./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/array-eq-trans.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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:07:19,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:07:19,584 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:07:19,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:07:19,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:07:19,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:07:19,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:07:19,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:07:19,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:07:19,615 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:07:19,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:07:19,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:07:19,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:07:19,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:07:19,618 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:07:19,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:07:19,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:07:19,619 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:07:19,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:07:19,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:07:19,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:07:19,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:07:19,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:07:19,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:07:19,622 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:07:19,622 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:07:19,622 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:07:19,622 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:07:19,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:07:19,623 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:07:19,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:07:19,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:07:19,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:07:19,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:07:19,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:07:19,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:07:19,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:07:19,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:07:19,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:07:19,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:07:19,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:07:19,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:07:19,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:07:19,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:07:19,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-11-09 15:07:19,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:07:19,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:07:19,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:07:19,950 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:07:19,950 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:07:19,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-09 15:07:21,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:07:21,551 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:07:21,552 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-09 15:07:21,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80790396/76e74264509c4835830e980658c376df/FLAG65d1854b2 [2024-11-09 15:07:21,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80790396/76e74264509c4835830e980658c376df [2024-11-09 15:07:21,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:07:21,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:07:21,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:07:21,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:07:21,579 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:07:21,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:21,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc0091c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21, skipping insertion in model container [2024-11-09 15:07:21,581 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:21,607 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:07:21,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:07:21,872 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:07:21,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:07:21,926 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:07:21,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21 WrapperNode [2024-11-09 15:07:21,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:07:21,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:07:21,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:07:21,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:07:21,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:21,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:21,975 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 202 [2024-11-09 15:07:21,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:07:21,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:07:21,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:07:21,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:07:21,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:21,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:21,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:22,016 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 15:07:22,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:22,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:22,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:22,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:22,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:22,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:22,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:07:22,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:07:22,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:07:22,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:07:22,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (1/1) ... [2024-11-09 15:07:22,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:07:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:22,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:07:22,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:07:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:07:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:07:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:07:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:07:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:07:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:07:22,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:07:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:07:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:07:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:07:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:07:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:07:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:07:22,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:07:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:07:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:07:22,118 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:07:22,225 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:07:22,227 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:07:22,640 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:07:22,641 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:07:23,006 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:07:23,007 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 15:07:23,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:07:23 BoogieIcfgContainer [2024-11-09 15:07:23,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:07:23,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:07:23,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:07:23,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:07:23,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:07:21" (1/3) ... [2024-11-09 15:07:23,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbd26a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:07:23, skipping insertion in model container [2024-11-09 15:07:23,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:21" (2/3) ... [2024-11-09 15:07:23,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbd26a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:07:23, skipping insertion in model container [2024-11-09 15:07:23,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:07:23" (3/3) ... [2024-11-09 15:07:23,018 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-11-09 15:07:23,037 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:07:23,037 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-09 15:07:23,038 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:07:23,095 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:07:23,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 145 flow [2024-11-09 15:07:23,174 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2024-11-09 15:07:23,174 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:07:23,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 9/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-09 15:07:23,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 62 transitions, 145 flow [2024-11-09 15:07:23,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 129 flow [2024-11-09 15:07:23,195 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:07:23,203 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;@64d57bb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:07:23,203 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-09 15:07:23,207 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:07:23,208 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:07:23,208 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:07:23,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:23,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:07:23,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:23,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:23,215 INFO L85 PathProgramCache]: Analyzing trace with hash 770478, now seen corresponding path program 1 times [2024-11-09 15:07:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:23,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174048276] [2024-11-09 15:07:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:23,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:23,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:23,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174048276] [2024-11-09 15:07:23,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174048276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:23,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:23,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:23,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109285914] [2024-11-09 15:07:23,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:23,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:23,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:23,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:23,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-09 15:07:23,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:23,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:23,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-09 15:07:23,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:24,076 INFO L124 PetriNetUnfolderBase]: 1728/2695 cut-off events. [2024-11-09 15:07:24,076 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-09 15:07:24,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 2695 events. 1728/2695 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14562 event pairs, 995 based on Foata normal form. 3/1816 useless extension candidates. Maximal degree in co-relation 4712. Up to 2276 conditions per place. [2024-11-09 15:07:24,103 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 41 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-11-09 15:07:24,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 249 flow [2024-11-09 15:07:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-09 15:07:24,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5201612903225806 [2024-11-09 15:07:24,120 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 4 states and 129 transitions. [2024-11-09 15:07:24,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 249 flow [2024-11-09 15:07:24,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:07:24,134 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 208 flow [2024-11-09 15:07:24,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2024-11-09 15:07:24,144 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-09 15:07:24,145 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 208 flow [2024-11-09 15:07:24,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:24,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:24,145 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:07:24,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:07:24,146 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:24,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1479239291, now seen corresponding path program 1 times [2024-11-09 15:07:24,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:24,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106262335] [2024-11-09 15:07:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:24,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:24,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106262335] [2024-11-09 15:07:24,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106262335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261720766] [2024-11-09 15:07:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:24,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:24,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:24,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:24,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:07:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:24,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:07:24,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:24,518 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:07:24,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261720766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:24,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:07:24,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:07:24,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999849665] [2024-11-09 15:07:24,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:24,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:07:24,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:24,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:07:24,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:07:24,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-09 15:07:24,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:24,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:24,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-09 15:07:24,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:24,870 INFO L124 PetriNetUnfolderBase]: 1728/2692 cut-off events. [2024-11-09 15:07:24,870 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-09 15:07:24,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 2692 events. 1728/2692 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14544 event pairs, 995 based on Foata normal form. 3/1818 useless extension candidates. Maximal degree in co-relation 5015. Up to 2261 conditions per place. [2024-11-09 15:07:24,889 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 31 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-11-09 15:07:24,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 292 flow [2024-11-09 15:07:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:07:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:07:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-09 15:07:24,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-11-09 15:07:24,893 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 208 flow. Second operand 6 states and 159 transitions. [2024-11-09 15:07:24,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 292 flow [2024-11-09 15:07:24,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:07:24,896 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 230 flow [2024-11-09 15:07:24,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-11-09 15:07:24,897 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-11-09 15:07:24,898 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 230 flow [2024-11-09 15:07:24,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:24,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:24,898 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:07:24,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:07:25,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:25,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:25,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1388221465, now seen corresponding path program 1 times [2024-11-09 15:07:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:25,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945639258] [2024-11-09 15:07:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:25,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945639258] [2024-11-09 15:07:25,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945639258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222700907] [2024-11-09 15:07:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:25,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:25,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:25,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:25,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:07:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:25,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:07:25,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:25,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:25,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222700907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:25,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:25,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:07:25,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578785158] [2024-11-09 15:07:25,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:25,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:07:25,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:07:25,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:07:25,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-09 15:07:25,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 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) [2024-11-09 15:07:25,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:25,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-09 15:07:25,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:25,803 INFO L124 PetriNetUnfolderBase]: 1737/2728 cut-off events. [2024-11-09 15:07:25,804 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-11-09 15:07:25,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 2728 events. 1737/2728 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14903 event pairs, 995 based on Foata normal form. 9/1860 useless extension candidates. Maximal degree in co-relation 5017. Up to 2276 conditions per place. [2024-11-09 15:07:25,819 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 38 selfloop transitions, 37 changer transitions 0/90 dead transitions. [2024-11-09 15:07:25,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 554 flow [2024-11-09 15:07:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:07:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:07:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-11-09 15:07:25,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-11-09 15:07:25,823 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 230 flow. Second operand 10 states and 264 transitions. [2024-11-09 15:07:25,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 554 flow [2024-11-09 15:07:25,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 471 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-09 15:07:25,827 INFO L231 Difference]: Finished difference. Result has 68 places, 90 transitions, 445 flow [2024-11-09 15:07:25,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=90} [2024-11-09 15:07:25,828 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-09 15:07:25,828 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 90 transitions, 445 flow [2024-11-09 15:07:25,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 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) [2024-11-09 15:07:25,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:25,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:25,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:07:26,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 15:07:26,029 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:26,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:26,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2068068255, now seen corresponding path program 1 times [2024-11-09 15:07:26,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:26,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606293685] [2024-11-09 15:07:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:26,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:26,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606293685] [2024-11-09 15:07:26,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606293685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:26,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:26,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:26,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706008218] [2024-11-09 15:07:26,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:26,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:26,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:26,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:26,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:26,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-09 15:07:26,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 90 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:26,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:26,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-09 15:07:26,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:26,350 INFO L124 PetriNetUnfolderBase]: 2009/3084 cut-off events. [2024-11-09 15:07:26,351 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-11-09 15:07:26,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 3084 events. 2009/3084 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 16788 event pairs, 829 based on Foata normal form. 86/2159 useless extension candidates. Maximal degree in co-relation 5880. Up to 1981 conditions per place. [2024-11-09 15:07:26,371 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 87 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-11-09 15:07:26,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 660 flow [2024-11-09 15:07:26,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-09 15:07:26,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5766129032258065 [2024-11-09 15:07:26,373 INFO L175 Difference]: Start difference. First operand has 68 places, 90 transitions, 445 flow. Second operand 4 states and 143 transitions. [2024-11-09 15:07:26,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 660 flow [2024-11-09 15:07:26,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 106 transitions, 623 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-09 15:07:26,378 INFO L231 Difference]: Finished difference. Result has 68 places, 89 transitions, 412 flow [2024-11-09 15:07:26,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=412, PETRI_PLACES=68, PETRI_TRANSITIONS=89} [2024-11-09 15:07:26,379 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-09 15:07:26,379 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 89 transitions, 412 flow [2024-11-09 15:07:26,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:26,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:26,380 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:26,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:07:26,380 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:26,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash -314392714, now seen corresponding path program 1 times [2024-11-09 15:07:26,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:26,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381480680] [2024-11-09 15:07:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:26,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:26,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381480680] [2024-11-09 15:07:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381480680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:26,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:26,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:26,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870386849] [2024-11-09 15:07:26,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:26,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:26,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:26,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:26,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:26,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-09 15:07:26,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 89 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:26,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:26,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-09 15:07:26,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:26,899 INFO L124 PetriNetUnfolderBase]: 3164/4652 cut-off events. [2024-11-09 15:07:26,899 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2024-11-09 15:07:26,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9464 conditions, 4652 events. 3164/4652 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24920 event pairs, 657 based on Foata normal form. 86/3558 useless extension candidates. Maximal degree in co-relation 9370. Up to 2383 conditions per place. [2024-11-09 15:07:26,928 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 112 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-09 15:07:26,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 738 flow [2024-11-09 15:07:26,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-09 15:07:26,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-11-09 15:07:26,930 INFO L175 Difference]: Start difference. First operand has 68 places, 89 transitions, 412 flow. Second operand 4 states and 168 transitions. [2024-11-09 15:07:26,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 738 flow [2024-11-09 15:07:26,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 131 transitions, 728 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:07:26,935 INFO L231 Difference]: Finished difference. Result has 70 places, 91 transitions, 426 flow [2024-11-09 15:07:26,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=70, PETRI_TRANSITIONS=91} [2024-11-09 15:07:26,936 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-11-09 15:07:26,936 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 91 transitions, 426 flow [2024-11-09 15:07:26,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:26,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:26,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:26,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:07:26,937 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:26,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1767512434, now seen corresponding path program 1 times [2024-11-09 15:07:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:26,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011411977] [2024-11-09 15:07:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:26,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011411977] [2024-11-09 15:07:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011411977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:26,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:27,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554899949] [2024-11-09 15:07:27,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:27,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:27,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:27,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:27,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-09 15:07:27,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:27,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:27,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-09 15:07:27,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:27,675 INFO L124 PetriNetUnfolderBase]: 5476/8026 cut-off events. [2024-11-09 15:07:27,675 INFO L125 PetriNetUnfolderBase]: For 1195/1297 co-relation queries the response was YES. [2024-11-09 15:07:27,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16805 conditions, 8026 events. 5476/8026 cut-off events. For 1195/1297 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 45427 event pairs, 1108 based on Foata normal form. 152/6208 useless extension candidates. Maximal degree in co-relation 16709. Up to 4449 conditions per place. [2024-11-09 15:07:27,718 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 116 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-11-09 15:07:27,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 134 transitions, 779 flow [2024-11-09 15:07:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-09 15:07:27,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733870967741935 [2024-11-09 15:07:27,720 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 426 flow. Second operand 4 states and 167 transitions. [2024-11-09 15:07:27,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 134 transitions, 779 flow [2024-11-09 15:07:27,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 134 transitions, 775 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:07:27,725 INFO L231 Difference]: Finished difference. Result has 74 places, 93 transitions, 446 flow [2024-11-09 15:07:27,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=74, PETRI_TRANSITIONS=93} [2024-11-09 15:07:27,726 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2024-11-09 15:07:27,726 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 93 transitions, 446 flow [2024-11-09 15:07:27,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:27,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:27,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:27,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:07:27,727 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:27,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1456205597, now seen corresponding path program 1 times [2024-11-09 15:07:27,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:27,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785369860] [2024-11-09 15:07:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:27,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785369860] [2024-11-09 15:07:27,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785369860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:27,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:27,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:27,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029974749] [2024-11-09 15:07:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:27,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:27,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:27,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-09 15:07:27,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 93 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:27,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:27,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-09 15:07:27,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:28,942 INFO L124 PetriNetUnfolderBase]: 8504/12528 cut-off events. [2024-11-09 15:07:28,943 INFO L125 PetriNetUnfolderBase]: For 3516/3966 co-relation queries the response was YES. [2024-11-09 15:07:28,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27627 conditions, 12528 events. 8504/12528 cut-off events. For 3516/3966 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 74671 event pairs, 2163 based on Foata normal form. 224/10503 useless extension candidates. Maximal degree in co-relation 27529. Up to 6413 conditions per place. [2024-11-09 15:07:29,020 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 119 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-11-09 15:07:29,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 824 flow [2024-11-09 15:07:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-09 15:07:29,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-09 15:07:29,022 INFO L175 Difference]: Start difference. First operand has 74 places, 93 transitions, 446 flow. Second operand 4 states and 164 transitions. [2024-11-09 15:07:29,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 824 flow [2024-11-09 15:07:29,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 137 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:07:29,027 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 466 flow [2024-11-09 15:07:29,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2024-11-09 15:07:29,028 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2024-11-09 15:07:29,028 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 466 flow [2024-11-09 15:07:29,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:29,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:29,028 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:29,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:07:29,030 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:29,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:29,030 INFO L85 PathProgramCache]: Analyzing trace with hash 130547706, now seen corresponding path program 1 times [2024-11-09 15:07:29,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:29,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994755815] [2024-11-09 15:07:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:07:29,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:29,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994755815] [2024-11-09 15:07:29,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994755815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:29,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:29,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:07:29,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776417367] [2024-11-09 15:07:29,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:29,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:29,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:29,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:29,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:29,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-09 15:07:29,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:29,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:29,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-09 15:07:29,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:30,392 INFO L124 PetriNetUnfolderBase]: 9178/14736 cut-off events. [2024-11-09 15:07:30,392 INFO L125 PetriNetUnfolderBase]: For 4978/5117 co-relation queries the response was YES. [2024-11-09 15:07:30,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33377 conditions, 14736 events. 9178/14736 cut-off events. For 4978/5117 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 101326 event pairs, 6652 based on Foata normal form. 0/13048 useless extension candidates. Maximal degree in co-relation 33220. Up to 9737 conditions per place. [2024-11-09 15:07:30,488 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 124 selfloop transitions, 10 changer transitions 0/151 dead transitions. [2024-11-09 15:07:30,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 151 transitions, 1002 flow [2024-11-09 15:07:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:07:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:07:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-11-09 15:07:30,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6258064516129033 [2024-11-09 15:07:30,491 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 466 flow. Second operand 5 states and 194 transitions. [2024-11-09 15:07:30,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 151 transitions, 1002 flow [2024-11-09 15:07:30,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 151 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:07:30,504 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 558 flow [2024-11-09 15:07:30,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-11-09 15:07:30,506 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-11-09 15:07:30,506 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 558 flow [2024-11-09 15:07:30,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:30,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:30,507 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:30,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:07:30,507 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:30,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1804449395, now seen corresponding path program 1 times [2024-11-09 15:07:30,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:30,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99930488] [2024-11-09 15:07:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:30,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:30,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:30,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99930488] [2024-11-09 15:07:30,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99930488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:30,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:30,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:07:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941565305] [2024-11-09 15:07:30,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:30,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:07:30,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:30,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:07:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:07:30,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-09 15:07:30,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:30,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:30,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-09 15:07:30,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:31,985 INFO L124 PetriNetUnfolderBase]: 11462/18144 cut-off events. [2024-11-09 15:07:31,985 INFO L125 PetriNetUnfolderBase]: For 6345/6757 co-relation queries the response was YES. [2024-11-09 15:07:32,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41392 conditions, 18144 events. 11462/18144 cut-off events. For 6345/6757 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 125296 event pairs, 4982 based on Foata normal form. 0/16680 useless extension candidates. Maximal degree in co-relation 41174. Up to 6489 conditions per place. [2024-11-09 15:07:32,252 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 139 selfloop transitions, 14 changer transitions 0/170 dead transitions. [2024-11-09 15:07:32,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 170 transitions, 1137 flow [2024-11-09 15:07:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:07:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:07:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-11-09 15:07:32,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6317204301075269 [2024-11-09 15:07:32,254 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 558 flow. Second operand 6 states and 235 transitions. [2024-11-09 15:07:32,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 170 transitions, 1137 flow [2024-11-09 15:07:32,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1133 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 15:07:32,269 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 637 flow [2024-11-09 15:07:32,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-11-09 15:07:32,271 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-11-09 15:07:32,271 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 637 flow [2024-11-09 15:07:32,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:32,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:32,272 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:07:32,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:07:32,272 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:32,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash 844002644, now seen corresponding path program 2 times [2024-11-09 15:07:32,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:32,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016202147] [2024-11-09 15:07:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:32,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:32,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:32,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016202147] [2024-11-09 15:07:32,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016202147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:32,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152135199] [2024-11-09 15:07:32,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:07:32,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:32,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:32,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:32,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:07:32,493 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:07:32,493 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:07:32,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:07:32,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:07:32,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:07:32,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152135199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:32,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:32,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:07:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375823640] [2024-11-09 15:07:32,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:32,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:07:32,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:07:32,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:07:32,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-09 15:07:32,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 637 flow. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:32,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:32,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-09 15:07:32,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:34,420 INFO L124 PetriNetUnfolderBase]: 11469/18852 cut-off events. [2024-11-09 15:07:34,421 INFO L125 PetriNetUnfolderBase]: For 7689/7729 co-relation queries the response was YES. [2024-11-09 15:07:34,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43454 conditions, 18852 events. 11469/18852 cut-off events. For 7689/7729 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 138441 event pairs, 8454 based on Foata normal form. 8/17969 useless extension candidates. Maximal degree in co-relation 43134. Up to 15729 conditions per place. [2024-11-09 15:07:34,545 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 40 selfloop transitions, 61 changer transitions 0/115 dead transitions. [2024-11-09 15:07:34,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 902 flow [2024-11-09 15:07:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:07:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:07:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 519 transitions. [2024-11-09 15:07:34,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3487903225806452 [2024-11-09 15:07:34,550 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 637 flow. Second operand 24 states and 519 transitions. [2024-11-09 15:07:34,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 902 flow [2024-11-09 15:07:34,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 888 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 15:07:34,576 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 833 flow [2024-11-09 15:07:34,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=833, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2024-11-09 15:07:34,576 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 53 predicate places. [2024-11-09 15:07:34,577 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 833 flow [2024-11-09 15:07:34,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:34,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:34,577 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:34,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:07:34,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:34,778 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:34,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:34,778 INFO L85 PathProgramCache]: Analyzing trace with hash 610272312, now seen corresponding path program 1 times [2024-11-09 15:07:34,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:34,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224699131] [2024-11-09 15:07:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:34,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:34,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:34,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224699131] [2024-11-09 15:07:34,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224699131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:34,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:34,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:07:34,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070784476] [2024-11-09 15:07:34,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:34,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:34,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:34,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:34,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:34,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-09 15:07:34,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 833 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:34,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:34,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-09 15:07:34,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:36,144 INFO L124 PetriNetUnfolderBase]: 9752/15640 cut-off events. [2024-11-09 15:07:36,145 INFO L125 PetriNetUnfolderBase]: For 6269/6469 co-relation queries the response was YES. [2024-11-09 15:07:36,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36428 conditions, 15640 events. 9752/15640 cut-off events. For 6269/6469 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 108079 event pairs, 7166 based on Foata normal form. 0/14999 useless extension candidates. Maximal degree in co-relation 36187. Up to 12337 conditions per place. [2024-11-09 15:07:36,228 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 130 selfloop transitions, 12 changer transitions 5/163 dead transitions. [2024-11-09 15:07:36,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 1428 flow [2024-11-09 15:07:36,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:07:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:07:36,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-09 15:07:36,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-11-09 15:07:36,230 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 833 flow. Second operand 5 states and 190 transitions. [2024-11-09 15:07:36,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 1428 flow [2024-11-09 15:07:36,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 163 transitions, 1225 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-11-09 15:07:36,245 INFO L231 Difference]: Finished difference. Result has 105 places, 114 transitions, 695 flow [2024-11-09 15:07:36,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=695, PETRI_PLACES=105, PETRI_TRANSITIONS=114} [2024-11-09 15:07:36,246 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places. [2024-11-09 15:07:36,246 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 114 transitions, 695 flow [2024-11-09 15:07:36,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:36,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:36,246 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:36,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:07:36,247 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:36,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1384429299, now seen corresponding path program 1 times [2024-11-09 15:07:36,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:36,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205676919] [2024-11-09 15:07:36,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:36,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:07:36,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:36,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205676919] [2024-11-09 15:07:36,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205676919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:36,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:36,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:07:36,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374138571] [2024-11-09 15:07:36,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:36,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:07:36,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:36,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:07:36,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:07:36,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-09 15:07:36,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 114 transitions, 695 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:36,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:36,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-09 15:07:36,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:37,381 INFO L124 PetriNetUnfolderBase]: 8401/12979 cut-off events. [2024-11-09 15:07:37,381 INFO L125 PetriNetUnfolderBase]: For 5611/6166 co-relation queries the response was YES. [2024-11-09 15:07:37,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31061 conditions, 12979 events. 8401/12979 cut-off events. For 5611/6166 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 82405 event pairs, 3460 based on Foata normal form. 67/12995 useless extension candidates. Maximal degree in co-relation 30838. Up to 5531 conditions per place. [2024-11-09 15:07:37,442 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 144 selfloop transitions, 14 changer transitions 3/177 dead transitions. [2024-11-09 15:07:37,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1273 flow [2024-11-09 15:07:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:07:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:07:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-11-09 15:07:37,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6263440860215054 [2024-11-09 15:07:37,444 INFO L175 Difference]: Start difference. First operand has 105 places, 114 transitions, 695 flow. Second operand 6 states and 233 transitions. [2024-11-09 15:07:37,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1273 flow [2024-11-09 15:07:37,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1249 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:07:37,457 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 704 flow [2024-11-09 15:07:37,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=704, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2024-11-09 15:07:37,458 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-11-09 15:07:37,458 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 704 flow [2024-11-09 15:07:37,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:37,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:37,459 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:37,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 15:07:37,459 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:37,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1148795679, now seen corresponding path program 1 times [2024-11-09 15:07:37,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:37,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301031661] [2024-11-09 15:07:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:37,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:07:37,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:37,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301031661] [2024-11-09 15:07:37,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301031661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:37,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:37,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:07:37,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479876496] [2024-11-09 15:07:37,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:37,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:07:37,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:37,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:07:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:07:37,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-09 15:07:37,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 704 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:37,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:37,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-09 15:07:37,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:38,989 INFO L124 PetriNetUnfolderBase]: 10798/17310 cut-off events. [2024-11-09 15:07:38,989 INFO L125 PetriNetUnfolderBase]: For 8586/8923 co-relation queries the response was YES. [2024-11-09 15:07:39,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41470 conditions, 17310 events. 10798/17310 cut-off events. For 8586/8923 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 120328 event pairs, 5144 based on Foata normal form. 262/17517 useless extension candidates. Maximal degree in co-relation 41247. Up to 6048 conditions per place. [2024-11-09 15:07:39,084 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 129 selfloop transitions, 19 changer transitions 1/165 dead transitions. [2024-11-09 15:07:39,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 165 transitions, 1172 flow [2024-11-09 15:07:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:07:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:07:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-11-09 15:07:39,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-09 15:07:39,088 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 704 flow. Second operand 5 states and 205 transitions. [2024-11-09 15:07:39,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 165 transitions, 1172 flow [2024-11-09 15:07:39,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1143 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:07:39,109 INFO L231 Difference]: Finished difference. Result has 108 places, 113 transitions, 709 flow [2024-11-09 15:07:39,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=709, PETRI_PLACES=108, PETRI_TRANSITIONS=113} [2024-11-09 15:07:39,111 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2024-11-09 15:07:39,111 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 113 transitions, 709 flow [2024-11-09 15:07:39,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:39,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:39,112 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-09 15:07:39,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:07:39,112 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:39,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:39,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1617871485, now seen corresponding path program 1 times [2024-11-09 15:07:39,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:39,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698799589] [2024-11-09 15:07:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:39,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:39,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:39,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698799589] [2024-11-09 15:07:39,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698799589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:39,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372263093] [2024-11-09 15:07:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:39,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:39,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:39,295 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) [2024-11-09 15:07:39,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:07:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:39,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 15:07:39,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:39,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:39,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372263093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:39,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:39,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-09 15:07:39,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121467515] [2024-11-09 15:07:39,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:39,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 15:07:39,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:39,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 15:07:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-09 15:07:39,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-09 15:07:39,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 113 transitions, 709 flow. Second operand has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:39,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:39,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-09 15:07:39,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:41,490 INFO L124 PetriNetUnfolderBase]: 10723/17788 cut-off events. [2024-11-09 15:07:41,491 INFO L125 PetriNetUnfolderBase]: For 10565/10597 co-relation queries the response was YES. [2024-11-09 15:07:41,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43070 conditions, 17788 events. 10723/17788 cut-off events. For 10565/10597 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 130493 event pairs, 7960 based on Foata normal form. 42/17671 useless extension candidates. Maximal degree in co-relation 42138. Up to 14797 conditions per place. [2024-11-09 15:07:41,631 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 43 selfloop transitions, 126 changer transitions 0/183 dead transitions. [2024-11-09 15:07:41,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 183 transitions, 1621 flow [2024-11-09 15:07:41,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 15:07:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 15:07:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 628 transitions. [2024-11-09 15:07:41,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38957816377171217 [2024-11-09 15:07:41,634 INFO L175 Difference]: Start difference. First operand has 108 places, 113 transitions, 709 flow. Second operand 26 states and 628 transitions. [2024-11-09 15:07:41,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 183 transitions, 1621 flow [2024-11-09 15:07:41,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 183 transitions, 1588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:07:41,666 INFO L231 Difference]: Finished difference. Result has 138 places, 183 transitions, 1586 flow [2024-11-09 15:07:41,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1586, PETRI_PLACES=138, PETRI_TRANSITIONS=183} [2024-11-09 15:07:41,667 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-11-09 15:07:41,667 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 183 transitions, 1586 flow [2024-11-09 15:07:41,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:41,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:41,668 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:41,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:07:41,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:41,873 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:41,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash -873364429, now seen corresponding path program 1 times [2024-11-09 15:07:41,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:41,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191876466] [2024-11-09 15:07:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:41,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:42,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:42,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191876466] [2024-11-09 15:07:42,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191876466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:42,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149053140] [2024-11-09 15:07:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:42,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:42,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:42,060 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) [2024-11-09 15:07:42,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:07:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:42,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:07:42,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:42,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:42,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149053140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:42,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:42,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-09 15:07:42,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919933049] [2024-11-09 15:07:42,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:42,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:07:42,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:07:42,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-09 15:07:42,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-09 15:07:42,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 183 transitions, 1586 flow. Second operand has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:42,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:42,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-09 15:07:42,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:48,543 INFO L124 PetriNetUnfolderBase]: 33758/52405 cut-off events. [2024-11-09 15:07:48,544 INFO L125 PetriNetUnfolderBase]: For 31274/32940 co-relation queries the response was YES. [2024-11-09 15:07:48,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128344 conditions, 52405 events. 33758/52405 cut-off events. For 31274/32940 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 413082 event pairs, 13312 based on Foata normal form. 870/52940 useless extension candidates. Maximal degree in co-relation 127706. Up to 7493 conditions per place. [2024-11-09 15:07:49,048 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 591 selfloop transitions, 268 changer transitions 40/912 dead transitions. [2024-11-09 15:07:49,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 912 transitions, 8602 flow [2024-11-09 15:07:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-09 15:07:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-09 15:07:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1182 transitions. [2024-11-09 15:07:49,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4056280027453672 [2024-11-09 15:07:49,053 INFO L175 Difference]: Start difference. First operand has 138 places, 183 transitions, 1586 flow. Second operand 47 states and 1182 transitions. [2024-11-09 15:07:49,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 912 transitions, 8602 flow [2024-11-09 15:07:49,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 912 transitions, 6929 flow, removed 600 selfloop flow, removed 12 redundant places. [2024-11-09 15:07:49,142 INFO L231 Difference]: Finished difference. Result has 184 places, 430 transitions, 3944 flow [2024-11-09 15:07:49,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3944, PETRI_PLACES=184, PETRI_TRANSITIONS=430} [2024-11-09 15:07:49,144 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 126 predicate places. [2024-11-09 15:07:49,144 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 430 transitions, 3944 flow [2024-11-09 15:07:49,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:49,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:49,144 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:49,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:07:49,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 15:07:49,345 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:49,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:49,346 INFO L85 PathProgramCache]: Analyzing trace with hash -553337275, now seen corresponding path program 1 times [2024-11-09 15:07:49,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:49,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8998648] [2024-11-09 15:07:49,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:49,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:07:49,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:49,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8998648] [2024-11-09 15:07:49,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8998648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:49,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:49,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:07:49,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237351933] [2024-11-09 15:07:49,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:49,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:07:49,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:49,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:07:49,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:07:49,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-09 15:07:49,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 430 transitions, 3944 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:49,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:49,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-09 15:07:49,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:53,901 INFO L124 PetriNetUnfolderBase]: 28077/44707 cut-off events. [2024-11-09 15:07:53,901 INFO L125 PetriNetUnfolderBase]: For 47741/48743 co-relation queries the response was YES. [2024-11-09 15:07:54,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115286 conditions, 44707 events. 28077/44707 cut-off events. For 47741/48743 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 354169 event pairs, 12342 based on Foata normal form. 236/44865 useless extension candidates. Maximal degree in co-relation 114697. Up to 19610 conditions per place. [2024-11-09 15:07:54,734 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 414 selfloop transitions, 40 changer transitions 15/485 dead transitions. [2024-11-09 15:07:54,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 485 transitions, 5132 flow [2024-11-09 15:07:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:07:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:07:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-11-09 15:07:54,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419354838709678 [2024-11-09 15:07:54,735 INFO L175 Difference]: Start difference. First operand has 184 places, 430 transitions, 3944 flow. Second operand 5 states and 199 transitions. [2024-11-09 15:07:54,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 485 transitions, 5132 flow [2024-11-09 15:07:54,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 485 transitions, 5055 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-09 15:07:54,825 INFO L231 Difference]: Finished difference. Result has 183 places, 426 transitions, 3900 flow [2024-11-09 15:07:54,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3900, PETRI_PLACES=183, PETRI_TRANSITIONS=426} [2024-11-09 15:07:54,826 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 125 predicate places. [2024-11-09 15:07:54,826 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 426 transitions, 3900 flow [2024-11-09 15:07:54,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:54,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:54,826 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:54,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 15:07:54,827 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:07:54,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:54,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1636799628, now seen corresponding path program 1 times [2024-11-09 15:07:54,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:54,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419158926] [2024-11-09 15:07:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:54,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:54,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419158926] [2024-11-09 15:07:54,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419158926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267655773] [2024-11-09 15:07:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:54,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:54,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:54,902 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) [2024-11-09 15:07:54,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:07:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:54,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:07:54,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:55,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:55,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267655773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:55,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:55,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-09 15:07:55,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502262435] [2024-11-09 15:07:55,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:55,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:07:55,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:55,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:07:55,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:07:55,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-09 15:07:55,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 426 transitions, 3900 flow. Second operand has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:55,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:55,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-09 15:07:55,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:59,780 INFO L124 PetriNetUnfolderBase]: 25309/38811 cut-off events. [2024-11-09 15:07:59,780 INFO L125 PetriNetUnfolderBase]: For 48412/49310 co-relation queries the response was YES. [2024-11-09 15:08:00,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103420 conditions, 38811 events. 25309/38811 cut-off events. For 48412/49310 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 287694 event pairs, 8714 based on Foata normal form. 882/39186 useless extension candidates. Maximal degree in co-relation 102816. Up to 8526 conditions per place. [2024-11-09 15:08:00,524 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 392 selfloop transitions, 194 changer transitions 12/610 dead transitions. [2024-11-09 15:08:00,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 610 transitions, 5926 flow [2024-11-09 15:08:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:08:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:08:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 466 transitions. [2024-11-09 15:08:00,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44212523719165087 [2024-11-09 15:08:00,526 INFO L175 Difference]: Start difference. First operand has 183 places, 426 transitions, 3900 flow. Second operand 17 states and 466 transitions. [2024-11-09 15:08:00,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 610 transitions, 5926 flow [2024-11-09 15:08:00,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 610 transitions, 5833 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:08:00,611 INFO L231 Difference]: Finished difference. Result has 196 places, 427 transitions, 4218 flow [2024-11-09 15:08:00,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4218, PETRI_PLACES=196, PETRI_TRANSITIONS=427} [2024-11-09 15:08:00,611 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 138 predicate places. [2024-11-09 15:08:00,612 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 427 transitions, 4218 flow [2024-11-09 15:08:00,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:00,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:00,612 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:00,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 15:08:00,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:08:00,813 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:08:00,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:00,813 INFO L85 PathProgramCache]: Analyzing trace with hash -168509946, now seen corresponding path program 1 times [2024-11-09 15:08:00,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:00,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921546572] [2024-11-09 15:08:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:00,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:08:00,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:00,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921546572] [2024-11-09 15:08:00,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921546572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:00,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063957282] [2024-11-09 15:08:00,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:00,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:00,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:00,930 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) [2024-11-09 15:08:00,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:08:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:01,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:08:01,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:01,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:01,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063957282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:01,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:01,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-11-09 15:08:01,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674912522] [2024-11-09 15:08:01,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:01,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:08:01,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:01,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:08:01,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:08:01,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-09 15:08:01,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 427 transitions, 4218 flow. Second operand has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:01,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:01,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-09 15:08:01,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:05,618 INFO L124 PetriNetUnfolderBase]: 22650/34631 cut-off events. [2024-11-09 15:08:05,619 INFO L125 PetriNetUnfolderBase]: For 53814/54182 co-relation queries the response was YES. [2024-11-09 15:08:05,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95673 conditions, 34631 events. 22650/34631 cut-off events. For 53814/54182 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 249922 event pairs, 8754 based on Foata normal form. 748/34948 useless extension candidates. Maximal degree in co-relation 95042. Up to 7803 conditions per place. [2024-11-09 15:08:05,939 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 450 selfloop transitions, 163 changer transitions 32/656 dead transitions. [2024-11-09 15:08:05,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 656 transitions, 6910 flow [2024-11-09 15:08:05,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:08:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:08:05,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 473 transitions. [2024-11-09 15:08:05,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4487666034155598 [2024-11-09 15:08:05,940 INFO L175 Difference]: Start difference. First operand has 196 places, 427 transitions, 4218 flow. Second operand 17 states and 473 transitions. [2024-11-09 15:08:05,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 656 transitions, 6910 flow [2024-11-09 15:08:06,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 656 transitions, 6749 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-11-09 15:08:06,019 INFO L231 Difference]: Finished difference. Result has 203 places, 426 transitions, 4460 flow [2024-11-09 15:08:06,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4460, PETRI_PLACES=203, PETRI_TRANSITIONS=426} [2024-11-09 15:08:06,020 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 145 predicate places. [2024-11-09 15:08:06,020 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 426 transitions, 4460 flow [2024-11-09 15:08:06,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:06,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:06,020 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:06,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 15:08:06,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:06,221 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:08:06,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash -260381577, now seen corresponding path program 1 times [2024-11-09 15:08:06,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:06,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881888545] [2024-11-09 15:08:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:06,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 15:08:06,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:06,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881888545] [2024-11-09 15:08:06,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881888545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:06,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756691078] [2024-11-09 15:08:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:06,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:06,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:06,313 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) [2024-11-09 15:08:06,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:08:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:06,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:08:06,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:06,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:06,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756691078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:06,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:06,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-09 15:08:06,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977055111] [2024-11-09 15:08:06,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:06,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:08:06,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:06,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:08:06,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:08:06,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-09 15:08:06,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 426 transitions, 4460 flow. Second operand has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:06,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:06,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-09 15:08:06,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:14,130 INFO L124 PetriNetUnfolderBase]: 42605/64528 cut-off events. [2024-11-09 15:08:14,131 INFO L125 PetriNetUnfolderBase]: For 109402/110136 co-relation queries the response was YES. [2024-11-09 15:08:14,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180402 conditions, 64528 events. 42605/64528 cut-off events. For 109402/110136 co-relation queries the response was YES. Maximal size of possible extension queue 1814. Compared 492051 event pairs, 13463 based on Foata normal form. 854/65185 useless extension candidates. Maximal degree in co-relation 179753. Up to 12343 conditions per place. [2024-11-09 15:08:14,921 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 274 selfloop transitions, 348 changer transitions 20/653 dead transitions. [2024-11-09 15:08:14,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 653 transitions, 6848 flow [2024-11-09 15:08:14,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 15:08:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 15:08:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 428 transitions. [2024-11-09 15:08:14,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4930875576036866 [2024-11-09 15:08:14,923 INFO L175 Difference]: Start difference. First operand has 203 places, 426 transitions, 4460 flow. Second operand 14 states and 428 transitions. [2024-11-09 15:08:14,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 653 transitions, 6848 flow [2024-11-09 15:08:15,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 653 transitions, 6574 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-11-09 15:08:15,084 INFO L231 Difference]: Finished difference. Result has 206 places, 431 transitions, 5003 flow [2024-11-09 15:08:15,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5003, PETRI_PLACES=206, PETRI_TRANSITIONS=431} [2024-11-09 15:08:15,085 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 148 predicate places. [2024-11-09 15:08:15,085 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 431 transitions, 5003 flow [2024-11-09 15:08:15,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:15,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:15,085 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:15,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 15:08:15,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:15,286 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:08:15,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:15,287 INFO L85 PathProgramCache]: Analyzing trace with hash -754914406, now seen corresponding path program 2 times [2024-11-09 15:08:15,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:15,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098459636] [2024-11-09 15:08:15,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:15,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:08:15,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:15,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098459636] [2024-11-09 15:08:15,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098459636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:15,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778611044] [2024-11-09 15:08:15,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:08:15,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:15,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:15,371 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) [2024-11-09 15:08:15,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:08:15,461 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:08:15,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:08:15,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:08:15,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 15:08:15,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 15:08:15,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778611044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:15,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:15,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2024-11-09 15:08:15,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678758660] [2024-11-09 15:08:15,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:15,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 15:08:15,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:15,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 15:08:15,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:08:15,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-09 15:08:15,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 431 transitions, 5003 flow. Second operand has 9 states, 9 states have (on average 25.333333333333332) internal successors, (228), 9 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) [2024-11-09 15:08:15,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:15,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-09 15:08:15,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand