 co-relation queries the response was YES. [2024-11-09 15:10:34,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67007 conditions, 28436 events. 12097/28436 cut-off events. For 29869/31183 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 301801 event pairs, 2267 based on Foata normal form. 880/25474 useless extension candidates. Maximal degree in co-relation 66960. Up to 8600 conditions per place. [2024-11-09 15:10:34,698 INFO L140 encePairwiseOnDemand]: 164/180 looper letters, 226 selfloop transitions, 33 changer transitions 0/359 dead transitions. [2024-11-09 15:10:34,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 359 transitions, 2042 flow [2024-11-09 15:10:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:10:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:10:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2024-11-09 15:10:34,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811111111111111 [2024-11-09 15:10:34,700 INFO L175 Difference]: Start difference. First operand has 188 places, 226 transitions, 987 flow. Second operand 5 states and 703 transitions. [2024-11-09 15:10:34,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 359 transitions, 2042 flow [2024-11-09 15:10:34,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 359 transitions, 2042 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:10:34,826 INFO L231 Difference]: Finished difference. Result has 192 places, 230 transitions, 1065 flow [2024-11-09 15:10:34,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1065, PETRI_PLACES=192, PETRI_TRANSITIONS=230} [2024-11-09 15:10:34,827 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 30 predicate places. [2024-11-09 15:10:34,827 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 230 transitions, 1065 flow [2024-11-09 15:10:34,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2024-11-09 15:10:34,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:34,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:34,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:10:34,828 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:34,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1835558730, now seen corresponding path program 1 times [2024-11-09 15:10:34,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:34,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440120305] [2024-11-09 15:10:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:34,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:34,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:34,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440120305] [2024-11-09 15:10:34,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440120305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:34,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:34,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:10:34,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836574900] [2024-11-09 15:10:34,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:34,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:10:34,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:34,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:10:34,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:10:34,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2024-11-09 15:10:34,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 230 transitions, 1065 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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) [2024-11-09 15:10:34,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:34,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2024-11-09 15:10:34,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:36,934 INFO L124 PetriNetUnfolderBase]: 9581/24590 cut-off events. [2024-11-09 15:10:36,934 INFO L125 PetriNetUnfolderBase]: For 27547/28564 co-relation queries the response was YES. [2024-11-09 15:10:37,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57274 conditions, 24590 events. 9581/24590 cut-off events. For 27547/28564 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 269098 event pairs, 5519 based on Foata normal form. 600/21624 useless extension candidates. Maximal degree in co-relation 57225. Up to 10295 conditions per place. [2024-11-09 15:10:37,288 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 159 selfloop transitions, 4 changer transitions 0/287 dead transitions. [2024-11-09 15:10:37,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 287 transitions, 1755 flow [2024-11-09 15:10:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:10:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:10:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2024-11-09 15:10:37,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2024-11-09 15:10:37,294 INFO L175 Difference]: Start difference. First operand has 192 places, 230 transitions, 1065 flow. Second operand 4 states and 570 transitions. [2024-11-09 15:10:37,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 287 transitions, 1755 flow [2024-11-09 15:10:37,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 287 transitions, 1755 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:10:37,377 INFO L231 Difference]: Finished difference. Result has 197 places, 231 transitions, 1088 flow [2024-11-09 15:10:37,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1088, PETRI_PLACES=197, PETRI_TRANSITIONS=231} [2024-11-09 15:10:37,378 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 35 predicate places. [2024-11-09 15:10:37,378 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 231 transitions, 1088 flow [2024-11-09 15:10:37,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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) [2024-11-09 15:10:37,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:37,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:37,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:10:37,379 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:37,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:37,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1835590540, now seen corresponding path program 1 times [2024-11-09 15:10:37,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:37,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447671191] [2024-11-09 15:10:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:37,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:37,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:37,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447671191] [2024-11-09 15:10:37,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447671191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:37,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:37,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:10:37,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480364467] [2024-11-09 15:10:37,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:37,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:10:37,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:37,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:10:37,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:10:37,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-09 15:10:37,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 231 transitions, 1088 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2024-11-09 15:10:37,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:37,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-09 15:10:37,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:42,938 INFO L124 PetriNetUnfolderBase]: 25043/59161 cut-off events. [2024-11-09 15:10:42,939 INFO L125 PetriNetUnfolderBase]: For 75297/78088 co-relation queries the response was YES. [2024-11-09 15:10:43,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141350 conditions, 59161 events. 25043/59161 cut-off events. For 75297/78088 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 677683 event pairs, 3944 based on Foata normal form. 2224/54096 useless extension candidates. Maximal degree in co-relation 141299. Up to 16392 conditions per place. [2024-11-09 15:10:43,326 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 305 selfloop transitions, 32 changer transitions 0/445 dead transitions. [2024-11-09 15:10:43,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 445 transitions, 3041 flow [2024-11-09 15:10:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:10:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:10:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 715 transitions. [2024-11-09 15:10:43,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2024-11-09 15:10:43,329 INFO L175 Difference]: Start difference. First operand has 197 places, 231 transitions, 1088 flow. Second operand 5 states and 715 transitions. [2024-11-09 15:10:43,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 445 transitions, 3041 flow [2024-11-09 15:10:43,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 445 transitions, 3038 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:10:43,520 INFO L231 Difference]: Finished difference. Result has 204 places, 253 transitions, 1355 flow [2024-11-09 15:10:43,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1355, PETRI_PLACES=204, PETRI_TRANSITIONS=253} [2024-11-09 15:10:43,522 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 42 predicate places. [2024-11-09 15:10:43,522 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 253 transitions, 1355 flow [2024-11-09 15:10:43,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2024-11-09 15:10:43,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:43,523 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:43,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:10:43,523 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:43,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:43,524 INFO L85 PathProgramCache]: Analyzing trace with hash -395685535, now seen corresponding path program 1 times [2024-11-09 15:10:43,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:43,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194936782] [2024-11-09 15:10:43,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:43,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:43,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194936782] [2024-11-09 15:10:43,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194936782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:43,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:43,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:10:43,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286495448] [2024-11-09 15:10:43,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:43,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:10:43,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:43,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:10:43,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:10:43,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-09 15:10:43,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 253 transitions, 1355 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 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) [2024-11-09 15:10:43,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:43,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-09 15:10:43,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:55,129 INFO L124 PetriNetUnfolderBase]: 51809/110459 cut-off events. [2024-11-09 15:10:55,129 INFO L125 PetriNetUnfolderBase]: For 172070/177923 co-relation queries the response was YES. [2024-11-09 15:10:55,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291099 conditions, 110459 events. 51809/110459 cut-off events. For 172070/177923 co-relation queries the response was YES. Maximal size of possible extension queue 2715. Compared 1276583 event pairs, 14578 based on Foata normal form. 3649/107487 useless extension candidates. Maximal degree in co-relation 291042. Up to 29192 conditions per place. [2024-11-09 15:10:56,135 INFO L140 encePairwiseOnDemand]: 159/180 looper letters, 428 selfloop transitions, 44 changer transitions 0/584 dead transitions. [2024-11-09 15:10:56,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 584 transitions, 4308 flow [2024-11-09 15:10:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:10:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:10:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 988 transitions. [2024-11-09 15:10:56,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7841269841269841 [2024-11-09 15:10:56,139 INFO L175 Difference]: Start difference. First operand has 204 places, 253 transitions, 1355 flow. Second operand 7 states and 988 transitions. [2024-11-09 15:10:56,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 584 transitions, 4308 flow [2024-11-09 15:10:57,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 584 transitions, 4260 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-11-09 15:10:57,322 INFO L231 Difference]: Finished difference. Result has 214 places, 277 transitions, 1651 flow [2024-11-09 15:10:57,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1651, PETRI_PLACES=214, PETRI_TRANSITIONS=277} [2024-11-09 15:10:57,323 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 52 predicate places. [2024-11-09 15:10:57,323 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 277 transitions, 1651 flow [2024-11-09 15:10:57,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 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) [2024-11-09 15:10:57,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:57,323 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:57,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:10:57,323 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:10:57,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash 892303592, now seen corresponding path program 1 times [2024-11-09 15:10:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:57,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840325001] [2024-11-09 15:10:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:57,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:57,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:57,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840325001] [2024-11-09 15:10:57,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840325001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:10:57,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611804598] [2024-11-09 15:10:57,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:57,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:10:57,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:10:57,613 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) [2024-11-09 15:10:57,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:10:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:57,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 15:10:57,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:10:57,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:10:57,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 15:10:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:57,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:10:57,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 15:10:57,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-09 15:10:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:10:57,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611804598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:10:57,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:10:57,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:10:57,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337457442] [2024-11-09 15:10:57,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:10:57,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:10:57,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:57,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:10:57,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:10:58,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 180 [2024-11-09 15:10:58,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 277 transitions, 1651 flow. Second operand has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 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) [2024-11-09 15:10:58,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:58,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 180 [2024-11-09 15:10:58,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:08,353 INFO L124 PetriNetUnfolderBase]: 36279/91206 cut-off events. [2024-11-09 15:11:08,353 INFO L125 PetriNetUnfolderBase]: For 184068/189126 co-relation queries the response was YES. [2024-11-09 15:11:08,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247066 conditions, 91206 events. 36279/91206 cut-off events. For 184068/189126 co-relation queries the response was YES. Maximal size of possible extension queue 2391. Compared 1161515 event pairs, 10706 based on Foata normal form. 3045/85825 useless extension candidates. Maximal degree in co-relation 247003. Up to 18623 conditions per place. [2024-11-09 15:11:09,217 INFO L140 encePairwiseOnDemand]: 155/180 looper letters, 404 selfloop transitions, 56 changer transitions 0/588 dead transitions. [2024-11-09 15:11:09,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 588 transitions, 4467 flow [2024-11-09 15:11:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:11:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:11:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1341 transitions. [2024-11-09 15:11:09,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.745 [2024-11-09 15:11:09,221 INFO L175 Difference]: Start difference. First operand has 214 places, 277 transitions, 1651 flow. Second operand 10 states and 1341 transitions. [2024-11-09 15:11:09,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 588 transitions, 4467 flow [2024-11-09 15:11:12,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 588 transitions, 4467 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:11:12,335 INFO L231 Difference]: Finished difference. Result has 227 places, 289 transitions, 1974 flow [2024-11-09 15:11:12,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1974, PETRI_PLACES=227, PETRI_TRANSITIONS=289} [2024-11-09 15:11:12,336 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 65 predicate places. [2024-11-09 15:11:12,336 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 289 transitions, 1974 flow [2024-11-09 15:11:12,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 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) [2024-11-09 15:11:12,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:12,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:12,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:11:12,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:12,538 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-11-09 15:11:12,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1068701616, now seen corresponding path program 1 times [2024-11-09 15:11:12,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:12,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622865510] [2024-11-09 15:11:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:12,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:12,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:12,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622865510] [2024-11-09 15:11:12,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622865510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:12,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:12,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:11:12,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078019163] [2024-11-09 15:11:12,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:12,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:12,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:12,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:12,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-11-09 15:11:12,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 289 transitions, 1974 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2024-11-09 15:11:12,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:12,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-11-09 15:11:12,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand