./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-counter-queue.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 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:45:05,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:45:05,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:45:05,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:45:05,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:45:05,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:45:05,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:45:05,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:45:05,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:45:05,294 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:45:05,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:45:05,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:45:05,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:45:05,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:45:05,299 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:45:05,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:45:05,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:45:05,300 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:45:05,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:45:05,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:45:05,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:45:05,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:45:05,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:45:05,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:45:05,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:45:05,307 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:45:05,307 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:45:05,307 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:45:05,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:45:05,308 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:45:05,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:45:05,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:45:05,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:45:05,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:45:05,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:45:05,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:45:05,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:45:05,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:45:05,311 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:45:05,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:45:05,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:45:05,312 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:45:05,313 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:45:05,313 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:45:05,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 [2024-11-12 20:45:05,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:45:05,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:45:05,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:45:05,622 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:45:05,623 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:45:05,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-11-12 20:45:07,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:45:07,482 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:45:07,484 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-11-12 20:45:07,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/335c42536/1f68017d27714566b31dfe1e95d3c5b5/FLAGb114e6dc3 [2024-11-12 20:45:07,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/335c42536/1f68017d27714566b31dfe1e95d3c5b5 [2024-11-12 20:45:07,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:45:07,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:45:07,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:45:07,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:45:07,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:45:07,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dc9ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07, skipping insertion in model container [2024-11-12 20:45:07,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,567 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:45:07,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:45:07,787 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:45:07,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:45:07,826 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:45:07,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07 WrapperNode [2024-11-12 20:45:07,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:45:07,828 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:45:07,828 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:45:07,828 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:45:07,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,864 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 170 [2024-11-12 20:45:07,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:45:07,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:45:07,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:45:07,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:45:07,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,899 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-12 20:45:07,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:45:07,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:45:07,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:45:07,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:45:07,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (1/1) ... [2024-11-12 20:45:07,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:45:07,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:07,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 20:45:07,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 20:45:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:45:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:45:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:45:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:45:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:45:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:45:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:45:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:45:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:45:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:45:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:45:08,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:45:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:45:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:45:08,028 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:45:08,124 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:45:08,126 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:45:08,556 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:45:08,556 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:45:08,775 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:45:08,776 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 20:45:08,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:45:08 BoogieIcfgContainer [2024-11-12 20:45:08,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:45:08,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:45:08,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:45:08,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:45:08,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:45:07" (1/3) ... [2024-11-12 20:45:08,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b0f87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:45:08, skipping insertion in model container [2024-11-12 20:45:08,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:07" (2/3) ... [2024-11-12 20:45:08,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b0f87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:45:08, skipping insertion in model container [2024-11-12 20:45:08,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:45:08" (3/3) ... [2024-11-12 20:45:08,788 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-11-12 20:45:08,806 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:45:08,806 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-12 20:45:08,806 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:45:08,894 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 20:45:08,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 154 flow [2024-11-12 20:45:08,966 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2024-11-12 20:45:08,967 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:45:08,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 68 events. 7/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 194 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-11-12 20:45:08,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 154 flow [2024-11-12 20:45:08,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 66 transitions, 141 flow [2024-11-12 20:45:08,984 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:45:08,990 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;@20e4e57f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:45:08,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-12 20:45:08,994 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:45:08,995 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:45:08,995 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:45:08,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:08,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:45:08,996 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:09,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash 523687, now seen corresponding path program 1 times [2024-11-12 20:45:09,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:09,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473452868] [2024-11-12 20:45:09,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:09,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:09,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:09,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473452868] [2024-11-12 20:45:09,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473452868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:09,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:09,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:45:09,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002828794] [2024-11-12 20:45:09,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:09,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:09,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:09,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:09,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:09,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-12 20:45:09,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:09,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:09,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-12 20:45:09,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:09,738 INFO L124 PetriNetUnfolderBase]: 341/925 cut-off events. [2024-11-12 20:45:09,738 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-12 20:45:09,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 925 events. 341/925 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6071 event pairs, 222 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 1411. Up to 531 conditions per place. [2024-11-12 20:45:09,756 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 30 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-12 20:45:09,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 215 flow [2024-11-12 20:45:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-12 20:45:09,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-12 20:45:09,771 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 141 flow. Second operand 4 states and 184 transitions. [2024-11-12 20:45:09,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 215 flow [2024-11-12 20:45:09,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:45:09,786 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 165 flow [2024-11-12 20:45:09,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-11-12 20:45:09,792 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-11-12 20:45:09,795 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 165 flow [2024-11-12 20:45:09,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:09,796 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:09,796 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:45:09,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:45:09,797 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:09,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1578177431, now seen corresponding path program 1 times [2024-11-12 20:45:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:09,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663924002] [2024-11-12 20:45:09,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:09,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:09,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663924002] [2024-11-12 20:45:09,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663924002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:09,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384685613] [2024-11-12 20:45:09,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:09,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:09,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:09,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:45:10,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:45:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:10,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:45:10,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:10,128 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:45:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384685613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:10,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:45:10,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:45:10,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773798022] [2024-11-12 20:45:10,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:10,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:45:10,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:10,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:45:10,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:45:10,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-12 20:45:10,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:10,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:10,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-12 20:45:10,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:10,391 INFO L124 PetriNetUnfolderBase]: 341/924 cut-off events. [2024-11-12 20:45:10,392 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-12 20:45:10,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 924 events. 341/924 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6021 event pairs, 222 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 1461. Up to 526 conditions per place. [2024-11-12 20:45:10,401 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 26 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2024-11-12 20:45:10,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 227 flow [2024-11-12 20:45:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:45:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:45:10,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-11-12 20:45:10,406 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-11-12 20:45:10,408 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 165 flow. Second operand 6 states and 256 transitions. [2024-11-12 20:45:10,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 227 flow [2024-11-12 20:45:10,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:45:10,411 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 172 flow [2024-11-12 20:45:10,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-11-12 20:45:10,413 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-11-12 20:45:10,414 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 172 flow [2024-11-12 20:45:10,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:10,415 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:10,415 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:45:10,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:45:10,616 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 [2024-11-12 20:45:10,617 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:10,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1678859568, now seen corresponding path program 1 times [2024-11-12 20:45:10,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:10,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247557287] [2024-11-12 20:45:10,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:10,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:10,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:10,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247557287] [2024-11-12 20:45:10,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247557287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:10,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724414002] [2024-11-12 20:45:10,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:10,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:10,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:10,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:45:10,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:45:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:10,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:45:10,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:10,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:10,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:10,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724414002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:10,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:10,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:45:10,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403585994] [2024-11-12 20:45:10,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:10,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:45:10,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:10,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:45:10,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:45:10,881 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-12 20:45:10,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:10,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:10,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-12 20:45:10,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:11,134 INFO L124 PetriNetUnfolderBase]: 344/936 cut-off events. [2024-11-12 20:45:11,134 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-12 20:45:11,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 936 events. 344/936 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6164 event pairs, 222 based on Foata normal form. 3/732 useless extension candidates. Maximal degree in co-relation 1462. Up to 533 conditions per place. [2024-11-12 20:45:11,143 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 29 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-11-12 20:45:11,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 310 flow [2024-11-12 20:45:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 415 transitions. [2024-11-12 20:45:11,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-12 20:45:11,146 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 172 flow. Second operand 10 states and 415 transitions. [2024-11-12 20:45:11,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 77 transitions, 310 flow [2024-11-12 20:45:11,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 264 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-12 20:45:11,149 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 224 flow [2024-11-12 20:45:11,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-12 20:45:11,150 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-11-12 20:45:11,151 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 224 flow [2024-11-12 20:45:11,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:11,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:11,152 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:11,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:45:11,355 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 [2024-11-12 20:45:11,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:11,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:11,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1593866490, now seen corresponding path program 1 times [2024-11-12 20:45:11,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:11,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892514740] [2024-11-12 20:45:11,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:11,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:11,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:11,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892514740] [2024-11-12 20:45:11,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892514740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:11,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:11,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:11,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815501653] [2024-11-12 20:45:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:11,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:11,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:11,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:11,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:11,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-12 20:45:11,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:11,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:11,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-12 20:45:11,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:11,694 INFO L124 PetriNetUnfolderBase]: 628/1452 cut-off events. [2024-11-12 20:45:11,695 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-12 20:45:11,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1452 events. 628/1452 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9856 event pairs, 222 based on Foata normal form. 44/1202 useless extension candidates. Maximal degree in co-relation 2475. Up to 507 conditions per place. [2024-11-12 20:45:11,705 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 71 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-12 20:45:11,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 438 flow [2024-11-12 20:45:11,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:11,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:11,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-12 20:45:11,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2024-11-12 20:45:11,707 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 224 flow. Second operand 4 states and 199 transitions. [2024-11-12 20:45:11,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 438 flow [2024-11-12 20:45:11,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 106 transitions, 427 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-12 20:45:11,713 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 247 flow [2024-11-12 20:45:11,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-11-12 20:45:11,715 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-11-12 20:45:11,716 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 247 flow [2024-11-12 20:45:11,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:11,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:11,716 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:11,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:45:11,716 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:11,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:11,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2129746940, now seen corresponding path program 1 times [2024-11-12 20:45:11,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:11,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087525834] [2024-11-12 20:45:11,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:11,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:11,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:11,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087525834] [2024-11-12 20:45:11,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087525834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:11,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:11,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:45:11,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46984732] [2024-11-12 20:45:11,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:11,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:45:11,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:11,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:45:11,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:45:11,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 70 [2024-11-12 20:45:11,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:11,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:11,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 70 [2024-11-12 20:45:11,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:12,062 INFO L124 PetriNetUnfolderBase]: 511/1407 cut-off events. [2024-11-12 20:45:12,062 INFO L125 PetriNetUnfolderBase]: For 290/313 co-relation queries the response was YES. [2024-11-12 20:45:12,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 1407 events. 511/1407 cut-off events. For 290/313 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10159 event pairs, 320 based on Foata normal form. 35/1179 useless extension candidates. Maximal degree in co-relation 2461. Up to 660 conditions per place. [2024-11-12 20:45:12,076 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 66 selfloop transitions, 5 changer transitions 2/109 dead transitions. [2024-11-12 20:45:12,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 459 flow [2024-11-12 20:45:12,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:45:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:45:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 258 transitions. [2024-11-12 20:45:12,078 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7371428571428571 [2024-11-12 20:45:12,078 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 247 flow. Second operand 5 states and 258 transitions. [2024-11-12 20:45:12,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 459 flow [2024-11-12 20:45:12,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 459 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:45:12,083 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 272 flow [2024-11-12 20:45:12,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-12 20:45:12,084 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-11-12 20:45:12,084 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 272 flow [2024-11-12 20:45:12,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:12,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:12,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:12,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:45:12,085 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:12,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:12,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1363777961, now seen corresponding path program 1 times [2024-11-12 20:45:12,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:12,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513214723] [2024-11-12 20:45:12,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:12,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:12,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513214723] [2024-11-12 20:45:12,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513214723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:12,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:12,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137139105] [2024-11-12 20:45:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:12,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:12,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-12 20:45:12,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:12,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:12,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-12 20:45:12,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:12,428 INFO L124 PetriNetUnfolderBase]: 939/2223 cut-off events. [2024-11-12 20:45:12,429 INFO L125 PetriNetUnfolderBase]: For 815/843 co-relation queries the response was YES. [2024-11-12 20:45:12,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4442 conditions, 2223 events. 939/2223 cut-off events. For 815/843 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16393 event pairs, 343 based on Foata normal form. 80/1959 useless extension candidates. Maximal degree in co-relation 4403. Up to 804 conditions per place. [2024-11-12 20:45:12,447 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 81 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-12 20:45:12,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 116 transitions, 580 flow [2024-11-12 20:45:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-12 20:45:12,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7035714285714286 [2024-11-12 20:45:12,450 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 272 flow. Second operand 4 states and 197 transitions. [2024-11-12 20:45:12,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 116 transitions, 580 flow [2024-11-12 20:45:12,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 116 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:45:12,458 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 301 flow [2024-11-12 20:45:12,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-12 20:45:12,461 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-11-12 20:45:12,461 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 301 flow [2024-11-12 20:45:12,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:12,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:12,462 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:12,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:45:12,462 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:12,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:12,463 INFO L85 PathProgramCache]: Analyzing trace with hash -672555564, now seen corresponding path program 1 times [2024-11-12 20:45:12,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:12,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640896083] [2024-11-12 20:45:12,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:12,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:12,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640896083] [2024-11-12 20:45:12,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640896083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:12,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:12,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:45:12,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226888778] [2024-11-12 20:45:12,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:12,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:45:12,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:12,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:45:12,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:45:12,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 70 [2024-11-12 20:45:12,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:12,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:12,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 70 [2024-11-12 20:45:12,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:12,748 INFO L124 PetriNetUnfolderBase]: 581/1587 cut-off events. [2024-11-12 20:45:12,749 INFO L125 PetriNetUnfolderBase]: For 748/790 co-relation queries the response was YES. [2024-11-12 20:45:12,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 1587 events. 581/1587 cut-off events. For 748/790 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11857 event pairs, 397 based on Foata normal form. 31/1420 useless extension candidates. Maximal degree in co-relation 3227. Up to 847 conditions per place. [2024-11-12 20:45:12,761 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 42 selfloop transitions, 2 changer transitions 14/94 dead transitions. [2024-11-12 20:45:12,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 452 flow [2024-11-12 20:45:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:45:12,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:45:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-11-12 20:45:12,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6885714285714286 [2024-11-12 20:45:12,764 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 301 flow. Second operand 5 states and 241 transitions. [2024-11-12 20:45:12,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 452 flow [2024-11-12 20:45:12,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:45:12,769 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 294 flow [2024-11-12 20:45:12,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-11-12 20:45:12,770 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 30 predicate places. [2024-11-12 20:45:12,771 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 294 flow [2024-11-12 20:45:12,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:12,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:12,771 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:12,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:45:12,771 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:12,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:12,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1992599942, now seen corresponding path program 1 times [2024-11-12 20:45:12,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:12,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204201042] [2024-11-12 20:45:12,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:12,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:12,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204201042] [2024-11-12 20:45:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204201042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:12,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481934260] [2024-11-12 20:45:12,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:12,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:12,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:12,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:45:12,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:45:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:13,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 20:45:13,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:13,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:45:13,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 20:45:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:13,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:13,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-12 20:45:13,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-12 20:45:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:13,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481934260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:13,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:13,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:45:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436239341] [2024-11-12 20:45:13,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:13,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 20:45:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 20:45:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-12 20:45:13,418 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2024-11-12 20:45:13,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:13,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:13,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2024-11-12 20:45:13,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:14,057 INFO L124 PetriNetUnfolderBase]: 1225/3179 cut-off events. [2024-11-12 20:45:14,058 INFO L125 PetriNetUnfolderBase]: For 1688/1779 co-relation queries the response was YES. [2024-11-12 20:45:14,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6710 conditions, 3179 events. 1225/3179 cut-off events. For 1688/1779 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 24936 event pairs, 338 based on Foata normal form. 53/2869 useless extension candidates. Maximal degree in co-relation 6680. Up to 707 conditions per place. [2024-11-12 20:45:14,082 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 103 selfloop transitions, 18 changer transitions 0/155 dead transitions. [2024-11-12 20:45:14,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 155 transitions, 816 flow [2024-11-12 20:45:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:14,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2024-11-12 20:45:14,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6585714285714286 [2024-11-12 20:45:14,085 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 294 flow. Second operand 10 states and 461 transitions. [2024-11-12 20:45:14,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 155 transitions, 816 flow [2024-11-12 20:45:14,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 155 transitions, 772 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-11-12 20:45:14,092 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 385 flow [2024-11-12 20:45:14,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-11-12 20:45:14,093 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2024-11-12 20:45:14,093 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 385 flow [2024-11-12 20:45:14,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:14,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:14,094 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:14,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:45:14,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:14,295 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:14,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1641087252, now seen corresponding path program 1 times [2024-11-12 20:45:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:14,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948840932] [2024-11-12 20:45:14,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:14,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:14,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948840932] [2024-11-12 20:45:14,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948840932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:14,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972577956] [2024-11-12 20:45:14,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:14,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:14,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:14,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:45:14,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:45:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:14,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 20:45:14,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:14,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:45:14,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 20:45:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:14,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:14,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-12 20:45:14,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-12 20:45:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972577956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:14,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:14,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:45:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396627215] [2024-11-12 20:45:14,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:14,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 20:45:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 20:45:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-12 20:45:14,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-12 20:45:14,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 385 flow. Second operand has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:14,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:14,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-12 20:45:14,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:15,425 INFO L124 PetriNetUnfolderBase]: 1485/3465 cut-off events. [2024-11-12 20:45:15,426 INFO L125 PetriNetUnfolderBase]: For 2645/2760 co-relation queries the response was YES. [2024-11-12 20:45:15,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7973 conditions, 3465 events. 1485/3465 cut-off events. For 2645/2760 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 25963 event pairs, 456 based on Foata normal form. 91/3212 useless extension candidates. Maximal degree in co-relation 7934. Up to 911 conditions per place. [2024-11-12 20:45:15,452 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 107 selfloop transitions, 18 changer transitions 0/156 dead transitions. [2024-11-12 20:45:15,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 857 flow [2024-11-12 20:45:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 441 transitions. [2024-11-12 20:45:15,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-12 20:45:15,454 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 385 flow. Second operand 10 states and 441 transitions. [2024-11-12 20:45:15,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 857 flow [2024-11-12 20:45:15,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 156 transitions, 845 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 20:45:15,463 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 435 flow [2024-11-12 20:45:15,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=435, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2024-11-12 20:45:15,465 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 39 predicate places. [2024-11-12 20:45:15,465 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 435 flow [2024-11-12 20:45:15,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:15,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:15,465 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:15,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:45:15,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:15,666 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:15,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2006905042, now seen corresponding path program 1 times [2024-11-12 20:45:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:15,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897394263] [2024-11-12 20:45:15,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:15,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:15,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:15,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897394263] [2024-11-12 20:45:15,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897394263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:15,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420568643] [2024-11-12 20:45:15,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:15,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:15,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:15,834 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) [2024-11-12 20:45:15,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:45:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:15,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 20:45:15,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:15,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:45:15,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 20:45:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:15,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:16,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-12 20:45:16,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-12 20:45:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:16,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420568643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:16,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:16,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:45:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094011785] [2024-11-12 20:45:16,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:16,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 20:45:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 20:45:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-12 20:45:16,152 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2024-11-12 20:45:16,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 435 flow. Second operand has 13 states, 13 states have (on average 37.69230769230769) internal successors, (490), 13 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:16,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:16,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2024-11-12 20:45:16,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:17,046 INFO L124 PetriNetUnfolderBase]: 2343/5934 cut-off events. [2024-11-12 20:45:17,047 INFO L125 PetriNetUnfolderBase]: For 7088/7292 co-relation queries the response was YES. [2024-11-12 20:45:17,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13858 conditions, 5934 events. 2343/5934 cut-off events. For 7088/7292 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 50082 event pairs, 611 based on Foata normal form. 128/5414 useless extension candidates. Maximal degree in co-relation 13817. Up to 1385 conditions per place. [2024-11-12 20:45:17,091 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 139 selfloop transitions, 18 changer transitions 0/194 dead transitions. [2024-11-12 20:45:17,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 194 transitions, 1369 flow [2024-11-12 20:45:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 457 transitions. [2024-11-12 20:45:17,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6528571428571428 [2024-11-12 20:45:17,093 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 435 flow. Second operand 10 states and 457 transitions. [2024-11-12 20:45:17,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 194 transitions, 1369 flow [2024-11-12 20:45:17,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 194 transitions, 1297 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-12 20:45:17,107 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 518 flow [2024-11-12 20:45:17,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=518, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2024-11-12 20:45:17,108 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2024-11-12 20:45:17,108 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 518 flow [2024-11-12 20:45:17,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.69230769230769) internal successors, (490), 13 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:17,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:17,109 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:17,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 20:45:17,313 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,SelfDestructingSolverStorable9 [2024-11-12 20:45:17,314 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:17,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:17,315 INFO L85 PathProgramCache]: Analyzing trace with hash 665903325, now seen corresponding path program 1 times [2024-11-12 20:45:17,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:17,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625616528] [2024-11-12 20:45:17,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:17,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:17,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:17,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625616528] [2024-11-12 20:45:17,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625616528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:17,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:17,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:17,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807945432] [2024-11-12 20:45:17,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:17,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:17,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:17,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:17,386 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-12 20:45:17,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:17,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:17,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-12 20:45:17,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:18,156 INFO L124 PetriNetUnfolderBase]: 2693/6580 cut-off events. [2024-11-12 20:45:18,156 INFO L125 PetriNetUnfolderBase]: For 9501/9736 co-relation queries the response was YES. [2024-11-12 20:45:18,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16882 conditions, 6580 events. 2693/6580 cut-off events. For 9501/9736 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 55518 event pairs, 1059 based on Foata normal form. 203/6092 useless extension candidates. Maximal degree in co-relation 16839. Up to 2290 conditions per place. [2024-11-12 20:45:18,206 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 105 selfloop transitions, 8 changer transitions 0/145 dead transitions. [2024-11-12 20:45:18,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 145 transitions, 985 flow [2024-11-12 20:45:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-12 20:45:18,208 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-12 20:45:18,208 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 518 flow. Second operand 4 states and 196 transitions. [2024-11-12 20:45:18,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 145 transitions, 985 flow [2024-11-12 20:45:18,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 964 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-12 20:45:18,225 INFO L231 Difference]: Finished difference. Result has 108 places, 98 transitions, 500 flow [2024-11-12 20:45:18,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2024-11-12 20:45:18,226 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 42 predicate places. [2024-11-12 20:45:18,227 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 500 flow [2024-11-12 20:45:18,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:18,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:18,227 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:18,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:45:18,227 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:18,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash 665902300, now seen corresponding path program 1 times [2024-11-12 20:45:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:18,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332569854] [2024-11-12 20:45:18,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:18,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:45:18,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332569854] [2024-11-12 20:45:18,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332569854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:18,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:18,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:18,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68527105] [2024-11-12 20:45:18,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:18,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:45:18,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:18,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:45:18,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:45:18,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-12 20:45:18,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 500 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:18,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:18,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-12 20:45:18,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:19,436 INFO L124 PetriNetUnfolderBase]: 3978/9268 cut-off events. [2024-11-12 20:45:19,436 INFO L125 PetriNetUnfolderBase]: For 11970/12331 co-relation queries the response was YES. [2024-11-12 20:45:19,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23348 conditions, 9268 events. 3978/9268 cut-off events. For 11970/12331 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 80339 event pairs, 938 based on Foata normal form. 172/8679 useless extension candidates. Maximal degree in co-relation 23309. Up to 3970 conditions per place. [2024-11-12 20:45:19,581 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 165 selfloop transitions, 16 changer transitions 0/213 dead transitions. [2024-11-12 20:45:19,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 213 transitions, 1457 flow [2024-11-12 20:45:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:45:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:45:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 357 transitions. [2024-11-12 20:45:19,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2024-11-12 20:45:19,583 INFO L175 Difference]: Start difference. First operand has 108 places, 98 transitions, 500 flow. Second operand 7 states and 357 transitions. [2024-11-12 20:45:19,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 213 transitions, 1457 flow [2024-11-12 20:45:19,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 213 transitions, 1437 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:45:19,602 INFO L231 Difference]: Finished difference. Result has 117 places, 111 transitions, 623 flow [2024-11-12 20:45:19,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=623, PETRI_PLACES=117, PETRI_TRANSITIONS=111} [2024-11-12 20:45:19,603 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2024-11-12 20:45:19,603 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 111 transitions, 623 flow [2024-11-12 20:45:19,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:19,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:19,603 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:19,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:45:19,604 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:19,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2084482991, now seen corresponding path program 1 times [2024-11-12 20:45:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:19,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463203731] [2024-11-12 20:45:19,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:19,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:19,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:19,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463203731] [2024-11-12 20:45:19,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463203731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:19,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150841259] [2024-11-12 20:45:19,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:19,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:19,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:19,775 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) [2024-11-12 20:45:19,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:45:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:19,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 20:45:19,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:19,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:45:19,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 20:45:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:19,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:19,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-12 20:45:20,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-12 20:45:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:20,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150841259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:20,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:20,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:45:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046702797] [2024-11-12 20:45:20,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:20,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 20:45:20,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:20,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 20:45:20,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-12 20:45:20,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-12 20:45:20,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 111 transitions, 623 flow. Second operand has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:20,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:20,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-12 20:45:20,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:21,146 INFO L124 PetriNetUnfolderBase]: 3317/7605 cut-off events. [2024-11-12 20:45:21,146 INFO L125 PetriNetUnfolderBase]: For 13522/13939 co-relation queries the response was YES. [2024-11-12 20:45:21,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20184 conditions, 7605 events. 3317/7605 cut-off events. For 13522/13939 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 63879 event pairs, 943 based on Foata normal form. 263/7156 useless extension candidates. Maximal degree in co-relation 20139. Up to 2214 conditions per place. [2024-11-12 20:45:21,202 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 153 selfloop transitions, 18 changer transitions 0/212 dead transitions. [2024-11-12 20:45:21,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 212 transitions, 1612 flow [2024-11-12 20:45:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:21,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 437 transitions. [2024-11-12 20:45:21,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6242857142857143 [2024-11-12 20:45:21,205 INFO L175 Difference]: Start difference. First operand has 117 places, 111 transitions, 623 flow. Second operand 10 states and 437 transitions. [2024-11-12 20:45:21,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 212 transitions, 1612 flow [2024-11-12 20:45:21,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 212 transitions, 1606 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-12 20:45:21,231 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 683 flow [2024-11-12 20:45:21,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=683, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2024-11-12 20:45:21,232 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 62 predicate places. [2024-11-12 20:45:21,233 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 683 flow [2024-11-12 20:45:21,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:21,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:21,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:21,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 20:45:21,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:21,438 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:21,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:21,438 INFO L85 PathProgramCache]: Analyzing trace with hash -831864593, now seen corresponding path program 1 times [2024-11-12 20:45:21,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:21,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778802819] [2024-11-12 20:45:21,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:21,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:45:21,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:21,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778802819] [2024-11-12 20:45:21,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778802819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:21,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:21,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:45:21,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794425800] [2024-11-12 20:45:21,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:21,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:45:21,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:21,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:45:21,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:45:21,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-12 20:45:21,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 113 transitions, 683 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:21,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:21,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-12 20:45:21,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:22,917 INFO L124 PetriNetUnfolderBase]: 5162/11426 cut-off events. [2024-11-12 20:45:22,917 INFO L125 PetriNetUnfolderBase]: For 23545/23831 co-relation queries the response was YES. [2024-11-12 20:45:22,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33007 conditions, 11426 events. 5162/11426 cut-off events. For 23545/23831 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 100338 event pairs, 969 based on Foata normal form. 318/10743 useless extension candidates. Maximal degree in co-relation 32956. Up to 4317 conditions per place. [2024-11-12 20:45:22,995 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 225 selfloop transitions, 31 changer transitions 0/289 dead transitions. [2024-11-12 20:45:22,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 289 transitions, 2250 flow [2024-11-12 20:45:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:45:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 20:45:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 497 transitions. [2024-11-12 20:45:22,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-12 20:45:22,997 INFO L175 Difference]: Start difference. First operand has 128 places, 113 transitions, 683 flow. Second operand 11 states and 497 transitions. [2024-11-12 20:45:22,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 289 transitions, 2250 flow [2024-11-12 20:45:23,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 289 transitions, 2155 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-12 20:45:23,058 INFO L231 Difference]: Finished difference. Result has 134 places, 133 transitions, 881 flow [2024-11-12 20:45:23,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=881, PETRI_PLACES=134, PETRI_TRANSITIONS=133} [2024-11-12 20:45:23,060 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 68 predicate places. [2024-11-12 20:45:23,060 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 133 transitions, 881 flow [2024-11-12 20:45:23,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:23,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:23,060 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:23,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 20:45:23,061 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:23,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:23,061 INFO L85 PathProgramCache]: Analyzing trace with hash 194462868, now seen corresponding path program 1 times [2024-11-12 20:45:23,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:23,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998034268] [2024-11-12 20:45:23,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:23,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:45:23,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998034268] [2024-11-12 20:45:23,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998034268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:23,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:23,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:23,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903328364] [2024-11-12 20:45:23,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:23,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:45:23,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:45:23,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:45:23,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-12 20:45:23,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 133 transitions, 881 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:23,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:23,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-12 20:45:23,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:24,532 INFO L124 PetriNetUnfolderBase]: 4916/11170 cut-off events. [2024-11-12 20:45:24,532 INFO L125 PetriNetUnfolderBase]: For 27341/27768 co-relation queries the response was YES. [2024-11-12 20:45:24,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33121 conditions, 11170 events. 4916/11170 cut-off events. For 27341/27768 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 100020 event pairs, 1188 based on Foata normal form. 237/10768 useless extension candidates. Maximal degree in co-relation 33070. Up to 5238 conditions per place. [2024-11-12 20:45:24,591 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 182 selfloop transitions, 23 changer transitions 0/249 dead transitions. [2024-11-12 20:45:24,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 249 transitions, 2092 flow [2024-11-12 20:45:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:45:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:45:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 353 transitions. [2024-11-12 20:45:24,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7204081632653061 [2024-11-12 20:45:24,593 INFO L175 Difference]: Start difference. First operand has 134 places, 133 transitions, 881 flow. Second operand 7 states and 353 transitions. [2024-11-12 20:45:24,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 249 transitions, 2092 flow [2024-11-12 20:45:24,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 249 transitions, 2076 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-12 20:45:24,655 INFO L231 Difference]: Finished difference. Result has 144 places, 144 transitions, 1031 flow [2024-11-12 20:45:24,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1031, PETRI_PLACES=144, PETRI_TRANSITIONS=144} [2024-11-12 20:45:24,656 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 78 predicate places. [2024-11-12 20:45:24,656 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 144 transitions, 1031 flow [2024-11-12 20:45:24,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:24,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:24,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:24,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 20:45:24,657 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:24,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash 194463893, now seen corresponding path program 1 times [2024-11-12 20:45:24,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:24,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814620842] [2024-11-12 20:45:24,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:24,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:24,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814620842] [2024-11-12 20:45:24,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814620842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:24,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:24,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:24,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339779067] [2024-11-12 20:45:24,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:24,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:24,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:24,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:24,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:24,715 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-12 20:45:24,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 144 transitions, 1031 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:24,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:24,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-12 20:45:24,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:25,846 INFO L124 PetriNetUnfolderBase]: 3945/9749 cut-off events. [2024-11-12 20:45:25,846 INFO L125 PetriNetUnfolderBase]: For 26816/27151 co-relation queries the response was YES. [2024-11-12 20:45:25,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30372 conditions, 9749 events. 3945/9749 cut-off events. For 26816/27151 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 90358 event pairs, 1455 based on Foata normal form. 305/9456 useless extension candidates. Maximal degree in co-relation 30315. Up to 3269 conditions per place. [2024-11-12 20:45:25,910 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 146 selfloop transitions, 14 changer transitions 0/215 dead transitions. [2024-11-12 20:45:25,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 215 transitions, 1918 flow [2024-11-12 20:45:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:25,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-11-12 20:45:25,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6928571428571428 [2024-11-12 20:45:25,912 INFO L175 Difference]: Start difference. First operand has 144 places, 144 transitions, 1031 flow. Second operand 4 states and 194 transitions. [2024-11-12 20:45:25,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 215 transitions, 1918 flow [2024-11-12 20:45:25,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 215 transitions, 1910 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 20:45:25,998 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 1034 flow [2024-11-12 20:45:25,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1034, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2024-11-12 20:45:25,998 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 80 predicate places. [2024-11-12 20:45:25,999 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 1034 flow [2024-11-12 20:45:25,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:25,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:25,999 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:25,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 20:45:25,999 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:26,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:26,000 INFO L85 PathProgramCache]: Analyzing trace with hash 929319074, now seen corresponding path program 1 times [2024-11-12 20:45:26,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:26,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42919947] [2024-11-12 20:45:26,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:26,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:26,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42919947] [2024-11-12 20:45:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42919947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:26,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:45:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297153272] [2024-11-12 20:45:26,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:26,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:45:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:45:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:45:26,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2024-11-12 20:45:26,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 1034 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:26,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:26,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2024-11-12 20:45:26,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:27,348 INFO L124 PetriNetUnfolderBase]: 4428/9840 cut-off events. [2024-11-12 20:45:27,349 INFO L125 PetriNetUnfolderBase]: For 29028/29434 co-relation queries the response was YES. [2024-11-12 20:45:27,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31693 conditions, 9840 events. 4428/9840 cut-off events. For 29028/29434 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 85023 event pairs, 1616 based on Foata normal form. 238/9612 useless extension candidates. Maximal degree in co-relation 31636. Up to 3747 conditions per place. [2024-11-12 20:45:27,400 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 183 selfloop transitions, 20 changer transitions 0/251 dead transitions. [2024-11-12 20:45:27,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 251 transitions, 2221 flow [2024-11-12 20:45:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:45:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:45:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2024-11-12 20:45:27,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-11-12 20:45:27,401 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 1034 flow. Second operand 6 states and 279 transitions. [2024-11-12 20:45:27,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 251 transitions, 2221 flow [2024-11-12 20:45:27,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 251 transitions, 2111 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-12 20:45:27,477 INFO L231 Difference]: Finished difference. Result has 148 places, 143 transitions, 1051 flow [2024-11-12 20:45:27,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1051, PETRI_PLACES=148, PETRI_TRANSITIONS=143} [2024-11-12 20:45:27,477 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 82 predicate places. [2024-11-12 20:45:27,477 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 143 transitions, 1051 flow [2024-11-12 20:45:27,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:27,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:27,478 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:27,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 20:45:27,478 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:27,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:27,478 INFO L85 PathProgramCache]: Analyzing trace with hash 929318049, now seen corresponding path program 1 times [2024-11-12 20:45:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:27,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859664973] [2024-11-12 20:45:27,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:27,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:27,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:27,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859664973] [2024-11-12 20:45:27,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859664973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:27,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:27,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:27,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933656470] [2024-11-12 20:45:27,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:27,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:27,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:27,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:27,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:27,549 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-12 20:45:27,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 143 transitions, 1051 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:27,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:27,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-12 20:45:27,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:28,551 INFO L124 PetriNetUnfolderBase]: 4804/10528 cut-off events. [2024-11-12 20:45:28,551 INFO L125 PetriNetUnfolderBase]: For 30754/31172 co-relation queries the response was YES. [2024-11-12 20:45:28,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34099 conditions, 10528 events. 4804/10528 cut-off events. For 30754/31172 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 90931 event pairs, 1853 based on Foata normal form. 380/10478 useless extension candidates. Maximal degree in co-relation 34042. Up to 4270 conditions per place. [2024-11-12 20:45:28,621 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 127 selfloop transitions, 17 changer transitions 0/197 dead transitions. [2024-11-12 20:45:28,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 197 transitions, 1695 flow [2024-11-12 20:45:28,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-12 20:45:28,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-11-12 20:45:28,622 INFO L175 Difference]: Start difference. First operand has 148 places, 143 transitions, 1051 flow. Second operand 4 states and 200 transitions. [2024-11-12 20:45:28,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 197 transitions, 1695 flow [2024-11-12 20:45:28,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 197 transitions, 1649 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-12 20:45:28,709 INFO L231 Difference]: Finished difference. Result has 149 places, 143 transitions, 1066 flow [2024-11-12 20:45:28,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1066, PETRI_PLACES=149, PETRI_TRANSITIONS=143} [2024-11-12 20:45:28,710 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 83 predicate places. [2024-11-12 20:45:28,710 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 143 transitions, 1066 flow [2024-11-12 20:45:28,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:28,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:28,710 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-12 20:45:28,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 20:45:28,710 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:28,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:28,711 INFO L85 PathProgramCache]: Analyzing trace with hash 217487314, now seen corresponding path program 2 times [2024-11-12 20:45:28,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:28,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165948127] [2024-11-12 20:45:28,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:28,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165948127] [2024-11-12 20:45:28,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165948127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150286355] [2024-11-12 20:45:28,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:45:28,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:28,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:28,897 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) [2024-11-12 20:45:28,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:45:28,967 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:45:28,968 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:28,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:45:28,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:45:29,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:45:29,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150286355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:29,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:29,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-12 20:45:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239579234] [2024-11-12 20:45:29,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:29,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:45:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:45:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:45:29,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-12 20:45:29,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 143 transitions, 1066 flow. Second operand has 14 states, 14 states have (on average 38.142857142857146) internal successors, (534), 14 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) [2024-11-12 20:45:29,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:29,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-12 20:45:29,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:30,163 INFO L124 PetriNetUnfolderBase]: 3061/8206 cut-off events. [2024-11-12 20:45:30,164 INFO L125 PetriNetUnfolderBase]: For 25896/26221 co-relation queries the response was YES. [2024-11-12 20:45:30,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26447 conditions, 8206 events. 3061/8206 cut-off events. For 25896/26221 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 77444 event pairs, 1992 based on Foata normal form. 192/7920 useless extension candidates. Maximal degree in co-relation 26379. Up to 4735 conditions per place. [2024-11-12 20:45:30,241 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 65 selfloop transitions, 18 changer transitions 0/145 dead transitions. [2024-11-12 20:45:30,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 145 transitions, 1246 flow [2024-11-12 20:45:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:45:30,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:45:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 563 transitions. [2024-11-12 20:45:30,243 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5744897959183674 [2024-11-12 20:45:30,243 INFO L175 Difference]: Start difference. First operand has 149 places, 143 transitions, 1066 flow. Second operand 14 states and 563 transitions. [2024-11-12 20:45:30,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 145 transitions, 1246 flow [2024-11-12 20:45:30,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 145 transitions, 1219 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-12 20:45:30,316 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 1089 flow [2024-11-12 20:45:30,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1089, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-11-12 20:45:30,316 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 90 predicate places. [2024-11-12 20:45:30,316 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 1089 flow [2024-11-12 20:45:30,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.142857142857146) internal successors, (534), 14 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) [2024-11-12 20:45:30,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:30,317 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:30,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:30,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:30,518 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:30,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:30,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1733382226, now seen corresponding path program 1 times [2024-11-12 20:45:30,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:30,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694238043] [2024-11-12 20:45:30,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:45:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694238043] [2024-11-12 20:45:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694238043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:30,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:30,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:45:30,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576105502] [2024-11-12 20:45:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:30,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:45:30,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:45:30,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:45:30,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-12 20:45:30,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 1089 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:30,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:30,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-12 20:45:30,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:32,188 INFO L124 PetriNetUnfolderBase]: 6241/12846 cut-off events. [2024-11-12 20:45:32,188 INFO L125 PetriNetUnfolderBase]: For 43895/44659 co-relation queries the response was YES. [2024-11-12 20:45:32,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42863 conditions, 12846 events. 6241/12846 cut-off events. For 43895/44659 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 109741 event pairs, 1240 based on Foata normal form. 539/12713 useless extension candidates. Maximal degree in co-relation 42726. Up to 5621 conditions per place. [2024-11-12 20:45:32,336 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 268 selfloop transitions, 38 changer transitions 0/345 dead transitions. [2024-11-12 20:45:32,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 345 transitions, 3119 flow [2024-11-12 20:45:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:45:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 20:45:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 495 transitions. [2024-11-12 20:45:32,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-12 20:45:32,339 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 1089 flow. Second operand 11 states and 495 transitions. [2024-11-12 20:45:32,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 345 transitions, 3119 flow [2024-11-12 20:45:32,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 345 transitions, 3051 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-12 20:45:32,465 INFO L231 Difference]: Finished difference. Result has 157 places, 165 transitions, 1299 flow [2024-11-12 20:45:32,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1299, PETRI_PLACES=157, PETRI_TRANSITIONS=165} [2024-11-12 20:45:32,466 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 91 predicate places. [2024-11-12 20:45:32,466 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 165 transitions, 1299 flow [2024-11-12 20:45:32,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:32,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:32,466 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:32,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 20:45:32,466 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:32,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:32,467 INFO L85 PathProgramCache]: Analyzing trace with hash -527410070, now seen corresponding path program 1 times [2024-11-12 20:45:32,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:32,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338917527] [2024-11-12 20:45:32,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:32,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:32,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:32,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338917527] [2024-11-12 20:45:32,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338917527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:32,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:32,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:32,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856638956] [2024-11-12 20:45:32,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:32,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:32,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:32,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:32,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:32,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-12 20:45:32,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 165 transitions, 1299 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:32,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:32,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-12 20:45:32,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:33,966 INFO L124 PetriNetUnfolderBase]: 4719/10600 cut-off events. [2024-11-12 20:45:33,967 INFO L125 PetriNetUnfolderBase]: For 40783/41228 co-relation queries the response was YES. [2024-11-12 20:45:34,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37462 conditions, 10600 events. 4719/10600 cut-off events. For 40783/41228 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 94435 event pairs, 2407 based on Foata normal form. 367/10526 useless extension candidates. Maximal degree in co-relation 35879. Up to 5736 conditions per place. [2024-11-12 20:45:34,068 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 171 selfloop transitions, 8 changer transitions 0/240 dead transitions. [2024-11-12 20:45:34,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 240 transitions, 2261 flow [2024-11-12 20:45:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-12 20:45:34,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-11-12 20:45:34,070 INFO L175 Difference]: Start difference. First operand has 157 places, 165 transitions, 1299 flow. Second operand 4 states and 203 transitions. [2024-11-12 20:45:34,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 240 transitions, 2261 flow [2024-11-12 20:45:34,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 240 transitions, 2237 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-12 20:45:34,198 INFO L231 Difference]: Finished difference. Result has 161 places, 166 transitions, 1330 flow [2024-11-12 20:45:34,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1330, PETRI_PLACES=161, PETRI_TRANSITIONS=166} [2024-11-12 20:45:34,198 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 95 predicate places. [2024-11-12 20:45:34,199 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 166 transitions, 1330 flow [2024-11-12 20:45:34,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:34,199 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:34,199 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:34,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 20:45:34,199 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:34,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:34,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1152409159, now seen corresponding path program 1 times [2024-11-12 20:45:34,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:34,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485081998] [2024-11-12 20:45:34,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:34,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:34,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:34,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485081998] [2024-11-12 20:45:34,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485081998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:34,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:34,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:34,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947774104] [2024-11-12 20:45:34,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:34,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:34,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:34,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:34,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:34,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-12 20:45:34,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 166 transitions, 1330 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:34,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:34,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-12 20:45:34,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:35,633 INFO L124 PetriNetUnfolderBase]: 5412/11445 cut-off events. [2024-11-12 20:45:35,633 INFO L125 PetriNetUnfolderBase]: For 47323/47937 co-relation queries the response was YES. [2024-11-12 20:45:35,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41409 conditions, 11445 events. 5412/11445 cut-off events. For 47323/47937 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 98371 event pairs, 2037 based on Foata normal form. 530/11492 useless extension candidates. Maximal degree in co-relation 39681. Up to 4858 conditions per place. [2024-11-12 20:45:35,738 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 166 selfloop transitions, 17 changer transitions 0/245 dead transitions. [2024-11-12 20:45:35,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 245 transitions, 2400 flow [2024-11-12 20:45:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-12 20:45:35,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2024-11-12 20:45:35,740 INFO L175 Difference]: Start difference. First operand has 161 places, 166 transitions, 1330 flow. Second operand 4 states and 198 transitions. [2024-11-12 20:45:35,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 245 transitions, 2400 flow [2024-11-12 20:45:35,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 245 transitions, 2388 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-12 20:45:35,868 INFO L231 Difference]: Finished difference. Result has 165 places, 166 transitions, 1383 flow [2024-11-12 20:45:35,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1383, PETRI_PLACES=165, PETRI_TRANSITIONS=166} [2024-11-12 20:45:35,869 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 99 predicate places. [2024-11-12 20:45:35,869 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 166 transitions, 1383 flow [2024-11-12 20:45:35,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:35,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:35,870 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:35,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 20:45:35,870 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:35,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1152408134, now seen corresponding path program 1 times [2024-11-12 20:45:35,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:35,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567594660] [2024-11-12 20:45:35,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:35,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:35,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567594660] [2024-11-12 20:45:35,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567594660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:35,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:45:35,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294977094] [2024-11-12 20:45:35,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:35,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:45:35,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:45:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:45:35,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2024-11-12 20:45:35,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 166 transitions, 1383 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:35,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:35,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2024-11-12 20:45:35,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:37,054 INFO L124 PetriNetUnfolderBase]: 4865/10412 cut-off events. [2024-11-12 20:45:37,055 INFO L125 PetriNetUnfolderBase]: For 49248/49819 co-relation queries the response was YES. [2024-11-12 20:45:37,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39296 conditions, 10412 events. 4865/10412 cut-off events. For 49248/49819 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 88435 event pairs, 1711 based on Foata normal form. 362/10405 useless extension candidates. Maximal degree in co-relation 37605. Up to 4220 conditions per place. [2024-11-12 20:45:37,225 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 247 selfloop transitions, 20 changer transitions 0/323 dead transitions. [2024-11-12 20:45:37,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 323 transitions, 3314 flow [2024-11-12 20:45:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:45:37,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:45:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-12 20:45:37,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-12 20:45:37,227 INFO L175 Difference]: Start difference. First operand has 165 places, 166 transitions, 1383 flow. Second operand 6 states and 275 transitions. [2024-11-12 20:45:37,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 323 transitions, 3314 flow [2024-11-12 20:45:37,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 323 transitions, 3263 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-12 20:45:37,370 INFO L231 Difference]: Finished difference. Result has 167 places, 167 transitions, 1391 flow [2024-11-12 20:45:37,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1391, PETRI_PLACES=167, PETRI_TRANSITIONS=167} [2024-11-12 20:45:37,371 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 101 predicate places. [2024-11-12 20:45:37,371 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 167 transitions, 1391 flow [2024-11-12 20:45:37,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:37,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:37,372 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:37,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-12 20:45:37,372 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:37,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:37,372 INFO L85 PathProgramCache]: Analyzing trace with hash -116208225, now seen corresponding path program 1 times [2024-11-12 20:45:37,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:37,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918598235] [2024-11-12 20:45:37,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:37,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:37,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:37,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918598235] [2024-11-12 20:45:37,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918598235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:37,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:37,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:37,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417717283] [2024-11-12 20:45:37,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:37,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:37,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:37,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:37,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:37,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-12 20:45:37,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 167 transitions, 1391 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:37,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:37,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-12 20:45:37,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:38,646 INFO L124 PetriNetUnfolderBase]: 3697/8836 cut-off events. [2024-11-12 20:45:38,646 INFO L125 PetriNetUnfolderBase]: For 43471/43932 co-relation queries the response was YES. [2024-11-12 20:45:38,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33836 conditions, 8836 events. 3697/8836 cut-off events. For 43471/43932 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 79078 event pairs, 1290 based on Foata normal form. 366/9054 useless extension candidates. Maximal degree in co-relation 31182. Up to 3187 conditions per place. [2024-11-12 20:45:38,739 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 170 selfloop transitions, 4 changer transitions 0/243 dead transitions. [2024-11-12 20:45:38,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 243 transitions, 2381 flow [2024-11-12 20:45:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:38,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-12 20:45:38,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2024-11-12 20:45:38,741 INFO L175 Difference]: Start difference. First operand has 167 places, 167 transitions, 1391 flow. Second operand 4 states and 216 transitions. [2024-11-12 20:45:38,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 243 transitions, 2381 flow [2024-11-12 20:45:38,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 243 transitions, 2305 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-12 20:45:38,865 INFO L231 Difference]: Finished difference. Result has 169 places, 168 transitions, 1380 flow [2024-11-12 20:45:38,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1380, PETRI_PLACES=169, PETRI_TRANSITIONS=168} [2024-11-12 20:45:38,866 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 103 predicate places. [2024-11-12 20:45:38,866 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 168 transitions, 1380 flow [2024-11-12 20:45:38,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:38,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:38,866 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:38,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 20:45:38,867 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:38,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash -636444051, now seen corresponding path program 1 times [2024-11-12 20:45:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883983180] [2024-11-12 20:45:38,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:38,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:38,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883983180] [2024-11-12 20:45:38,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883983180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:38,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:38,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:38,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119841570] [2024-11-12 20:45:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:38,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:38,941 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-12 20:45:38,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 168 transitions, 1380 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:38,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:38,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-12 20:45:38,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:40,210 INFO L124 PetriNetUnfolderBase]: 4837/10286 cut-off events. [2024-11-12 20:45:40,210 INFO L125 PetriNetUnfolderBase]: For 49784/50390 co-relation queries the response was YES. [2024-11-12 20:45:40,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39757 conditions, 10286 events. 4837/10286 cut-off events. For 49784/50390 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 86970 event pairs, 2474 based on Foata normal form. 510/10572 useless extension candidates. Maximal degree in co-relation 38022. Up to 5900 conditions per place. [2024-11-12 20:45:40,329 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 181 selfloop transitions, 8 changer transitions 0/249 dead transitions. [2024-11-12 20:45:40,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 249 transitions, 2506 flow [2024-11-12 20:45:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-12 20:45:40,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7178571428571429 [2024-11-12 20:45:40,331 INFO L175 Difference]: Start difference. First operand has 169 places, 168 transitions, 1380 flow. Second operand 4 states and 201 transitions. [2024-11-12 20:45:40,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 249 transitions, 2506 flow [2024-11-12 20:45:40,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 249 transitions, 2491 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:45:40,435 INFO L231 Difference]: Finished difference. Result has 172 places, 169 transitions, 1416 flow [2024-11-12 20:45:40,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1416, PETRI_PLACES=172, PETRI_TRANSITIONS=169} [2024-11-12 20:45:40,436 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 106 predicate places. [2024-11-12 20:45:40,436 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 169 transitions, 1416 flow [2024-11-12 20:45:40,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:40,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:40,436 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:40,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 20:45:40,436 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:40,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:40,437 INFO L85 PathProgramCache]: Analyzing trace with hash 798705687, now seen corresponding path program 1 times [2024-11-12 20:45:40,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:40,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445292841] [2024-11-12 20:45:40,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:40,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:40,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:40,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445292841] [2024-11-12 20:45:40,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445292841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:40,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:40,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:40,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685809009] [2024-11-12 20:45:40,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:40,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:40,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:40,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:40,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:40,490 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-12 20:45:40,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 169 transitions, 1416 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:40,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:40,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-12 20:45:40,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:41,568 INFO L124 PetriNetUnfolderBase]: 3676/8620 cut-off events. [2024-11-12 20:45:41,568 INFO L125 PetriNetUnfolderBase]: For 43890/44390 co-relation queries the response was YES. [2024-11-12 20:45:41,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34079 conditions, 8620 events. 3676/8620 cut-off events. For 43890/44390 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 76182 event pairs, 1285 based on Foata normal form. 401/8956 useless extension candidates. Maximal degree in co-relation 32454. Up to 3170 conditions per place. [2024-11-12 20:45:41,633 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 174 selfloop transitions, 4 changer transitions 0/247 dead transitions. [2024-11-12 20:45:41,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 247 transitions, 2452 flow [2024-11-12 20:45:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-12 20:45:41,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2024-11-12 20:45:41,634 INFO L175 Difference]: Start difference. First operand has 172 places, 169 transitions, 1416 flow. Second operand 4 states and 214 transitions. [2024-11-12 20:45:41,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 247 transitions, 2452 flow [2024-11-12 20:45:41,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 247 transitions, 2448 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-12 20:45:41,741 INFO L231 Difference]: Finished difference. Result has 177 places, 170 transitions, 1435 flow [2024-11-12 20:45:41,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1435, PETRI_PLACES=177, PETRI_TRANSITIONS=170} [2024-11-12 20:45:41,742 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 111 predicate places. [2024-11-12 20:45:41,742 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 170 transitions, 1435 flow [2024-11-12 20:45:41,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:41,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:41,742 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:41,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-12 20:45:41,742 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:41,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:41,743 INFO L85 PathProgramCache]: Analyzing trace with hash -458806887, now seen corresponding path program 1 times [2024-11-12 20:45:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:41,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446981724] [2024-11-12 20:45:41,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:41,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:41,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:41,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446981724] [2024-11-12 20:45:41,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446981724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:41,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532157129] [2024-11-12 20:45:41,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:41,876 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) [2024-11-12 20:45:41,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 20:45:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:41,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:45:41,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:42,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:42,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532157129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:42,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:42,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-12 20:45:42,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143689779] [2024-11-12 20:45:42,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:42,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 20:45:42,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:42,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 20:45:42,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-12 20:45:42,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-12 20:45:42,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 170 transitions, 1435 flow. Second operand has 20 states, 20 states have (on average 36.8) internal successors, (736), 20 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:42,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:42,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-12 20:45:42,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:43,707 INFO L124 PetriNetUnfolderBase]: 5768/13662 cut-off events. [2024-11-12 20:45:43,707 INFO L125 PetriNetUnfolderBase]: For 72688/73411 co-relation queries the response was YES. [2024-11-12 20:45:43,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54870 conditions, 13662 events. 5768/13662 cut-off events. For 72688/73411 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 130685 event pairs, 2713 based on Foata normal form. 475/14001 useless extension candidates. Maximal degree in co-relation 51096. Up to 5809 conditions per place. [2024-11-12 20:45:43,861 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 257 selfloop transitions, 18 changer transitions 6/350 dead transitions. [2024-11-12 20:45:43,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 350 transitions, 3604 flow [2024-11-12 20:45:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:43,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 452 transitions. [2024-11-12 20:45:43,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-11-12 20:45:43,863 INFO L175 Difference]: Start difference. First operand has 177 places, 170 transitions, 1435 flow. Second operand 10 states and 452 transitions. [2024-11-12 20:45:43,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 350 transitions, 3604 flow [2024-11-12 20:45:44,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 350 transitions, 3589 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:45:44,122 INFO L231 Difference]: Finished difference. Result has 189 places, 175 transitions, 1531 flow [2024-11-12 20:45:44,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1531, PETRI_PLACES=189, PETRI_TRANSITIONS=175} [2024-11-12 20:45:44,123 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 123 predicate places. [2024-11-12 20:45:44,123 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 175 transitions, 1531 flow [2024-11-12 20:45:44,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 36.8) internal successors, (736), 20 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:44,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:44,124 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:44,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:44,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-12 20:45:44,325 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:44,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1269838111, now seen corresponding path program 1 times [2024-11-12 20:45:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396582498] [2024-11-12 20:45:44,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:45:44,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396582498] [2024-11-12 20:45:44,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396582498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:44,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:44,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:45:44,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533913323] [2024-11-12 20:45:44,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:44,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 20:45:44,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:45:44,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:45:44,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-12 20:45:44,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 175 transitions, 1531 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:44,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:44,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-12 20:45:44,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:48,037 INFO L124 PetriNetUnfolderBase]: 16433/32476 cut-off events. [2024-11-12 20:45:48,037 INFO L125 PetriNetUnfolderBase]: For 182934/183976 co-relation queries the response was YES. [2024-11-12 20:45:48,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135350 conditions, 32476 events. 16433/32476 cut-off events. For 182934/183976 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 298431 event pairs, 2452 based on Foata normal form. 1200/33594 useless extension candidates. Maximal degree in co-relation 121861. Up to 8419 conditions per place. [2024-11-12 20:45:48,512 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 545 selfloop transitions, 224 changer transitions 0/806 dead transitions. [2024-11-12 20:45:48,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 806 transitions, 8544 flow [2024-11-12 20:45:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 20:45:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 20:45:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1084 transitions. [2024-11-12 20:45:48,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6194285714285714 [2024-11-12 20:45:48,515 INFO L175 Difference]: Start difference. First operand has 189 places, 175 transitions, 1531 flow. Second operand 25 states and 1084 transitions. [2024-11-12 20:45:48,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 806 transitions, 8544 flow [2024-11-12 20:45:49,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 806 transitions, 8507 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-12 20:45:49,812 INFO L231 Difference]: Finished difference. Result has 231 places, 400 transitions, 4948 flow [2024-11-12 20:45:49,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4948, PETRI_PLACES=231, PETRI_TRANSITIONS=400} [2024-11-12 20:45:49,813 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 165 predicate places. [2024-11-12 20:45:49,813 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 400 transitions, 4948 flow [2024-11-12 20:45:49,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:49,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:49,814 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:49,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-12 20:45:49,814 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:49,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:49,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2106446659, now seen corresponding path program 1 times [2024-11-12 20:45:49,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:49,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145282248] [2024-11-12 20:45:49,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:49,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:45:49,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:49,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145282248] [2024-11-12 20:45:49,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145282248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:49,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:49,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:45:49,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525626313] [2024-11-12 20:45:49,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:49,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 20:45:49,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:49,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:45:49,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:45:50,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-12 20:45:50,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 400 transitions, 4948 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:50,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:50,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-12 20:45:50,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:59,953 INFO L124 PetriNetUnfolderBase]: 26615/52291 cut-off events. [2024-11-12 20:45:59,954 INFO L125 PetriNetUnfolderBase]: For 617679/619606 co-relation queries the response was YES. [2024-11-12 20:46:00,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264651 conditions, 52291 events. 26615/52291 cut-off events. For 617679/619606 co-relation queries the response was YES. Maximal size of possible extension queue 1593. Compared 515434 event pairs, 3922 based on Foata normal form. 2241/54428 useless extension candidates. Maximal degree in co-relation 240810. Up to 15795 conditions per place. [2024-11-12 20:46:00,917 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 799 selfloop transitions, 394 changer transitions 0/1230 dead transitions. [2024-11-12 20:46:00,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1230 transitions, 16773 flow [2024-11-12 20:46:00,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 20:46:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 20:46:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1084 transitions. [2024-11-12 20:46:00,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6194285714285714 [2024-11-12 20:46:00,920 INFO L175 Difference]: Start difference. First operand has 231 places, 400 transitions, 4948 flow. Second operand 25 states and 1084 transitions. [2024-11-12 20:46:00,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1230 transitions, 16773 flow [2024-11-12 20:46:06,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1230 transitions, 16673 flow, removed 50 selfloop flow, removed 0 redundant places. [2024-11-12 20:46:06,338 INFO L231 Difference]: Finished difference. Result has 278 places, 704 transitions, 11044 flow [2024-11-12 20:46:06,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4908, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11044, PETRI_PLACES=278, PETRI_TRANSITIONS=704} [2024-11-12 20:46:06,339 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 212 predicate places. [2024-11-12 20:46:06,340 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 704 transitions, 11044 flow [2024-11-12 20:46:06,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:46:06,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:06,340 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:06,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-12 20:46:06,341 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:46:06,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:06,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2136366212, now seen corresponding path program 1 times [2024-11-12 20:46:06,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:06,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159779361] [2024-11-12 20:46:06,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:06,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:06,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:06,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159779361] [2024-11-12 20:46:06,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159779361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:06,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115805794] [2024-11-12 20:46:06,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:06,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:06,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:06,478 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) [2024-11-12 20:46:06,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 20:46:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:06,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:46:06,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:06,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:06,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115805794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:06,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:06,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-12 20:46:06,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187028092] [2024-11-12 20:46:06,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:06,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 20:46:06,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:06,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 20:46:06,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-12 20:46:06,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-12 20:46:06,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 704 transitions, 11044 flow. Second operand has 20 states, 20 states have (on average 36.9) internal successors, (738), 20 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:46:06,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:06,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-12 20:46:06,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand