./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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/popl20-three-array-max.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 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:09:20,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:09:20,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:09:20,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:09:20,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:09:20,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:09:20,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:09:20,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:09:20,441 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:09:20,442 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:09:20,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:09:20,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:09:20,445 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:09:20,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:09:20,447 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:09:20,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:09:20,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:09:20,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:09:20,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:09:20,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:09:20,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:09:20,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:09:20,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:09:20,454 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:09:20,454 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:09:20,454 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:09:20,454 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:09:20,455 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:09:20,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:09:20,455 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:09:20,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:09:20,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:09:20,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:09:20,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:09:20,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:09:20,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:09:20,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:09:20,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:09:20,457 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:09:20,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:09:20,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:09:20,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:09:20,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:09:20,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:09:20,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2024-11-19 14:09:20,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:09:20,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:09:20,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:09:20,806 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:09:20,807 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:09:20,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-19 14:09:22,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:09:22,512 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:09:22,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-19 14:09:22,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98cf65a17/101f31332974486f8a6ef43768c2a4b4/FLAGdbc15b12f [2024-11-19 14:09:22,543 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98cf65a17/101f31332974486f8a6ef43768c2a4b4 [2024-11-19 14:09:22,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:09:22,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:09:22,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:09:22,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:09:22,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:09:22,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f259995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22, skipping insertion in model container [2024-11-19 14:09:22,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:09:22,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:09:22,838 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:09:22,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:09:22,892 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:09:22,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22 WrapperNode [2024-11-19 14:09:22,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:09:22,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:09:22,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:09:22,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:09:22,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,938 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 276 [2024-11-19 14:09:22,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:09:22,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:09:22,939 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:09:22,939 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:09:22,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,957 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,975 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-19 14:09:22,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:22,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:23,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:09:23,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:09:23,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:09:23,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:09:23,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (1/1) ... [2024-11-19 14:09:23,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:09:23,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:23,048 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) [2024-11-19 14:09:23,050 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 [2024-11-19 14:09:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:09:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:09:23,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:09:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:09:23,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:09:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:09:23,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:09:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:09:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:09:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:09:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:09:23,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:09:23,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:09:23,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:09:23,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:09:23,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:09:23,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:09:23,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:09:23,097 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:09:23,209 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:09:23,211 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:09:23,846 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:09:23,846 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:09:24,228 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:09:24,228 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 14:09:24,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:24 BoogieIcfgContainer [2024-11-19 14:09:24,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:09:24,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:09:24,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:09:24,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:09:24,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:09:22" (1/3) ... [2024-11-19 14:09:24,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197ea87e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:09:24, skipping insertion in model container [2024-11-19 14:09:24,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:22" (2/3) ... [2024-11-19 14:09:24,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197ea87e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:09:24, skipping insertion in model container [2024-11-19 14:09:24,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:24" (3/3) ... [2024-11-19 14:09:24,242 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-11-19 14:09:24,260 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:09:24,261 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-19 14:09:24,261 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:09:24,442 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:09:24,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 105 transitions, 231 flow [2024-11-19 14:09:24,527 INFO L124 PetriNetUnfolderBase]: 11/102 cut-off events. [2024-11-19 14:09:24,527 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:09:24,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 11/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 250 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-19 14:09:24,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 105 transitions, 231 flow [2024-11-19 14:09:24,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 101 transitions, 220 flow [2024-11-19 14:09:24,548 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:09:24,555 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;@6226b511, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:09:24,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-11-19 14:09:24,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:09:24,559 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:09:24,559 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:09:24,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:24,559 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:09:24,560 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:24,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:24,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1041504, now seen corresponding path program 1 times [2024-11-19 14:09:24,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:24,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395168208] [2024-11-19 14:09:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:24,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:24,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:24,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395168208] [2024-11-19 14:09:24,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395168208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:24,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:24,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:24,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953945569] [2024-11-19 14:09:24,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:24,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:24,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:24,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-19 14:09:24,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-19 14:09:24,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:24,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-19 14:09:24,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:25,537 INFO L124 PetriNetUnfolderBase]: 1153/2343 cut-off events. [2024-11-19 14:09:25,537 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-19 14:09:25,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4036 conditions, 2343 events. 1153/2343 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16172 event pairs, 826 based on Foata normal form. 3/1752 useless extension candidates. Maximal degree in co-relation 3589. Up to 1545 conditions per place. [2024-11-19 14:09:25,568 INFO L140 encePairwiseOnDemand]: 87/105 looper letters, 52 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-11-19 14:09:25,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 358 flow [2024-11-19 14:09:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2024-11-19 14:09:25,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-19 14:09:25,588 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 220 flow. Second operand 4 states and 266 transitions. [2024-11-19 14:09:25,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 358 flow [2024-11-19 14:09:25,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 108 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 14:09:25,604 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 292 flow [2024-11-19 14:09:25,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-11-19 14:09:25,610 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2024-11-19 14:09:25,613 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 292 flow [2024-11-19 14:09:25,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-19 14:09:25,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:25,614 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:09:25,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:09:25,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:25,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 963766068, now seen corresponding path program 1 times [2024-11-19 14:09:25,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:25,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742616184] [2024-11-19 14:09:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:25,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:25,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:25,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742616184] [2024-11-19 14:09:25,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742616184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:25,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681629771] [2024-11-19 14:09:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:25,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:25,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:25,805 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) [2024-11-19 14:09:25,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:09:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:25,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:25,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:25,957 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:09:25,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681629771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:25,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:09:25,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:09:25,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970959072] [2024-11-19 14:09:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:25,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:25,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:25,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:25,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:09:25,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-19 14:09:25,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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) [2024-11-19 14:09:25,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:25,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-19 14:09:25,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:26,402 INFO L124 PetriNetUnfolderBase]: 1153/2340 cut-off events. [2024-11-19 14:09:26,402 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-19 14:09:26,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3971 conditions, 2340 events. 1153/2340 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16144 event pairs, 826 based on Foata normal form. 3/1754 useless extension candidates. Maximal degree in co-relation 3898. Up to 1530 conditions per place. [2024-11-19 14:09:26,417 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 42 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2024-11-19 14:09:26,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 398 flow [2024-11-19 14:09:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2024-11-19 14:09:26,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2024-11-19 14:09:26,421 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 292 flow. Second operand 6 states and 356 transitions. [2024-11-19 14:09:26,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 398 flow [2024-11-19 14:09:26,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:09:26,427 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 314 flow [2024-11-19 14:09:26,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=314, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2024-11-19 14:09:26,430 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 0 predicate places. [2024-11-19 14:09:26,430 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 314 flow [2024-11-19 14:09:26,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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) [2024-11-19 14:09:26,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:26,431 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 14:09:26,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:26,635 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 [2024-11-19 14:09:26,636 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:26,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:26,637 INFO L85 PathProgramCache]: Analyzing trace with hash 964607810, now seen corresponding path program 1 times [2024-11-19 14:09:26,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:26,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428160679] [2024-11-19 14:09:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:26,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:26,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:26,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428160679] [2024-11-19 14:09:26,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428160679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:26,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:26,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:26,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092284748] [2024-11-19 14:09:26,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:26,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:26,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:26,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:26,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:26,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-19 14:09:26,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2024-11-19 14:09:26,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:26,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-19 14:09:26,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:27,153 INFO L124 PetriNetUnfolderBase]: 1154/2357 cut-off events. [2024-11-19 14:09:27,154 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 14:09:27,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4020 conditions, 2357 events. 1154/2357 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16166 event pairs, 826 based on Foata normal form. 4/1771 useless extension candidates. Maximal degree in co-relation 3934. Up to 1545 conditions per place. [2024-11-19 14:09:27,172 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 63 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2024-11-19 14:09:27,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 470 flow [2024-11-19 14:09:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-11-19 14:09:27,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-11-19 14:09:27,175 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 314 flow. Second operand 4 states and 242 transitions. [2024-11-19 14:09:27,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 470 flow [2024-11-19 14:09:27,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 110 transitions, 432 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-19 14:09:27,179 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 340 flow [2024-11-19 14:09:27,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2024-11-19 14:09:27,180 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -1 predicate places. [2024-11-19 14:09:27,180 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 340 flow [2024-11-19 14:09:27,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2024-11-19 14:09:27,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:27,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:27,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:09:27,181 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:27,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash -161927917, now seen corresponding path program 1 times [2024-11-19 14:09:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:27,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762993689] [2024-11-19 14:09:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:27,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:27,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762993689] [2024-11-19 14:09:27,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762993689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:27,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:27,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:27,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578060583] [2024-11-19 14:09:27,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:27,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:09:27,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:27,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:09:27,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:09:27,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-19 14:09:27,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-11-19 14:09:27,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:27,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-19 14:09:27,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:27,665 INFO L124 PetriNetUnfolderBase]: 1153/2356 cut-off events. [2024-11-19 14:09:27,665 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-19 14:09:27,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 2356 events. 1153/2356 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16153 event pairs, 826 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 3946. Up to 1549 conditions per place. [2024-11-19 14:09:27,684 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 56 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-11-19 14:09:27,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 452 flow [2024-11-19 14:09:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:09:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:09:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-11-19 14:09:27,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-11-19 14:09:27,686 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 340 flow. Second operand 3 states and 215 transitions. [2024-11-19 14:09:27,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 452 flow [2024-11-19 14:09:27,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:09:27,693 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 340 flow [2024-11-19 14:09:27,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-11-19 14:09:27,697 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2024-11-19 14:09:27,697 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 340 flow [2024-11-19 14:09:27,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-11-19 14:09:27,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:27,698 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:09:27,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:09:27,698 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:27,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:27,698 INFO L85 PathProgramCache]: Analyzing trace with hash -188021864, now seen corresponding path program 1 times [2024-11-19 14:09:27,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:27,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698440836] [2024-11-19 14:09:27,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:27,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:27,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:27,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698440836] [2024-11-19 14:09:27,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698440836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:27,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221742267] [2024-11-19 14:09:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:27,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:27,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:27,781 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) [2024-11-19 14:09:27,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:09:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:27,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:27,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:27,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:27,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221742267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:27,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:27,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:09:27,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686498752] [2024-11-19 14:09:27,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:27,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:09:27,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:27,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:09:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:09:27,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-19 14:09:27,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 340 flow. Second operand has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 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) [2024-11-19 14:09:27,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:27,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-19 14:09:27,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:28,367 INFO L124 PetriNetUnfolderBase]: 1162/2392 cut-off events. [2024-11-19 14:09:28,367 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-19 14:09:28,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 2392 events. 1162/2392 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16368 event pairs, 826 based on Foata normal form. 9/1810 useless extension candidates. Maximal degree in co-relation 4107. Up to 1550 conditions per place. [2024-11-19 14:09:28,382 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 51 selfloop transitions, 37 changer transitions 0/134 dead transitions. [2024-11-19 14:09:28,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 134 transitions, 657 flow [2024-11-19 14:09:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:09:28,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:09:28,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2024-11-19 14:09:28,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5561904761904762 [2024-11-19 14:09:28,384 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 340 flow. Second operand 10 states and 584 transitions. [2024-11-19 14:09:28,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 134 transitions, 657 flow [2024-11-19 14:09:28,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 134 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:28,388 INFO L231 Difference]: Finished difference. Result has 112 places, 134 transitions, 603 flow [2024-11-19 14:09:28,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=112, PETRI_TRANSITIONS=134} [2024-11-19 14:09:28,389 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-11-19 14:09:28,389 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 134 transitions, 603 flow [2024-11-19 14:09:28,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 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) [2024-11-19 14:09:28,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:28,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:28,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:09:28,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:28,594 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:28,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:28,594 INFO L85 PathProgramCache]: Analyzing trace with hash -694835737, now seen corresponding path program 1 times [2024-11-19 14:09:28,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:28,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959547748] [2024-11-19 14:09:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:28,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:28,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:28,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959547748] [2024-11-19 14:09:28,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959547748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:28,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:28,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:28,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901088590] [2024-11-19 14:09:28,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:28,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:28,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:28,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:28,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:28,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-19 14:09:28,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2024-11-19 14:09:28,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:28,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-19 14:09:28,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:29,019 INFO L124 PetriNetUnfolderBase]: 1160/2390 cut-off events. [2024-11-19 14:09:29,019 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-19 14:09:29,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 2390 events. 1160/2390 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16250 event pairs, 826 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 4078. Up to 1563 conditions per place. [2024-11-19 14:09:29,044 INFO L140 encePairwiseOnDemand]: 98/105 looper letters, 71 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2024-11-19 14:09:29,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 132 transitions, 755 flow [2024-11-19 14:09:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2024-11-19 14:09:29,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-19 14:09:29,047 INFO L175 Difference]: Start difference. First operand has 112 places, 134 transitions, 603 flow. Second operand 4 states and 275 transitions. [2024-11-19 14:09:29,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 132 transitions, 755 flow [2024-11-19 14:09:29,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 132 transitions, 707 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:29,051 INFO L231 Difference]: Finished difference. Result has 112 places, 132 transitions, 565 flow [2024-11-19 14:09:29,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=565, PETRI_PLACES=112, PETRI_TRANSITIONS=132} [2024-11-19 14:09:29,054 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-11-19 14:09:29,055 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 132 transitions, 565 flow [2024-11-19 14:09:29,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2024-11-19 14:09:29,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:29,056 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:09:29,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:09:29,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:29,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:29,057 INFO L85 PathProgramCache]: Analyzing trace with hash -270275348, now seen corresponding path program 2 times [2024-11-19 14:09:29,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:29,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651668454] [2024-11-19 14:09:29,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:29,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:29,071 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:29,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:29,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:29,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651668454] [2024-11-19 14:09:29,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651668454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:29,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448118798] [2024-11-19 14:09:29,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:29,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:29,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:29,116 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) [2024-11-19 14:09:29,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:09:29,199 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:29,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:29,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:09:29,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:29,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:29,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448118798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:29,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:29,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:09:29,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652469790] [2024-11-19 14:09:29,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:29,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:29,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:29,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:29,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:29,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-19 14:09:29,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 132 transitions, 565 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-19 14:09:29,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:29,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-19 14:09:29,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:29,628 INFO L124 PetriNetUnfolderBase]: 1160/2389 cut-off events. [2024-11-19 14:09:29,628 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-19 14:09:29,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 2389 events. 1160/2389 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16261 event pairs, 826 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 4065. Up to 1567 conditions per place. [2024-11-19 14:09:29,648 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 70 selfloop transitions, 15 changer transitions 0/131 dead transitions. [2024-11-19 14:09:29,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 131 transitions, 725 flow [2024-11-19 14:09:29,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2024-11-19 14:09:29,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-19 14:09:29,651 INFO L175 Difference]: Start difference. First operand has 112 places, 132 transitions, 565 flow. Second operand 4 states and 246 transitions. [2024-11-19 14:09:29,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 131 transitions, 725 flow [2024-11-19 14:09:29,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 701 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:29,656 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 561 flow [2024-11-19 14:09:29,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=561, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-11-19 14:09:29,659 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-11-19 14:09:29,659 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 561 flow [2024-11-19 14:09:29,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-19 14:09:29,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:29,660 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:29,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:09:29,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:29,860 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:29,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:29,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1856241909, now seen corresponding path program 1 times [2024-11-19 14:09:29,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:29,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782904254] [2024-11-19 14:09:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:29,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:30,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782904254] [2024-11-19 14:09:30,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782904254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367587992] [2024-11-19 14:09:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:30,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:30,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:30,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:30,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:09:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:30,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 14:09:30,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:30,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:09:30,464 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 [2024-11-19 14:09:30,500 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:09:30,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:09:30,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:09:30,529 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 [2024-11-19 14:09:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:30,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:30,586 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_100 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_100) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2024-11-19 14:09:30,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:30,658 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-19 14:09:30,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:30,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-19 14:09:30,676 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 11 treesize of output 9 [2024-11-19 14:09:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-19 14:09:30,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367587992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:30,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:30,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-19 14:09:30,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522484240] [2024-11-19 14:09:30,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:30,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:09:30,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:30,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:09:30,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=104, Unknown=1, NotChecked=20, Total=156 [2024-11-19 14:09:30,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 105 [2024-11-19 14:09:30,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 561 flow. Second operand has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 13 states have internal predecessors, (505), 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) [2024-11-19 14:09:30,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:30,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 105 [2024-11-19 14:09:30,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:31,402 INFO L124 PetriNetUnfolderBase]: 1158/2392 cut-off events. [2024-11-19 14:09:31,403 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-11-19 14:09:31,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 2392 events. 1158/2392 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16274 event pairs, 826 based on Foata normal form. 0/1805 useless extension candidates. Maximal degree in co-relation 4103. Up to 1529 conditions per place. [2024-11-19 14:09:31,418 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 85 selfloop transitions, 24 changer transitions 0/139 dead transitions. [2024-11-19 14:09:31,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 139 transitions, 795 flow [2024-11-19 14:09:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:09:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:09:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 487 transitions. [2024-11-19 14:09:31,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42164502164502166 [2024-11-19 14:09:31,420 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 561 flow. Second operand 11 states and 487 transitions. [2024-11-19 14:09:31,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 139 transitions, 795 flow [2024-11-19 14:09:31,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 139 transitions, 765 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:31,425 INFO L231 Difference]: Finished difference. Result has 117 places, 130 transitions, 577 flow [2024-11-19 14:09:31,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=577, PETRI_PLACES=117, PETRI_TRANSITIONS=130} [2024-11-19 14:09:31,425 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 17 predicate places. [2024-11-19 14:09:31,426 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 130 transitions, 577 flow [2024-11-19 14:09:31,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 13 states have internal predecessors, (505), 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) [2024-11-19 14:09:31,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:31,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:31,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:09:31,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:31,631 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:31,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1708918148, now seen corresponding path program 1 times [2024-11-19 14:09:31,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:31,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188347767] [2024-11-19 14:09:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:31,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:31,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:31,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188347767] [2024-11-19 14:09:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188347767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130983123] [2024-11-19 14:09:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:31,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:31,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:31,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:31,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:09:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:31,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 14:09:32,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:32,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:09:32,030 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 [2024-11-19 14:09:32,064 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:09:32,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:09:32,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 14:09:32,088 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 15 treesize of output 7 [2024-11-19 14:09:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:32,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:32,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:32,224 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-19 14:09:32,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:32,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-19 14:09:32,251 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 9 treesize of output 7 [2024-11-19 14:09:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:32,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130983123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:32,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:32,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 14:09:32,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270870130] [2024-11-19 14:09:32,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:32,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 14:09:32,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:32,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 14:09:32,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=144, Unknown=2, NotChecked=0, Total=182 [2024-11-19 14:09:32,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 105 [2024-11-19 14:09:32,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 130 transitions, 577 flow. Second operand has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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) [2024-11-19 14:09:32,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:32,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 105 [2024-11-19 14:09:32,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:33,074 INFO L124 PetriNetUnfolderBase]: 1158/2391 cut-off events. [2024-11-19 14:09:33,074 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-11-19 14:09:33,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 2391 events. 1158/2391 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16279 event pairs, 826 based on Foata normal form. 1/1808 useless extension candidates. Maximal degree in co-relation 4105. Up to 1533 conditions per place. [2024-11-19 14:09:33,135 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 78 selfloop transitions, 25 changer transitions 0/133 dead transitions. [2024-11-19 14:09:33,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 133 transitions, 787 flow [2024-11-19 14:09:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:09:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:09:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 479 transitions. [2024-11-19 14:09:33,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4147186147186147 [2024-11-19 14:09:33,137 INFO L175 Difference]: Start difference. First operand has 117 places, 130 transitions, 577 flow. Second operand 11 states and 479 transitions. [2024-11-19 14:09:33,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 133 transitions, 787 flow [2024-11-19 14:09:33,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 133 transitions, 760 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:09:33,142 INFO L231 Difference]: Finished difference. Result has 122 places, 129 transitions, 596 flow [2024-11-19 14:09:33,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=596, PETRI_PLACES=122, PETRI_TRANSITIONS=129} [2024-11-19 14:09:33,143 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 22 predicate places. [2024-11-19 14:09:33,143 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 129 transitions, 596 flow [2024-11-19 14:09:33,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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) [2024-11-19 14:09:33,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:33,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:33,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:33,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:33,348 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:33,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1436854551, now seen corresponding path program 1 times [2024-11-19 14:09:33,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:33,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756911491] [2024-11-19 14:09:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:33,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:33,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:33,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756911491] [2024-11-19 14:09:33,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756911491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675781933] [2024-11-19 14:09:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:33,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:33,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:33,745 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:33,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:09:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:33,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 14:09:33,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:33,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:09:33,880 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 [2024-11-19 14:09:33,922 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:09:33,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:09:33,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:09:34,019 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-19 14:09:34,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2024-11-19 14:09:34,065 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 [2024-11-19 14:09:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:34,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:34,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:34,261 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-19 14:09:34,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:34,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-19 14:09:34,274 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 11 treesize of output 9 [2024-11-19 14:09:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:34,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675781933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:34,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:34,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 17 [2024-11-19 14:09:34,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722880001] [2024-11-19 14:09:34,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:34,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:09:34,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:34,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:09:34,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=283, Unknown=2, NotChecked=0, Total=342 [2024-11-19 14:09:34,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-11-19 14:09:34,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 129 transitions, 596 flow. Second operand has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 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) [2024-11-19 14:09:34,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:34,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-11-19 14:09:34,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:35,435 INFO L124 PetriNetUnfolderBase]: 1157/2387 cut-off events. [2024-11-19 14:09:35,435 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-19 14:09:35,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 2387 events. 1157/2387 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16269 event pairs, 826 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 4107. Up to 1530 conditions per place. [2024-11-19 14:09:35,452 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 80 selfloop transitions, 28 changer transitions 0/134 dead transitions. [2024-11-19 14:09:35,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 820 flow [2024-11-19 14:09:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 14:09:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 14:09:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 547 transitions. [2024-11-19 14:09:35,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37210884353741497 [2024-11-19 14:09:35,455 INFO L175 Difference]: Start difference. First operand has 122 places, 129 transitions, 596 flow. Second operand 14 states and 547 transitions. [2024-11-19 14:09:35,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 820 flow [2024-11-19 14:09:35,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 134 transitions, 768 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-19 14:09:35,504 INFO L231 Difference]: Finished difference. Result has 126 places, 128 transitions, 608 flow [2024-11-19 14:09:35,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=608, PETRI_PLACES=126, PETRI_TRANSITIONS=128} [2024-11-19 14:09:35,505 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 26 predicate places. [2024-11-19 14:09:35,505 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 128 transitions, 608 flow [2024-11-19 14:09:35,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 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) [2024-11-19 14:09:35,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:35,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:35,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:09:35,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:35,707 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:35,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1592819132, now seen corresponding path program 1 times [2024-11-19 14:09:35,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:35,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053513529] [2024-11-19 14:09:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:35,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:36,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:36,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053513529] [2024-11-19 14:09:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053513529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44900511] [2024-11-19 14:09:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:36,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:36,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:36,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:36,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:09:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:36,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 14:09:36,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:36,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:09:36,237 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 [2024-11-19 14:09:36,271 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:09:36,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:09:36,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 14:09:36,364 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-19 14:09:36,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-19 14:09:36,398 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 15 treesize of output 7 [2024-11-19 14:09:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:36,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:36,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:36,605 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-19 14:09:36,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:36,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-19 14:09:36,618 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 9 treesize of output 7 [2024-11-19 14:09:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:36,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44900511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:36,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:36,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 18 [2024-11-19 14:09:36,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191637157] [2024-11-19 14:09:36,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:36,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 14:09:36,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 14:09:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=317, Unknown=2, NotChecked=0, Total=380 [2024-11-19 14:09:36,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-11-19 14:09:36,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 128 transitions, 608 flow. Second operand has 20 states, 20 states have (on average 34.85) internal successors, (697), 20 states have internal predecessors, (697), 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) [2024-11-19 14:09:36,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:36,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-11-19 14:09:36,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:37,921 INFO L124 PetriNetUnfolderBase]: 1157/2387 cut-off events. [2024-11-19 14:09:37,921 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-11-19 14:09:37,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 2387 events. 1157/2387 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16241 event pairs, 826 based on Foata normal form. 4/1812 useless extension candidates. Maximal degree in co-relation 4148. Up to 1534 conditions per place. [2024-11-19 14:09:37,935 INFO L140 encePairwiseOnDemand]: 84/105 looper letters, 74 selfloop transitions, 32 changer transitions 1/133 dead transitions. [2024-11-19 14:09:37,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 133 transitions, 844 flow [2024-11-19 14:09:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 14:09:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 14:09:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 639 transitions. [2024-11-19 14:09:37,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35798319327731093 [2024-11-19 14:09:37,938 INFO L175 Difference]: Start difference. First operand has 126 places, 128 transitions, 608 flow. Second operand 17 states and 639 transitions. [2024-11-19 14:09:37,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 133 transitions, 844 flow [2024-11-19 14:09:37,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 133 transitions, 822 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-19 14:09:37,943 INFO L231 Difference]: Finished difference. Result has 140 places, 131 transitions, 679 flow [2024-11-19 14:09:37,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=679, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2024-11-19 14:09:37,943 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 40 predicate places. [2024-11-19 14:09:37,944 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 679 flow [2024-11-19 14:09:37,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 34.85) internal successors, (697), 20 states have internal predecessors, (697), 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) [2024-11-19 14:09:37,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:37,944 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:37,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:09:38,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:38,149 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:38,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:38,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1713689486, now seen corresponding path program 1 times [2024-11-19 14:09:38,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:38,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828757600] [2024-11-19 14:09:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:38,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:38,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:38,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828757600] [2024-11-19 14:09:38,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828757600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:38,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240603667] [2024-11-19 14:09:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:38,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:38,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:38,311 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:38,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:09:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:38,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 14:09:38,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:09:38,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:09:38,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240603667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:38,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:38,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-11-19 14:09:38,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959278887] [2024-11-19 14:09:38,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:38,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 14:09:38,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 14:09:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-19 14:09:38,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-19 14:09:38,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 679 flow. Second operand has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 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) [2024-11-19 14:09:38,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:38,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-19 14:09:38,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:39,746 INFO L124 PetriNetUnfolderBase]: 2301/4722 cut-off events. [2024-11-19 14:09:39,747 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2024-11-19 14:09:39,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8239 conditions, 4722 events. 2301/4722 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34357 event pairs, 1652 based on Foata normal form. 2/3585 useless extension candidates. Maximal degree in co-relation 8188. Up to 1551 conditions per place. [2024-11-19 14:09:39,782 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 91 selfloop transitions, 46 changer transitions 0/180 dead transitions. [2024-11-19 14:09:39,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 180 transitions, 1178 flow [2024-11-19 14:09:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:09:39,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:09:39,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 648 transitions. [2024-11-19 14:09:39,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.561038961038961 [2024-11-19 14:09:39,784 INFO L175 Difference]: Start difference. First operand has 140 places, 131 transitions, 679 flow. Second operand 11 states and 648 transitions. [2024-11-19 14:09:39,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 180 transitions, 1178 flow [2024-11-19 14:09:39,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 180 transitions, 1112 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-19 14:09:39,790 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 774 flow [2024-11-19 14:09:39,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=774, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2024-11-19 14:09:39,791 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 41 predicate places. [2024-11-19 14:09:39,791 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 774 flow [2024-11-19 14:09:39,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 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) [2024-11-19 14:09:39,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:39,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:39,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:09:39,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 14:09:39,997 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:39,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:39,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1944564241, now seen corresponding path program 1 times [2024-11-19 14:09:39,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:39,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885141047] [2024-11-19 14:09:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:39,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:40,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:40,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885141047] [2024-11-19 14:09:40,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885141047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:40,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:40,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:09:40,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979039067] [2024-11-19 14:09:40,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:40,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:40,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:40,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:40,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:40,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 105 [2024-11-19 14:09:40,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-11-19 14:09:40,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:40,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 105 [2024-11-19 14:09:40,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:40,680 INFO L124 PetriNetUnfolderBase]: 2301/4710 cut-off events. [2024-11-19 14:09:40,680 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-11-19 14:09:40,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8256 conditions, 4710 events. 2301/4710 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34448 event pairs, 1652 based on Foata normal form. 2/3560 useless extension candidates. Maximal degree in co-relation 8205. Up to 3107 conditions per place. [2024-11-19 14:09:40,702 INFO L140 encePairwiseOnDemand]: 91/105 looper letters, 87 selfloop transitions, 20 changer transitions 0/139 dead transitions. [2024-11-19 14:09:40,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 139 transitions, 992 flow [2024-11-19 14:09:40,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-11-19 14:09:40,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-11-19 14:09:40,705 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 774 flow. Second operand 6 states and 303 transitions. [2024-11-19 14:09:40,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 139 transitions, 992 flow [2024-11-19 14:09:40,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 139 transitions, 911 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-19 14:09:40,710 INFO L231 Difference]: Finished difference. Result has 140 places, 139 transitions, 763 flow [2024-11-19 14:09:40,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=763, PETRI_PLACES=140, PETRI_TRANSITIONS=139} [2024-11-19 14:09:40,711 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 40 predicate places. [2024-11-19 14:09:40,711 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 139 transitions, 763 flow [2024-11-19 14:09:40,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-11-19 14:09:40,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:40,711 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2024-11-19 14:09:40,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 14:09:40,711 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:40,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:40,712 INFO L85 PathProgramCache]: Analyzing trace with hash -45306850, now seen corresponding path program 2 times [2024-11-19 14:09:40,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:40,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203347949] [2024-11-19 14:09:40,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:40,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:40,726 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:40,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 14:09:40,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:40,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203347949] [2024-11-19 14:09:40,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203347949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:40,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360623634] [2024-11-19 14:09:40,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:40,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:40,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:40,769 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:40,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:09:40,858 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:40,858 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:40,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:09:40,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 14:09:40,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 14:09:40,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360623634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:40,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:40,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-19 14:09:40,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303921690] [2024-11-19 14:09:40,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:40,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:40,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:40,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:40,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-19 14:09:40,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 139 transitions, 763 flow. Second operand has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 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) [2024-11-19 14:09:40,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:40,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-19 14:09:40,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:41,473 INFO L124 PetriNetUnfolderBase]: 2303/4708 cut-off events. [2024-11-19 14:09:41,477 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-19 14:09:41,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8228 conditions, 4708 events. 2303/4708 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34364 event pairs, 1652 based on Foata normal form. 2/3558 useless extension candidates. Maximal degree in co-relation 8176. Up to 3075 conditions per place. [2024-11-19 14:09:41,531 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 54 selfloop transitions, 40 changer transitions 0/137 dead transitions. [2024-11-19 14:09:41,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 137 transitions, 931 flow [2024-11-19 14:09:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:09:41,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:09:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-11-19 14:09:41,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-19 14:09:41,537 INFO L175 Difference]: Start difference. First operand has 140 places, 139 transitions, 763 flow. Second operand 5 states and 294 transitions. [2024-11-19 14:09:41,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 137 transitions, 931 flow [2024-11-19 14:09:41,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 137 transitions, 871 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-19 14:09:41,546 INFO L231 Difference]: Finished difference. Result has 134 places, 137 transitions, 763 flow [2024-11-19 14:09:41,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=763, PETRI_PLACES=134, PETRI_TRANSITIONS=137} [2024-11-19 14:09:41,547 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 34 predicate places. [2024-11-19 14:09:41,547 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 137 transitions, 763 flow [2024-11-19 14:09:41,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 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) [2024-11-19 14:09:41,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:41,547 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:41,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:41,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 14:09:41,749 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:41,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1423829912, now seen corresponding path program 1 times [2024-11-19 14:09:41,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:41,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409076365] [2024-11-19 14:09:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:41,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:41,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:41,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409076365] [2024-11-19 14:09:41,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409076365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:41,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:41,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:41,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324833776] [2024-11-19 14:09:41,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:41,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:41,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:41,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:41,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:41,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-11-19 14:09:41,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 137 transitions, 763 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2024-11-19 14:09:41,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:41,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-11-19 14:09:41,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:42,615 INFO L124 PetriNetUnfolderBase]: 4917/8286 cut-off events. [2024-11-19 14:09:42,615 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2024-11-19 14:09:42,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15385 conditions, 8286 events. 4917/8286 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 57056 event pairs, 1728 based on Foata normal form. 244/6240 useless extension candidates. Maximal degree in co-relation 15340. Up to 5080 conditions per place. [2024-11-19 14:09:42,657 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 133 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2024-11-19 14:09:42,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 178 transitions, 1123 flow [2024-11-19 14:09:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-11-19 14:09:42,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-11-19 14:09:42,658 INFO L175 Difference]: Start difference. First operand has 134 places, 137 transitions, 763 flow. Second operand 4 states and 304 transitions. [2024-11-19 14:09:42,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 178 transitions, 1123 flow [2024-11-19 14:09:42,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 178 transitions, 1048 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:42,663 INFO L231 Difference]: Finished difference. Result has 136 places, 140 transitions, 717 flow [2024-11-19 14:09:42,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=717, PETRI_PLACES=136, PETRI_TRANSITIONS=140} [2024-11-19 14:09:42,664 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 36 predicate places. [2024-11-19 14:09:42,664 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 140 transitions, 717 flow [2024-11-19 14:09:42,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2024-11-19 14:09:42,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:42,665 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:42,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 14:09:42,665 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:42,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:42,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1883356323, now seen corresponding path program 1 times [2024-11-19 14:09:42,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:42,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018868779] [2024-11-19 14:09:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:42,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:42,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:42,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018868779] [2024-11-19 14:09:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018868779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:42,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:42,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:42,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730027813] [2024-11-19 14:09:42,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:42,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:09:42,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:42,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:09:42,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:09:42,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-19 14:09:42,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 140 transitions, 717 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2024-11-19 14:09:42,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:42,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-19 14:09:42,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:43,692 INFO L124 PetriNetUnfolderBase]: 6023/10884 cut-off events. [2024-11-19 14:09:43,692 INFO L125 PetriNetUnfolderBase]: For 3823/4163 co-relation queries the response was YES. [2024-11-19 14:09:43,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23284 conditions, 10884 events. 6023/10884 cut-off events. For 3823/4163 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 82887 event pairs, 2568 based on Foata normal form. 0/8344 useless extension candidates. Maximal degree in co-relation 23237. Up to 4974 conditions per place. [2024-11-19 14:09:43,755 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 116 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2024-11-19 14:09:43,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 162 transitions, 1020 flow [2024-11-19 14:09:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:09:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:09:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2024-11-19 14:09:43,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7396825396825397 [2024-11-19 14:09:43,757 INFO L175 Difference]: Start difference. First operand has 136 places, 140 transitions, 717 flow. Second operand 3 states and 233 transitions. [2024-11-19 14:09:43,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 162 transitions, 1020 flow [2024-11-19 14:09:43,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 162 transitions, 1014 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:43,768 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 735 flow [2024-11-19 14:09:43,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=735, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2024-11-19 14:09:43,768 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 38 predicate places. [2024-11-19 14:09:43,769 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 735 flow [2024-11-19 14:09:43,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2024-11-19 14:09:43,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:43,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:43,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 14:09:43,769 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:43,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1883356329, now seen corresponding path program 1 times [2024-11-19 14:09:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:43,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66624280] [2024-11-19 14:09:43,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:09:43,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:43,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66624280] [2024-11-19 14:09:43,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66624280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:43,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297451983] [2024-11-19 14:09:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:43,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:43,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:43,895 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:43,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:09:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:44,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 14:09:44,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:09:44,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:09:44,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297451983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:44,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:44,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-19 14:09:44,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935806992] [2024-11-19 14:09:44,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:44,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 14:09:44,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 14:09:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-19 14:09:44,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2024-11-19 14:09:44,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 735 flow. Second operand has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 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) [2024-11-19 14:09:44,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:44,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2024-11-19 14:09:44,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:45,174 INFO L124 PetriNetUnfolderBase]: 3768/7290 cut-off events. [2024-11-19 14:09:45,174 INFO L125 PetriNetUnfolderBase]: For 2700/3035 co-relation queries the response was YES. [2024-11-19 14:09:45,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15347 conditions, 7290 events. 3768/7290 cut-off events. For 2700/3035 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 51923 event pairs, 2538 based on Foata normal form. 77/5946 useless extension candidates. Maximal degree in co-relation 15299. Up to 4264 conditions per place. [2024-11-19 14:09:45,224 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 110 selfloop transitions, 45 changer transitions 0/197 dead transitions. [2024-11-19 14:09:45,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 197 transitions, 1266 flow [2024-11-19 14:09:45,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:09:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:09:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 639 transitions. [2024-11-19 14:09:45,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5532467532467532 [2024-11-19 14:09:45,230 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 735 flow. Second operand 11 states and 639 transitions. [2024-11-19 14:09:45,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 197 transitions, 1266 flow [2024-11-19 14:09:45,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 197 transitions, 1261 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:45,248 INFO L231 Difference]: Finished difference. Result has 149 places, 144 transitions, 842 flow [2024-11-19 14:09:45,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=842, PETRI_PLACES=149, PETRI_TRANSITIONS=144} [2024-11-19 14:09:45,249 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 49 predicate places. [2024-11-19 14:09:45,250 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 144 transitions, 842 flow [2024-11-19 14:09:45,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 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) [2024-11-19 14:09:45,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:45,250 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:45,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 14:09:45,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 14:09:45,455 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:45,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:45,456 INFO L85 PathProgramCache]: Analyzing trace with hash 221001158, now seen corresponding path program 1 times [2024-11-19 14:09:45,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:45,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514125950] [2024-11-19 14:09:45,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:45,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:45,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:45,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514125950] [2024-11-19 14:09:45,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514125950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:45,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725736196] [2024-11-19 14:09:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:45,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:45,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:45,586 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:45,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:09:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:45,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 14:09:45,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:45,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:45,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725736196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:45,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:45,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-19 14:09:45,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461541259] [2024-11-19 14:09:45,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:45,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 14:09:45,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:45,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 14:09:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-19 14:09:45,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-19 14:09:45,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 144 transitions, 842 flow. Second operand has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 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) [2024-11-19 14:09:45,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:45,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-19 14:09:45,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:46,971 INFO L124 PetriNetUnfolderBase]: 3163/6334 cut-off events. [2024-11-19 14:09:46,972 INFO L125 PetriNetUnfolderBase]: For 2764/2885 co-relation queries the response was YES. [2024-11-19 14:09:47,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13477 conditions, 6334 events. 3163/6334 cut-off events. For 2764/2885 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49056 event pairs, 2184 based on Foata normal form. 38/5105 useless extension candidates. Maximal degree in co-relation 13427. Up to 3850 conditions per place. [2024-11-19 14:09:47,036 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 100 selfloop transitions, 45 changer transitions 0/188 dead transitions. [2024-11-19 14:09:47,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 188 transitions, 1309 flow [2024-11-19 14:09:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:09:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:09:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 646 transitions. [2024-11-19 14:09:47,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5593073593073593 [2024-11-19 14:09:47,040 INFO L175 Difference]: Start difference. First operand has 149 places, 144 transitions, 842 flow. Second operand 11 states and 646 transitions. [2024-11-19 14:09:47,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 188 transitions, 1309 flow [2024-11-19 14:09:47,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 188 transitions, 1225 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 14:09:47,058 INFO L231 Difference]: Finished difference. Result has 153 places, 146 transitions, 868 flow [2024-11-19 14:09:47,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=868, PETRI_PLACES=153, PETRI_TRANSITIONS=146} [2024-11-19 14:09:47,059 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 53 predicate places. [2024-11-19 14:09:47,059 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 146 transitions, 868 flow [2024-11-19 14:09:47,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 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) [2024-11-19 14:09:47,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:47,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:47,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 14:09:47,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 14:09:47,260 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:47,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1981412927, now seen corresponding path program 1 times [2024-11-19 14:09:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:47,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706388650] [2024-11-19 14:09:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:47,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:47,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706388650] [2024-11-19 14:09:47,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706388650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:47,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:47,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:47,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811428673] [2024-11-19 14:09:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:47,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:47,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-19 14:09:47,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 146 transitions, 868 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:47,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:47,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-19 14:09:47,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:49,209 INFO L124 PetriNetUnfolderBase]: 7309/12773 cut-off events. [2024-11-19 14:09:49,209 INFO L125 PetriNetUnfolderBase]: For 9375/9785 co-relation queries the response was YES. [2024-11-19 14:09:49,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30206 conditions, 12773 events. 7309/12773 cut-off events. For 9375/9785 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 94237 event pairs, 3698 based on Foata normal form. 231/10511 useless extension candidates. Maximal degree in co-relation 30120. Up to 6584 conditions per place. [2024-11-19 14:09:49,409 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 168 selfloop transitions, 3 changer transitions 0/211 dead transitions. [2024-11-19 14:09:49,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 211 transitions, 1495 flow [2024-11-19 14:09:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-11-19 14:09:49,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-11-19 14:09:49,410 INFO L175 Difference]: Start difference. First operand has 153 places, 146 transitions, 868 flow. Second operand 4 states and 304 transitions. [2024-11-19 14:09:49,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 211 transitions, 1495 flow [2024-11-19 14:09:49,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 211 transitions, 1411 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 14:09:49,421 INFO L231 Difference]: Finished difference. Result has 150 places, 148 transitions, 806 flow [2024-11-19 14:09:49,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=806, PETRI_PLACES=150, PETRI_TRANSITIONS=148} [2024-11-19 14:09:49,422 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 50 predicate places. [2024-11-19 14:09:49,422 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 148 transitions, 806 flow [2024-11-19 14:09:49,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:49,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:49,423 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:49,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 14:09:49,423 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:49,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:49,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348615, now seen corresponding path program 2 times [2024-11-19 14:09:49,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:49,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768605423] [2024-11-19 14:09:49,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:49,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:49,486 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:49,487 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:09:50,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:50,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768605423] [2024-11-19 14:09:50,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768605423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:50,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338883778] [2024-11-19 14:09:50,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:50,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:50,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:50,347 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:50,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:09:50,483 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:50,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:50,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-19 14:09:50,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:50,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:09:50,586 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 [2024-11-19 14:09:50,626 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:09:50,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:09:50,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:09:50,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:09:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:09:50,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:50,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:50,944 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-19 14:09:50,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:50,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2024-11-19 14:09:50,958 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 13 treesize of output 9 [2024-11-19 14:09:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:09:51,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338883778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:51,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:51,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 27 [2024-11-19 14:09:51,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534761956] [2024-11-19 14:09:51,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:51,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 14:09:51,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:51,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 14:09:51,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=668, Unknown=6, NotChecked=0, Total=756 [2024-11-19 14:09:51,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-19 14:09:51,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 148 transitions, 806 flow. Second operand has 28 states, 28 states have (on average 46.0) internal successors, (1288), 28 states have internal predecessors, (1288), 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) [2024-11-19 14:09:51,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:51,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-19 14:09:51,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:56,601 INFO L124 PetriNetUnfolderBase]: 14286/23404 cut-off events. [2024-11-19 14:09:56,602 INFO L125 PetriNetUnfolderBase]: For 20362/22433 co-relation queries the response was YES. [2024-11-19 14:09:56,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60831 conditions, 23404 events. 14286/23404 cut-off events. For 20362/22433 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 173433 event pairs, 3201 based on Foata normal form. 382/18932 useless extension candidates. Maximal degree in co-relation 60641. Up to 3441 conditions per place. [2024-11-19 14:09:56,866 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 289 selfloop transitions, 73 changer transitions 0/400 dead transitions. [2024-11-19 14:09:56,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 400 transitions, 2615 flow [2024-11-19 14:09:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 14:09:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-19 14:09:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1781 transitions. [2024-11-19 14:09:56,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48462585034013606 [2024-11-19 14:09:56,877 INFO L175 Difference]: Start difference. First operand has 150 places, 148 transitions, 806 flow. Second operand 35 states and 1781 transitions. [2024-11-19 14:09:56,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 400 transitions, 2615 flow [2024-11-19 14:09:56,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 400 transitions, 2595 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:56,908 INFO L231 Difference]: Finished difference. Result has 189 places, 180 transitions, 1235 flow [2024-11-19 14:09:56,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1235, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2024-11-19 14:09:56,909 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 89 predicate places. [2024-11-19 14:09:56,909 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 1235 flow [2024-11-19 14:09:56,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 46.0) internal successors, (1288), 28 states have internal predecessors, (1288), 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) [2024-11-19 14:09:56,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:56,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:56,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 14:09:57,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:57,110 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:09:57,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:57,111 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348614, now seen corresponding path program 1 times [2024-11-19 14:09:57,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:57,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391917959] [2024-11-19 14:09:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:57,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:57,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:57,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391917959] [2024-11-19 14:09:57,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391917959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:57,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411025301] [2024-11-19 14:09:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:57,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:57,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:57,962 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:57,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 14:09:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:58,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 14:09:58,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:58,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:09:58,156 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 19 treesize of output 1 [2024-11-19 14:09:58,185 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:09:58,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:09:58,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:09:58,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:09:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:09:58,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:58,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:58,434 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-19 14:09:58,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:58,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2024-11-19 14:09:58,447 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 11 treesize of output 7 [2024-11-19 14:09:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:09:58,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411025301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:58,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:58,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 27 [2024-11-19 14:09:58,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185044126] [2024-11-19 14:09:58,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:58,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 14:09:58,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 14:09:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=667, Unknown=4, NotChecked=0, Total=756 [2024-11-19 14:09:58,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-19 14:09:58,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 1235 flow. Second operand has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 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) [2024-11-19 14:09:58,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:58,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-19 14:09:58,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:02,345 INFO L124 PetriNetUnfolderBase]: 13603/22436 cut-off events. [2024-11-19 14:10:02,345 INFO L125 PetriNetUnfolderBase]: For 27175/29296 co-relation queries the response was YES. [2024-11-19 14:10:02,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65578 conditions, 22436 events. 13603/22436 cut-off events. For 27175/29296 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 165001 event pairs, 3438 based on Foata normal form. 348/18596 useless extension candidates. Maximal degree in co-relation 65445. Up to 6454 conditions per place. [2024-11-19 14:10:02,524 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 160 selfloop transitions, 68 changer transitions 0/266 dead transitions. [2024-11-19 14:10:02,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 266 transitions, 2039 flow [2024-11-19 14:10:02,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 14:10:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 14:10:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1061 transitions. [2024-11-19 14:10:02,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4811791383219955 [2024-11-19 14:10:02,526 INFO L175 Difference]: Start difference. First operand has 189 places, 180 transitions, 1235 flow. Second operand 21 states and 1061 transitions. [2024-11-19 14:10:02,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 266 transitions, 2039 flow [2024-11-19 14:10:02,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 266 transitions, 1910 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-11-19 14:10:02,568 INFO L231 Difference]: Finished difference. Result has 194 places, 181 transitions, 1257 flow [2024-11-19 14:10:02,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1257, PETRI_PLACES=194, PETRI_TRANSITIONS=181} [2024-11-19 14:10:02,569 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 94 predicate places. [2024-11-19 14:10:02,569 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 181 transitions, 1257 flow [2024-11-19 14:10:02,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 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) [2024-11-19 14:10:02,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:02,570 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:02,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 14:10:02,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 14:10:02,770 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:10:02,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348612, now seen corresponding path program 1 times [2024-11-19 14:10:02,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:02,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371540528] [2024-11-19 14:10:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:02,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:03,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371540528] [2024-11-19 14:10:03,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371540528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114813033] [2024-11-19 14:10:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:03,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:03,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:03,777 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:10:03,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 14:10:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:03,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-19 14:10:03,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:03,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:10:03,997 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 19 treesize of output 1 [2024-11-19 14:10:04,046 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 14:10:04,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-19 14:10:04,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 14:10:04,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 14:10:04,143 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:10:04,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:10:04,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 14:10:04,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 14:10:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:04,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:04,323 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_476 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_476) c_~A~0.base) (+ c_~A~0.offset 4))))) is different from false [2024-11-19 14:10:04,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:10:04,585 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-19 14:10:04,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:10:04,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2024-11-19 14:10:04,612 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 32 treesize of output 28 [2024-11-19 14:10:04,621 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 58 treesize of output 50 [2024-11-19 14:10:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2024-11-19 14:10:04,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114813033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:04,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:04,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2024-11-19 14:10:04,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539563508] [2024-11-19 14:10:04,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:04,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 14:10:04,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 14:10:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=608, Unknown=2, NotChecked=50, Total=756 [2024-11-19 14:10:05,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-11-19 14:10:05,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 181 transitions, 1257 flow. Second operand has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 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) [2024-11-19 14:10:05,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:05,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-11-19 14:10:05,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:07,982 INFO L124 PetriNetUnfolderBase]: 10671/18206 cut-off events. [2024-11-19 14:10:07,982 INFO L125 PetriNetUnfolderBase]: For 25462/27315 co-relation queries the response was YES. [2024-11-19 14:10:08,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54698 conditions, 18206 events. 10671/18206 cut-off events. For 25462/27315 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 136004 event pairs, 5036 based on Foata normal form. 355/16076 useless extension candidates. Maximal degree in co-relation 54559. Up to 9441 conditions per place. [2024-11-19 14:10:08,173 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 166 selfloop transitions, 58 changer transitions 0/263 dead transitions. [2024-11-19 14:10:08,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 263 transitions, 2071 flow [2024-11-19 14:10:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 14:10:08,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 14:10:08,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 799 transitions. [2024-11-19 14:10:08,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5073015873015873 [2024-11-19 14:10:08,314 INFO L175 Difference]: Start difference. First operand has 194 places, 181 transitions, 1257 flow. Second operand 15 states and 799 transitions. [2024-11-19 14:10:08,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 263 transitions, 2071 flow [2024-11-19 14:10:08,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 263 transitions, 1996 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-11-19 14:10:08,379 INFO L231 Difference]: Finished difference. Result has 196 places, 185 transitions, 1384 flow [2024-11-19 14:10:08,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1384, PETRI_PLACES=196, PETRI_TRANSITIONS=185} [2024-11-19 14:10:08,380 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 96 predicate places. [2024-11-19 14:10:08,380 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 185 transitions, 1384 flow [2024-11-19 14:10:08,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 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) [2024-11-19 14:10:08,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:08,380 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:08,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 14:10:08,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:08,581 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:10:08,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348611, now seen corresponding path program 1 times [2024-11-19 14:10:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:08,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695106057] [2024-11-19 14:10:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:08,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:09,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:09,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695106057] [2024-11-19 14:10:09,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695106057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:09,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908743913] [2024-11-19 14:10:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:09,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:09,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:09,264 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:10:09,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 14:10:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:09,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 14:10:09,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:09,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:10:09,472 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 19 treesize of output 1 [2024-11-19 14:10:09,520 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 14:10:09,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-19 14:10:09,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:10:09,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:10:09,618 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:10:09,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:10:09,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:10:09,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:10:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:09,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:09,797 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_519 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_519) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2024-11-19 14:10:09,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:10:10,000 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2024-11-19 14:10:10,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:10:10,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2024-11-19 14:10:10,023 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 28 treesize of output 24 [2024-11-19 14:10:10,030 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 50 treesize of output 42 [2024-11-19 14:10:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2024-11-19 14:10:10,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908743913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:10,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:10,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2024-11-19 14:10:10,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077906860] [2024-11-19 14:10:10,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:10,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 14:10:10,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:10,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 14:10:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=608, Unknown=2, NotChecked=50, Total=756 [2024-11-19 14:10:10,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-11-19 14:10:10,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 185 transitions, 1384 flow. Second operand has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 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) [2024-11-19 14:10:10,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:10,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-11-19 14:10:10,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:13,804 INFO L124 PetriNetUnfolderBase]: 10143/17472 cut-off events. [2024-11-19 14:10:13,804 INFO L125 PetriNetUnfolderBase]: For 29694/31457 co-relation queries the response was YES. [2024-11-19 14:10:13,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53565 conditions, 17472 events. 10143/17472 cut-off events. For 29694/31457 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 130616 event pairs, 4958 based on Foata normal form. 329/15786 useless extension candidates. Maximal degree in co-relation 53422. Up to 9441 conditions per place. [2024-11-19 14:10:13,960 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 165 selfloop transitions, 58 changer transitions 0/262 dead transitions. [2024-11-19 14:10:13,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 262 transitions, 2143 flow [2024-11-19 14:10:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 14:10:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 14:10:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 798 transitions. [2024-11-19 14:10:13,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-11-19 14:10:13,962 INFO L175 Difference]: Start difference. First operand has 196 places, 185 transitions, 1384 flow. Second operand 15 states and 798 transitions. [2024-11-19 14:10:13,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 262 transitions, 2143 flow [2024-11-19 14:10:14,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 262 transitions, 2089 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:10:14,006 INFO L231 Difference]: Finished difference. Result has 206 places, 184 transitions, 1440 flow [2024-11-19 14:10:14,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1440, PETRI_PLACES=206, PETRI_TRANSITIONS=184} [2024-11-19 14:10:14,007 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 106 predicate places. [2024-11-19 14:10:14,007 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 184 transitions, 1440 flow [2024-11-19 14:10:14,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 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) [2024-11-19 14:10:14,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:14,008 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:14,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 14:10:14,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:14,209 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:10:14,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1001792412, now seen corresponding path program 2 times [2024-11-19 14:10:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:14,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056028892] [2024-11-19 14:10:14,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:10:14,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:14,237 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:10:14,240 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:10:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:10:14,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:14,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056028892] [2024-11-19 14:10:14,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056028892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:14,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:14,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:10:14,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44998856] [2024-11-19 14:10:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:14,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:10:14,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:14,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:10:14,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:10:14,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-19 14:10:14,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 184 transitions, 1440 flow. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2024-11-19 14:10:14,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:14,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-19 14:10:14,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:16,774 INFO L124 PetriNetUnfolderBase]: 10833/17352 cut-off events. [2024-11-19 14:10:16,775 INFO L125 PetriNetUnfolderBase]: For 44165/45636 co-relation queries the response was YES. [2024-11-19 14:10:16,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58774 conditions, 17352 events. 10833/17352 cut-off events. For 44165/45636 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 125217 event pairs, 2252 based on Foata normal form. 838/16299 useless extension candidates. Maximal degree in co-relation 58632. Up to 6800 conditions per place. [2024-11-19 14:10:16,923 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 207 selfloop transitions, 9 changer transitions 0/257 dead transitions. [2024-11-19 14:10:16,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 257 transitions, 2468 flow [2024-11-19 14:10:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-11-19 14:10:16,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2024-11-19 14:10:16,925 INFO L175 Difference]: Start difference. First operand has 206 places, 184 transitions, 1440 flow. Second operand 4 states and 296 transitions. [2024-11-19 14:10:16,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 257 transitions, 2468 flow [2024-11-19 14:10:16,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 257 transitions, 2359 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-19 14:10:16,967 INFO L231 Difference]: Finished difference. Result has 196 places, 183 transitions, 1363 flow [2024-11-19 14:10:16,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1363, PETRI_PLACES=196, PETRI_TRANSITIONS=183} [2024-11-19 14:10:16,968 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 96 predicate places. [2024-11-19 14:10:16,968 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 183 transitions, 1363 flow [2024-11-19 14:10:16,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2024-11-19 14:10:16,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:16,968 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:16,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 14:10:16,968 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:10:16,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:16,969 INFO L85 PathProgramCache]: Analyzing trace with hash -976053663, now seen corresponding path program 1 times [2024-11-19 14:10:16,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:16,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026129602] [2024-11-19 14:10:16,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:16,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:10:17,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:17,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026129602] [2024-11-19 14:10:17,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026129602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:17,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:17,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:10:17,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920627269] [2024-11-19 14:10:17,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:17,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:17,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:17,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-19 14:10:17,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 183 transitions, 1363 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2024-11-19 14:10:17,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:17,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-19 14:10:17,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:19,466 INFO L124 PetriNetUnfolderBase]: 10009/16224 cut-off events. [2024-11-19 14:10:19,466 INFO L125 PetriNetUnfolderBase]: For 42776/44245 co-relation queries the response was YES. [2024-11-19 14:10:19,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56844 conditions, 16224 events. 10009/16224 cut-off events. For 42776/44245 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 114241 event pairs, 6210 based on Foata normal form. 818/16039 useless extension candidates. Maximal degree in co-relation 56702. Up to 11307 conditions per place. [2024-11-19 14:10:20,071 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 163 selfloop transitions, 15 changer transitions 0/218 dead transitions. [2024-11-19 14:10:20,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 218 transitions, 1893 flow [2024-11-19 14:10:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:20,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2024-11-19 14:10:20,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-19 14:10:20,073 INFO L175 Difference]: Start difference. First operand has 196 places, 183 transitions, 1363 flow. Second operand 4 states and 288 transitions. [2024-11-19 14:10:20,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 218 transitions, 1893 flow [2024-11-19 14:10:20,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 218 transitions, 1843 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:10:20,129 INFO L231 Difference]: Finished difference. Result has 198 places, 184 transitions, 1399 flow [2024-11-19 14:10:20,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1399, PETRI_PLACES=198, PETRI_TRANSITIONS=184} [2024-11-19 14:10:20,130 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 98 predicate places. [2024-11-19 14:10:20,130 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 184 transitions, 1399 flow [2024-11-19 14:10:20,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2024-11-19 14:10:20,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:20,130 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:20,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 14:10:20,131 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:10:20,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:20,131 INFO L85 PathProgramCache]: Analyzing trace with hash -990792584, now seen corresponding path program 1 times [2024-11-19 14:10:20,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:20,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641268638] [2024-11-19 14:10:20,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:20,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:10:20,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:20,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641268638] [2024-11-19 14:10:20,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641268638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:20,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706675109] [2024-11-19 14:10:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:20,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:20,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:20,271 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:10:20,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 14:10:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:20,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:10:20,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:10:20,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:10:20,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706675109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:20,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:20,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:10:20,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124296318] [2024-11-19 14:10:20,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:20,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:10:20,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:20,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:10:20,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:10:20,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-11-19 14:10:20,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 184 transitions, 1399 flow. Second operand has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 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) [2024-11-19 14:10:20,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:20,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-11-19 14:10:20,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:24,433 INFO L124 PetriNetUnfolderBase]: 15957/26110 cut-off events. [2024-11-19 14:10:24,434 INFO L125 PetriNetUnfolderBase]: For 70354/72484 co-relation queries the response was YES. [2024-11-19 14:10:24,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87112 conditions, 26110 events. 15957/26110 cut-off events. For 70354/72484 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 199960 event pairs, 3782 based on Foata normal form. 630/23838 useless extension candidates. Maximal degree in co-relation 86968. Up to 10445 conditions per place. [2024-11-19 14:10:24,669 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 407 selfloop transitions, 15 changer transitions 0/465 dead transitions. [2024-11-19 14:10:24,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 465 transitions, 4433 flow [2024-11-19 14:10:24,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:10:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:10:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 745 transitions. [2024-11-19 14:10:24,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7095238095238096 [2024-11-19 14:10:24,670 INFO L175 Difference]: Start difference. First operand has 198 places, 184 transitions, 1399 flow. Second operand 10 states and 745 transitions. [2024-11-19 14:10:24,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 465 transitions, 4433 flow [2024-11-19 14:10:24,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 465 transitions, 4363 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:10:24,746 INFO L231 Difference]: Finished difference. Result has 209 places, 193 transitions, 1469 flow [2024-11-19 14:10:24,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1469, PETRI_PLACES=209, PETRI_TRANSITIONS=193} [2024-11-19 14:10:24,747 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 109 predicate places. [2024-11-19 14:10:24,747 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 193 transitions, 1469 flow [2024-11-19 14:10:24,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 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) [2024-11-19 14:10:24,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:24,747 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:24,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 14:10:24,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-19 14:10:24,948 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:10:24,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash -406020370, now seen corresponding path program 1 times [2024-11-19 14:10:24,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:24,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814801681] [2024-11-19 14:10:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:24,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:10:25,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:25,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814801681] [2024-11-19 14:10:25,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814801681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:25,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:25,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:10:25,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83285921] [2024-11-19 14:10:25,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:25,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:10:25,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:25,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:10:25,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:10:25,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 105 [2024-11-19 14:10:25,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 193 transitions, 1469 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-19 14:10:25,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:25,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 105 [2024-11-19 14:10:25,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:32,716 INFO L124 PetriNetUnfolderBase]: 29781/49500 cut-off events. [2024-11-19 14:10:32,717 INFO L125 PetriNetUnfolderBase]: For 149559/153442 co-relation queries the response was YES. [2024-11-19 14:10:33,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181516 conditions, 49500 events. 29781/49500 cut-off events. For 149559/153442 co-relation queries the response was YES. Maximal size of possible extension queue 1694. Compared 422200 event pairs, 22728 based on Foata normal form. 1213/48269 useless extension candidates. Maximal degree in co-relation 181369. Up to 20422 conditions per place. [2024-11-19 14:10:33,487 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 202 selfloop transitions, 19 changer transitions 0/260 dead transitions. [2024-11-19 14:10:33,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 260 transitions, 2447 flow [2024-11-19 14:10:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:10:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:10:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2024-11-19 14:10:33,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5961904761904762 [2024-11-19 14:10:33,489 INFO L175 Difference]: Start difference. First operand has 209 places, 193 transitions, 1469 flow. Second operand 5 states and 313 transitions. [2024-11-19 14:10:33,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 260 transitions, 2447 flow [2024-11-19 14:10:33,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 260 transitions, 2379 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-11-19 14:10:33,980 INFO L231 Difference]: Finished difference. Result has 211 places, 195 transitions, 1504 flow [2024-11-19 14:10:33,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1504, PETRI_PLACES=211, PETRI_TRANSITIONS=195} [2024-11-19 14:10:33,980 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 111 predicate places. [2024-11-19 14:10:33,980 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 195 transitions, 1504 flow [2024-11-19 14:10:33,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-19 14:10:33,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:33,981 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:33,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 14:10:33,981 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-19 14:10:33,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:33,982 INFO L85 PathProgramCache]: Analyzing trace with hash -684955916, now seen corresponding path program 1 times [2024-11-19 14:10:33,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:33,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404861901] [2024-11-19 14:10:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:33,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:10:34,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:34,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404861901] [2024-11-19 14:10:34,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404861901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:34,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592806931] [2024-11-19 14:10:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:34,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:34,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:34,235 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:10:34,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 14:10:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:34,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 14:10:34,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:10:34,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:10:34,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592806931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:34,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:34,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-19 14:10:34,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867356017] [2024-11-19 14:10:34,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:34,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 14:10:34,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:34,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 14:10:34,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-11-19 14:10:34,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 105 [2024-11-19 14:10:34,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 195 transitions, 1504 flow. Second operand has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 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) [2024-11-19 14:10:34,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:34,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 105 [2024-11-19 14:10:34,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand