./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.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-more-queue-add-3-nl.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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:47:24,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:47:24,180 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:47:24,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:47:24,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:47:24,217 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:47:24,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:47:24,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:47:24,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:47:24,221 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:47:24,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:47:24,222 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:47:24,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:47:24,225 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:47:24,225 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:47:24,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:47:24,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:47:24,226 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:47:24,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:47:24,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:47:24,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:47:24,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:47:24,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:47:24,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:47:24,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:47:24,231 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:47:24,231 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:47:24,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:47:24,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:47:24,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:47:24,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:47:24,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:47:24,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:47:24,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:47:24,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:47:24,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:47:24,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:47:24,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:47:24,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:47:24,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:47:24,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:47:24,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:47:24,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:47:24,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:47:24,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-12 20:47:24,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:47:24,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:47:24,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:47:24,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:47:24,540 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:47:24,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-12 20:47:25,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:47:26,160 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:47:26,161 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-12 20:47:26,169 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2498cc376/b2c6e61aaefe4ab6928f2e09618915c1/FLAG5ea287971 [2024-11-12 20:47:26,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2498cc376/b2c6e61aaefe4ab6928f2e09618915c1 [2024-11-12 20:47:26,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:47:26,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:47:26,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:47:26,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:47:26,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:47:26,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1784ec14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26, skipping insertion in model container [2024-11-12 20:47:26,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:47:26,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:47:26,478 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:47:26,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:47:26,535 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:47:26,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26 WrapperNode [2024-11-12 20:47:26,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:47:26,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:47:26,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:47:26,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:47:26,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,597 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 274 [2024-11-12 20:47:26,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:47:26,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:47:26,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:47:26,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:47:26,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,614 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,634 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-12 20:47:26,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,635 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,655 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:47:26,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:47:26,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:47:26,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:47:26,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (1/1) ... [2024-11-12 20:47:26,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:47:26,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:26,693 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 20:47:26,696 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 20:47:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:47:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:47:26,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:47:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:47:26,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:47:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:47:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:47:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:47:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:47:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:47:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:47:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 20:47:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 20:47:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:47:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:47:26,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:47:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:47:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:47:26,752 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 20:47:26,895 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:47:26,897 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:47:27,359 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:47:27,360 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:47:27,755 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:47:27,755 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-12 20:47:27,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:47:27 BoogieIcfgContainer [2024-11-12 20:47:27,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:47:27,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:47:27,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:47:27,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:47:27,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:47:26" (1/3) ... [2024-11-12 20:47:27,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baeea66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:47:27, skipping insertion in model container [2024-11-12 20:47:27,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:26" (2/3) ... [2024-11-12 20:47:27,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baeea66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:47:27, skipping insertion in model container [2024-11-12 20:47:27,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:47:27" (3/3) ... [2024-11-12 20:47:27,767 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-12 20:47:27,786 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:47:27,787 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-12 20:47:27,787 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:47:27,882 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 20:47:27,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 70 transitions, 161 flow [2024-11-12 20:47:27,970 INFO L124 PetriNetUnfolderBase]: 7/67 cut-off events. [2024-11-12 20:47:27,971 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:47:27,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 7/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 209 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-11-12 20:47:27,977 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 70 transitions, 161 flow [2024-11-12 20:47:27,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 65 transitions, 145 flow [2024-11-12 20:47:27,990 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:47:27,998 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;@d5c107, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:47:27,998 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-12 20:47:28,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:47:28,004 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:47:28,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:47:28,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:28,005 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:47:28,006 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:28,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:28,012 INFO L85 PathProgramCache]: Analyzing trace with hash 807773, now seen corresponding path program 1 times [2024-11-12 20:47:28,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:28,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109721699] [2024-11-12 20:47:28,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:28,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:28,360 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 20:47:28,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:28,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109721699] [2024-11-12 20:47:28,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109721699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:28,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:28,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:28,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566530145] [2024-11-12 20:47:28,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:28,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:28,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:28,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:28,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-12 20:47:28,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 20:47:28,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:28,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-12 20:47:28,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:29,043 INFO L124 PetriNetUnfolderBase]: 2450/4269 cut-off events. [2024-11-12 20:47:29,044 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-11-12 20:47:29,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7873 conditions, 4269 events. 2450/4269 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28756 event pairs, 2170 based on Foata normal form. 287/3395 useless extension candidates. Maximal degree in co-relation 7490. Up to 3377 conditions per place. [2024-11-12 20:47:29,090 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 39 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-11-12 20:47:29,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 235 flow [2024-11-12 20:47:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:29,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-11-12 20:47:29,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-11-12 20:47:29,106 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 145 flow. Second operand 4 states and 141 transitions. [2024-11-12 20:47:29,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 235 flow [2024-11-12 20:47:29,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 226 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:47:29,125 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 182 flow [2024-11-12 20:47:29,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-11-12 20:47:29,135 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-11-12 20:47:29,136 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 182 flow [2024-11-12 20:47:29,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 20:47:29,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:29,136 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:47:29,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:47:29,137 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:29,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:29,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1704600769, now seen corresponding path program 1 times [2024-11-12 20:47:29,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:29,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074452117] [2024-11-12 20:47:29,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:29,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:29,351 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 20:47:29,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:29,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074452117] [2024-11-12 20:47:29,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074452117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:29,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045244341] [2024-11-12 20:47:29,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:29,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:29,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:29,355 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 20:47:29,357 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 20:47:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:29,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:47:29,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:29,501 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 20:47:29,503 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:47:29,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045244341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:29,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:47:29,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:47:29,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349420518] [2024-11-12 20:47:29,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:29,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:47:29,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:47:29,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:47:29,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-12 20:47:29,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:29,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:29,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-12 20:47:29,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:30,017 INFO L124 PetriNetUnfolderBase]: 2450/4267 cut-off events. [2024-11-12 20:47:30,018 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-12 20:47:30,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7827 conditions, 4267 events. 2450/4267 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28746 event pairs, 2170 based on Foata normal form. 2/3111 useless extension candidates. Maximal degree in co-relation 7777. Up to 3367 conditions per place. [2024-11-12 20:47:30,052 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 32 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-11-12 20:47:30,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 262 flow [2024-11-12 20:47:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:47:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:47:30,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-11-12 20:47:30,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-11-12 20:47:30,058 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 182 flow. Second operand 6 states and 172 transitions. [2024-11-12 20:47:30,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 262 flow [2024-11-12 20:47:30,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:47:30,062 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 198 flow [2024-11-12 20:47:30,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-11-12 20:47:30,063 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-11-12 20:47:30,064 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 198 flow [2024-11-12 20:47:30,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:30,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:30,065 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:47:30,085 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 20:47:30,269 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 20:47:30,271 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:30,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1303015442, now seen corresponding path program 1 times [2024-11-12 20:47:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741302520] [2024-11-12 20:47:30,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:30,389 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 20:47:30,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:30,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741302520] [2024-11-12 20:47:30,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741302520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:30,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040000469] [2024-11-12 20:47:30,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:30,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:30,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:30,393 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 20:47:30,394 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 20:47:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:30,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:47:30,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:30,509 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 20:47:30,509 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:30,553 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 20:47:30,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040000469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:30,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:30,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:47:30,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693370749] [2024-11-12 20:47:30,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:30,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:47:30,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:30,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:47:30,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:47:30,577 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-12 20:47:30,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 198 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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 20:47:30,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:30,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-12 20:47:30,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:31,133 INFO L124 PetriNetUnfolderBase]: 2456/4291 cut-off events. [2024-11-12 20:47:31,133 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-12 20:47:31,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7921 conditions, 4291 events. 2456/4291 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28994 event pairs, 2170 based on Foata normal form. 6/3138 useless extension candidates. Maximal degree in co-relation 7779. Up to 3378 conditions per place. [2024-11-12 20:47:31,172 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 37 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-11-12 20:47:31,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 436 flow [2024-11-12 20:47:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:47:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:47:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-11-12 20:47:31,175 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39714285714285713 [2024-11-12 20:47:31,176 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 198 flow. Second operand 10 states and 278 transitions. [2024-11-12 20:47:31,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 436 flow [2024-11-12 20:47:31,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 378 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-12 20:47:31,179 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 338 flow [2024-11-12 20:47:31,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-11-12 20:47:31,182 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-11-12 20:47:31,183 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 338 flow [2024-11-12 20:47:31,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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 20:47:31,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:31,184 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:31,202 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 20:47:31,384 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 20:47:31,385 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:31,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:31,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1274722415, now seen corresponding path program 1 times [2024-11-12 20:47:31,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:31,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271090643] [2024-11-12 20:47:31,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:31,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:31,517 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 20:47:31,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:31,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271090643] [2024-11-12 20:47:31,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271090643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:31,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:31,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:31,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084467254] [2024-11-12 20:47:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:31,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:31,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:31,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-12 20:47:31,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 20:47:31,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:31,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-12 20:47:31,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:31,989 INFO L124 PetriNetUnfolderBase]: 2593/4569 cut-off events. [2024-11-12 20:47:31,989 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-12 20:47:31,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8495 conditions, 4569 events. 2593/4569 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30790 event pairs, 2297 based on Foata normal form. 98/3549 useless extension candidates. Maximal degree in co-relation 8399. Up to 3393 conditions per place. [2024-11-12 20:47:32,029 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 85 selfloop transitions, 3 changer transitions 1/109 dead transitions. [2024-11-12 20:47:32,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 109 transitions, 651 flow [2024-11-12 20:47:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:32,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-12 20:47:32,031 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-11-12 20:47:32,031 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 338 flow. Second operand 4 states and 162 transitions. [2024-11-12 20:47:32,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 109 transitions, 651 flow [2024-11-12 20:47:32,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 109 transitions, 617 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-12 20:47:32,036 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 333 flow [2024-11-12 20:47:32,036 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=333, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-11-12 20:47:32,037 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2024-11-12 20:47:32,037 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 333 flow [2024-11-12 20:47:32,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 20:47:32,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:32,038 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:32,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:47:32,038 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:32,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash -189526413, now seen corresponding path program 1 times [2024-11-12 20:47:32,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:32,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576147151] [2024-11-12 20:47:32,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:32,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:32,175 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 20:47:32,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:32,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576147151] [2024-11-12 20:47:32,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576147151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:32,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553480791] [2024-11-12 20:47:32,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:32,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:32,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:32,179 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 20:47:32,180 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 20:47:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:32,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:47:32,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:32,283 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:47:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553480791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:32,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:47:32,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-12 20:47:32,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442250724] [2024-11-12 20:47:32,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:32,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:32,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:32,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:47:32,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-12 20:47:32,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 20:47:32,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:32,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-12 20:47:32,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:32,596 INFO L124 PetriNetUnfolderBase]: 1818/3329 cut-off events. [2024-11-12 20:47:32,597 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-12 20:47:32,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 3329 events. 1818/3329 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21655 event pairs, 1588 based on Foata normal form. 0/2749 useless extension candidates. Maximal degree in co-relation 6350. Up to 2572 conditions per place. [2024-11-12 20:47:32,616 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 56 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2024-11-12 20:47:32,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 435 flow [2024-11-12 20:47:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-12 20:47:32,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-12 20:47:32,619 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 333 flow. Second operand 3 states and 111 transitions. [2024-11-12 20:47:32,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 435 flow [2024-11-12 20:47:32,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 431 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:32,622 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 319 flow [2024-11-12 20:47:32,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2024-11-12 20:47:32,623 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-11-12 20:47:32,623 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 319 flow [2024-11-12 20:47:32,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 20:47:32,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:32,624 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:32,642 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 20:47:32,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:32,826 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:32,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:32,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2068854914, now seen corresponding path program 1 times [2024-11-12 20:47:32,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:32,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857730547] [2024-11-12 20:47:32,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:32,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:32,876 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 20:47:32,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:32,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857730547] [2024-11-12 20:47:32,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857730547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:32,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:32,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:47:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472089287] [2024-11-12 20:47:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:32,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:32,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:32,881 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-12 20:47:32,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 20:47:32,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:32,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-12 20:47:32,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:33,187 INFO L124 PetriNetUnfolderBase]: 1664/3063 cut-off events. [2024-11-12 20:47:33,187 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-11-12 20:47:33,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 3063 events. 1664/3063 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18782 event pairs, 584 based on Foata normal form. 54/2642 useless extension candidates. Maximal degree in co-relation 6048. Up to 1751 conditions per place. [2024-11-12 20:47:33,202 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 70 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-11-12 20:47:33,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 502 flow [2024-11-12 20:47:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-11-12 20:47:33,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-12 20:47:33,203 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 319 flow. Second operand 3 states and 125 transitions. [2024-11-12 20:47:33,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 502 flow [2024-11-12 20:47:33,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:47:33,208 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 324 flow [2024-11-12 20:47:33,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-11-12 20:47:33,209 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2024-11-12 20:47:33,209 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 324 flow [2024-11-12 20:47:33,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 20:47:33,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:33,210 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:33,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:47:33,210 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:33,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:33,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1746229002, now seen corresponding path program 1 times [2024-11-12 20:47:33,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:33,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497298468] [2024-11-12 20:47:33,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:33,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:33,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:33,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497298468] [2024-11-12 20:47:33,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497298468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:33,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:33,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:47:33,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083966359] [2024-11-12 20:47:33,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:33,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:33,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:33,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:33,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:33,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-12 20:47:33,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 20:47:33,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:33,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-12 20:47:33,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:33,860 INFO L124 PetriNetUnfolderBase]: 2845/5014 cut-off events. [2024-11-12 20:47:33,861 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-11-12 20:47:33,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10502 conditions, 5014 events. 2845/5014 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 32143 event pairs, 1762 based on Foata normal form. 96/4604 useless extension candidates. Maximal degree in co-relation 10486. Up to 3069 conditions per place. [2024-11-12 20:47:33,899 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 94 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-11-12 20:47:33,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 626 flow [2024-11-12 20:47:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-11-12 20:47:33,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-11-12 20:47:33,901 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 324 flow. Second operand 4 states and 165 transitions. [2024-11-12 20:47:33,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 626 flow [2024-11-12 20:47:33,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 116 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:33,906 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 351 flow [2024-11-12 20:47:33,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-11-12 20:47:33,908 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-11-12 20:47:33,909 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 351 flow [2024-11-12 20:47:33,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 20:47:33,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:33,910 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:33,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:47:33,911 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:33,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:33,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1200309641, now seen corresponding path program 1 times [2024-11-12 20:47:33,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:33,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468579716] [2024-11-12 20:47:33,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:33,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468579716] [2024-11-12 20:47:33,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468579716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:33,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:33,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219994920] [2024-11-12 20:47:33,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:33,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:33,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:33,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:33,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-12 20:47:33,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 20:47:33,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:33,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-12 20:47:33,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:34,365 INFO L124 PetriNetUnfolderBase]: 1973/3727 cut-off events. [2024-11-12 20:47:34,365 INFO L125 PetriNetUnfolderBase]: For 1305/1365 co-relation queries the response was YES. [2024-11-12 20:47:34,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 3727 events. 1973/3727 cut-off events. For 1305/1365 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 23908 event pairs, 896 based on Foata normal form. 15/3376 useless extension candidates. Maximal degree in co-relation 8420. Up to 2593 conditions per place. [2024-11-12 20:47:34,389 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 67 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-11-12 20:47:34,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 516 flow [2024-11-12 20:47:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-12 20:47:34,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-12 20:47:34,390 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 351 flow. Second operand 3 states and 119 transitions. [2024-11-12 20:47:34,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 516 flow [2024-11-12 20:47:34,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:34,395 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 371 flow [2024-11-12 20:47:34,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-11-12 20:47:34,396 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2024-11-12 20:47:34,396 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 371 flow [2024-11-12 20:47:34,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 20:47:34,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:34,397 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:34,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:47:34,397 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:34,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1714169520, now seen corresponding path program 1 times [2024-11-12 20:47:34,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:34,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352717037] [2024-11-12 20:47:34,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:34,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:34,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352717037] [2024-11-12 20:47:34,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352717037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:34,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:34,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:47:34,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921400303] [2024-11-12 20:47:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:34,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:34,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-12 20:47:34,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 20:47:34,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:34,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-12 20:47:34,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:34,925 INFO L124 PetriNetUnfolderBase]: 2356/4430 cut-off events. [2024-11-12 20:47:34,926 INFO L125 PetriNetUnfolderBase]: For 2443/2583 co-relation queries the response was YES. [2024-11-12 20:47:34,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10566 conditions, 4430 events. 2356/4430 cut-off events. For 2443/2583 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 28146 event pairs, 1909 based on Foata normal form. 100/4169 useless extension candidates. Maximal degree in co-relation 10546. Up to 2808 conditions per place. [2024-11-12 20:47:34,954 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 72 selfloop transitions, 7 changer transitions 6/105 dead transitions. [2024-11-12 20:47:34,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 628 flow [2024-11-12 20:47:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-11-12 20:47:34,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-12 20:47:34,956 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 371 flow. Second operand 4 states and 155 transitions. [2024-11-12 20:47:34,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 628 flow [2024-11-12 20:47:34,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 105 transitions, 611 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:34,961 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 381 flow [2024-11-12 20:47:34,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-11-12 20:47:34,962 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2024-11-12 20:47:34,962 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 381 flow [2024-11-12 20:47:34,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 20:47:34,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:34,964 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-12 20:47:34,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:47:34,964 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:34,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1900093968, now seen corresponding path program 2 times [2024-11-12 20:47:34,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:34,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978792888] [2024-11-12 20:47:34,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:34,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:35,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:35,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978792888] [2024-11-12 20:47:35,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978792888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:35,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151978192] [2024-11-12 20:47:35,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:47:35,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:35,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:35,118 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 20:47:35,119 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 20:47:35,190 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:47:35,190 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:47:35,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:47:35,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:47:35,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:47:35,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151978192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:35,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:35,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-12 20:47:35,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852475654] [2024-11-12 20:47:35,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:35,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:47:35,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:47:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:47:35,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-12 20:47:35,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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 20:47:35,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:35,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-12 20:47:35,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:35,974 INFO L124 PetriNetUnfolderBase]: 2359/4453 cut-off events. [2024-11-12 20:47:35,975 INFO L125 PetriNetUnfolderBase]: For 1873/2013 co-relation queries the response was YES. [2024-11-12 20:47:35,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10337 conditions, 4453 events. 2359/4453 cut-off events. For 1873/2013 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 28520 event pairs, 1909 based on Foata normal form. 4/4093 useless extension candidates. Maximal degree in co-relation 10316. Up to 3426 conditions per place. [2024-11-12 20:47:36,004 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 36 selfloop transitions, 34 changer transitions 0/88 dead transitions. [2024-11-12 20:47:36,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 88 transitions, 551 flow [2024-11-12 20:47:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 20:47:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 20:47:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 571 transitions. [2024-11-12 20:47:36,007 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3398809523809524 [2024-11-12 20:47:36,007 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 381 flow. Second operand 24 states and 571 transitions. [2024-11-12 20:47:36,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 88 transitions, 551 flow [2024-11-12 20:47:36,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 88 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:36,014 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 485 flow [2024-11-12 20:47:36,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=485, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2024-11-12 20:47:36,015 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 39 predicate places. [2024-11-12 20:47:36,016 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 485 flow [2024-11-12 20:47:36,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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 20:47:36,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:36,016 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:36,034 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 20:47:36,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:36,221 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:36,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:36,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1297551664, now seen corresponding path program 1 times [2024-11-12 20:47:36,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:36,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206928572] [2024-11-12 20:47:36,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:36,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:36,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:36,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206928572] [2024-11-12 20:47:36,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206928572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:36,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206635569] [2024-11-12 20:47:36,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:36,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:36,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:36,403 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 20:47:36,405 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 20:47:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:36,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 20:47:36,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:36,605 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 20:47:36,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:36,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206635569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:36,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:36,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-12 20:47:36,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807037933] [2024-11-12 20:47:36,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:36,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 20:47:36,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 20:47:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:47:36,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-12 20:47:36,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 485 flow. Second operand has 15 states, 15 states have (on average 22.866666666666667) internal successors, (343), 15 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:36,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:36,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-12 20:47:36,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:37,792 INFO L124 PetriNetUnfolderBase]: 3877/7370 cut-off events. [2024-11-12 20:47:37,793 INFO L125 PetriNetUnfolderBase]: For 3321/3461 co-relation queries the response was YES. [2024-11-12 20:47:37,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17089 conditions, 7370 events. 3877/7370 cut-off events. For 3321/3461 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 53088 event pairs, 2603 based on Foata normal form. 232/6969 useless extension candidates. Maximal degree in co-relation 17065. Up to 3249 conditions per place. [2024-11-12 20:47:37,847 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 105 selfloop transitions, 31 changer transitions 17/171 dead transitions. [2024-11-12 20:47:37,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 171 transitions, 1266 flow [2024-11-12 20:47:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 20:47:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 20:47:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 352 transitions. [2024-11-12 20:47:37,849 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-11-12 20:47:37,849 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 485 flow. Second operand 12 states and 352 transitions. [2024-11-12 20:47:37,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 171 transitions, 1266 flow [2024-11-12 20:47:37,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 171 transitions, 1096 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-11-12 20:47:37,860 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 651 flow [2024-11-12 20:47:37,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=651, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-11-12 20:47:37,861 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 44 predicate places. [2024-11-12 20:47:37,861 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 651 flow [2024-11-12 20:47:37,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 22.866666666666667) internal successors, (343), 15 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:37,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:37,862 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 20:47:37,880 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 20:47:38,062 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,SelfDestructingSolverStorable10 [2024-11-12 20:47:38,064 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:38,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:38,064 INFO L85 PathProgramCache]: Analyzing trace with hash -932144561, now seen corresponding path program 1 times [2024-11-12 20:47:38,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:38,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232006715] [2024-11-12 20:47:38,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:38,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:38,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232006715] [2024-11-12 20:47:38,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232006715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596382908] [2024-11-12 20:47:38,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:38,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:38,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:38,212 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 20:47:38,214 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 20:47:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:38,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:47:38,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:47:38,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:47:38,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596382908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:38,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:47:38,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-12 20:47:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864770076] [2024-11-12 20:47:38,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:38,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:38,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:38,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:38,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:47:38,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-12 20:47:38,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 651 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 20:47:38,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:38,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-12 20:47:38,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:38,828 INFO L124 PetriNetUnfolderBase]: 2913/5811 cut-off events. [2024-11-12 20:47:38,828 INFO L125 PetriNetUnfolderBase]: For 3634/3718 co-relation queries the response was YES. [2024-11-12 20:47:38,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13497 conditions, 5811 events. 2913/5811 cut-off events. For 3634/3718 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 42516 event pairs, 2421 based on Foata normal form. 266/5633 useless extension candidates. Maximal degree in co-relation 13469. Up to 4362 conditions per place. [2024-11-12 20:47:38,871 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 83 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2024-11-12 20:47:38,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 103 transitions, 811 flow [2024-11-12 20:47:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-12 20:47:38,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-12 20:47:38,873 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 651 flow. Second operand 3 states and 108 transitions. [2024-11-12 20:47:38,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 103 transitions, 811 flow [2024-11-12 20:47:38,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 799 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-12 20:47:38,881 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 633 flow [2024-11-12 20:47:38,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=633, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-11-12 20:47:38,882 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 41 predicate places. [2024-11-12 20:47:38,882 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 633 flow [2024-11-12 20:47:38,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 20:47:38,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:38,882 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:38,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 20:47:39,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:39,083 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:39,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1621894546, now seen corresponding path program 2 times [2024-11-12 20:47:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:39,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069341159] [2024-11-12 20:47:39,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:47:39,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:39,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069341159] [2024-11-12 20:47:39,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069341159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:39,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983980984] [2024-11-12 20:47:39,185 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:47:39,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:39,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:39,187 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 20:47:39,189 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 20:47:39,277 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:47:39,278 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:47:39,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:47:39,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:47:39,322 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:47:39,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983980984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:39,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:47:39,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-12 20:47:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46706530] [2024-11-12 20:47:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:39,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:47:39,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:39,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:47:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:47:39,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-11-12 20:47:39,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 633 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 20:47:39,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:39,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-11-12 20:47:39,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:39,949 INFO L124 PetriNetUnfolderBase]: 3599/6531 cut-off events. [2024-11-12 20:47:39,949 INFO L125 PetriNetUnfolderBase]: For 3050/3050 co-relation queries the response was YES. [2024-11-12 20:47:39,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15544 conditions, 6531 events. 3599/6531 cut-off events. For 3050/3050 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 44691 event pairs, 1251 based on Foata normal form. 88/6177 useless extension candidates. Maximal degree in co-relation 15515. Up to 2097 conditions per place. [2024-11-12 20:47:39,989 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 109 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-11-12 20:47:39,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 132 transitions, 947 flow [2024-11-12 20:47:39,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:39,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-11-12 20:47:39,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-12 20:47:39,991 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 633 flow. Second operand 4 states and 150 transitions. [2024-11-12 20:47:39,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 132 transitions, 947 flow [2024-11-12 20:47:40,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 132 transitions, 946 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:40,004 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 642 flow [2024-11-12 20:47:40,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=642, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-11-12 20:47:40,005 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 42 predicate places. [2024-11-12 20:47:40,006 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 642 flow [2024-11-12 20:47:40,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 20:47:40,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:40,006 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-12 20:47:40,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 20:47:40,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:40,208 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:40,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1255992720, now seen corresponding path program 1 times [2024-11-12 20:47:40,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:40,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191504374] [2024-11-12 20:47:40,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:40,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:40,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:40,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191504374] [2024-11-12 20:47:40,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191504374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:40,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275392296] [2024-11-12 20:47:40,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:40,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:40,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:40,399 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 20:47:40,400 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 20:47:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:40,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 20:47:40,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:40,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:40,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275392296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:40,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:40,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-12 20:47:40,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435561933] [2024-11-12 20:47:40,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:40,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 20:47:40,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:40,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 20:47:40,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-12 20:47:40,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-12 20:47:40,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 642 flow. Second operand has 28 states, 28 states have (on average 22.071428571428573) internal successors, (618), 28 states have internal predecessors, (618), 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 20:47:40,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:40,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-12 20:47:40,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:41,583 INFO L124 PetriNetUnfolderBase]: 2941/5883 cut-off events. [2024-11-12 20:47:41,583 INFO L125 PetriNetUnfolderBase]: For 5823/5865 co-relation queries the response was YES. [2024-11-12 20:47:41,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14704 conditions, 5883 events. 2941/5883 cut-off events. For 5823/5865 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 43024 event pairs, 2421 based on Foata normal form. 21/5460 useless extension candidates. Maximal degree in co-relation 14675. Up to 4344 conditions per place. [2024-11-12 20:47:41,609 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 41 selfloop transitions, 100 changer transitions 0/158 dead transitions. [2024-11-12 20:47:41,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 158 transitions, 1470 flow [2024-11-12 20:47:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 20:47:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 20:47:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 657 transitions. [2024-11-12 20:47:41,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.360989010989011 [2024-11-12 20:47:41,612 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 642 flow. Second operand 26 states and 657 transitions. [2024-11-12 20:47:41,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 158 transitions, 1470 flow [2024-11-12 20:47:41,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 158 transitions, 1456 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:47:41,621 INFO L231 Difference]: Finished difference. Result has 139 places, 158 transitions, 1444 flow [2024-11-12 20:47:41,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1444, PETRI_PLACES=139, PETRI_TRANSITIONS=158} [2024-11-12 20:47:41,622 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 71 predicate places. [2024-11-12 20:47:41,622 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 158 transitions, 1444 flow [2024-11-12 20:47:41,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 22.071428571428573) internal successors, (618), 28 states have internal predecessors, (618), 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 20:47:41,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:41,623 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] [2024-11-12 20:47:41,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 20:47:41,827 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,SelfDestructingSolverStorable13 [2024-11-12 20:47:41,828 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:41,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:41,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1829192684, now seen corresponding path program 1 times [2024-11-12 20:47:41,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:41,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532018271] [2024-11-12 20:47:41,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:41,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:42,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:47:42,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:42,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532018271] [2024-11-12 20:47:42,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532018271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:42,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699714520] [2024-11-12 20:47:42,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:42,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:42,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:42,293 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 20:47:42,294 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 20:47:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:42,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 20:47:42,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:42,450 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 23 treesize of output 1 [2024-11-12 20:47:42,753 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-12 20:47:42,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-12 20:47:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:47:42,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:43,064 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 20 treesize of output 18 [2024-11-12 20:47:43,069 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 26 treesize of output 20 [2024-11-12 20:47:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:47:43,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699714520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:43,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:43,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-12 20:47:43,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196678697] [2024-11-12 20:47:43,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:43,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 20:47:43,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:43,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 20:47:43,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-12 20:47:43,392 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-11-12 20:47:43,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 158 transitions, 1444 flow. Second operand has 21 states, 21 states have (on average 19.142857142857142) internal successors, (402), 21 states have internal predecessors, (402), 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 20:47:43,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:43,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-11-12 20:47:43,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:46,764 INFO L124 PetriNetUnfolderBase]: 15047/25831 cut-off events. [2024-11-12 20:47:46,764 INFO L125 PetriNetUnfolderBase]: For 13564/13828 co-relation queries the response was YES. [2024-11-12 20:47:46,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60885 conditions, 25831 events. 15047/25831 cut-off events. For 13564/13828 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 209027 event pairs, 6374 based on Foata normal form. 0/23385 useless extension candidates. Maximal degree in co-relation 60848. Up to 4521 conditions per place. [2024-11-12 20:47:46,975 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 270 selfloop transitions, 110 changer transitions 8/401 dead transitions. [2024-11-12 20:47:46,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 401 transitions, 3150 flow [2024-11-12 20:47:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 20:47:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 20:47:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 548 transitions. [2024-11-12 20:47:46,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43492063492063493 [2024-11-12 20:47:46,977 INFO L175 Difference]: Start difference. First operand has 139 places, 158 transitions, 1444 flow. Second operand 18 states and 548 transitions. [2024-11-12 20:47:46,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 401 transitions, 3150 flow [2024-11-12 20:47:46,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 401 transitions, 2859 flow, removed 92 selfloop flow, removed 12 redundant places. [2024-11-12 20:47:47,004 INFO L231 Difference]: Finished difference. Result has 149 places, 173 transitions, 1457 flow [2024-11-12 20:47:47,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1457, PETRI_PLACES=149, PETRI_TRANSITIONS=173} [2024-11-12 20:47:47,005 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 81 predicate places. [2024-11-12 20:47:47,005 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 1457 flow [2024-11-12 20:47:47,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.142857142857142) internal successors, (402), 21 states have internal predecessors, (402), 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 20:47:47,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:47,006 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:47,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 20:47:47,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-12 20:47:47,211 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:47,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1260875763, now seen corresponding path program 1 times [2024-11-12 20:47:47,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:47,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420605044] [2024-11-12 20:47:47,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:47:47,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:47,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420605044] [2024-11-12 20:47:47,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420605044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:47,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173974858] [2024-11-12 20:47:47,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:47,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:47,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:47,335 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:47,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 20:47:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:47,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:47:47,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:47:47,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:47:47,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173974858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:47,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:47,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:47:47,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944417132] [2024-11-12 20:47:47,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:47,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:47:47,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:47,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:47:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:47:47,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-12 20:47:47,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 1457 flow. Second operand has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 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 20:47:47,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:47,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-12 20:47:47,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:50,901 INFO L124 PetriNetUnfolderBase]: 15319/28757 cut-off events. [2024-11-12 20:47:50,901 INFO L125 PetriNetUnfolderBase]: For 27940/28384 co-relation queries the response was YES. [2024-11-12 20:47:51,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74756 conditions, 28757 events. 15319/28757 cut-off events. For 27940/28384 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 248194 event pairs, 4660 based on Foata normal form. 0/27473 useless extension candidates. Maximal degree in co-relation 74716. Up to 10594 conditions per place. [2024-11-12 20:47:51,155 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 359 selfloop transitions, 13 changer transitions 0/393 dead transitions. [2024-11-12 20:47:51,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 393 transitions, 3303 flow [2024-11-12 20:47:51,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:47:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:47:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 393 transitions. [2024-11-12 20:47:51,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5614285714285714 [2024-11-12 20:47:51,157 INFO L175 Difference]: Start difference. First operand has 149 places, 173 transitions, 1457 flow. Second operand 10 states and 393 transitions. [2024-11-12 20:47:51,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 393 transitions, 3303 flow [2024-11-12 20:47:51,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 393 transitions, 3214 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-11-12 20:47:51,299 INFO L231 Difference]: Finished difference. Result has 156 places, 182 transitions, 1496 flow [2024-11-12 20:47:51,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1496, PETRI_PLACES=156, PETRI_TRANSITIONS=182} [2024-11-12 20:47:51,299 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 88 predicate places. [2024-11-12 20:47:51,299 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 182 transitions, 1496 flow [2024-11-12 20:47:51,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 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 20:47:51,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:51,300 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] [2024-11-12 20:47:51,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 20:47:51,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 20:47:51,501 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:51,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1400375729, now seen corresponding path program 1 times [2024-11-12 20:47:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:51,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926592976] [2024-11-12 20:47:51,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:47:52,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:52,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926592976] [2024-11-12 20:47:52,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926592976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:52,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975982582] [2024-11-12 20:47:52,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:52,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:52,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:52,057 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:52,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 20:47:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:52,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 20:47:52,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:52,190 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 23 treesize of output 1 [2024-11-12 20:47:52,389 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-12 20:47:52,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-12 20:47:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:47:52,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:52,770 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 18 treesize of output 16 [2024-11-12 20:47:52,773 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 16 [2024-11-12 20:47:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:47:52,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975982582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:52,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:52,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-12 20:47:52,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710642164] [2024-11-12 20:47:52,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:52,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 20:47:52,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:52,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 20:47:52,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-12 20:47:53,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 70 [2024-11-12 20:47:53,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 182 transitions, 1496 flow. Second operand has 21 states, 21 states have (on average 20.142857142857142) internal successors, (423), 21 states have internal predecessors, (423), 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 20:47:53,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:53,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 70 [2024-11-12 20:47:53,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:57,937 INFO L124 PetriNetUnfolderBase]: 20962/36567 cut-off events. [2024-11-12 20:47:57,937 INFO L125 PetriNetUnfolderBase]: For 47721/48095 co-relation queries the response was YES. [2024-11-12 20:47:58,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105013 conditions, 36567 events. 20962/36567 cut-off events. For 47721/48095 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 302685 event pairs, 10028 based on Foata normal form. 572/36096 useless extension candidates. Maximal degree in co-relation 104970. Up to 7425 conditions per place. [2024-11-12 20:47:58,583 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 370 selfloop transitions, 108 changer transitions 11/507 dead transitions. [2024-11-12 20:47:58,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 507 transitions, 4176 flow [2024-11-12 20:47:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 20:47:58,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 20:47:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 559 transitions. [2024-11-12 20:47:58,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44365079365079363 [2024-11-12 20:47:58,585 INFO L175 Difference]: Start difference. First operand has 156 places, 182 transitions, 1496 flow. Second operand 18 states and 559 transitions. [2024-11-12 20:47:58,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 507 transitions, 4176 flow [2024-11-12 20:47:58,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 507 transitions, 3840 flow, removed 132 selfloop flow, removed 3 redundant places. [2024-11-12 20:47:58,810 INFO L231 Difference]: Finished difference. Result has 172 places, 184 transitions, 1703 flow [2024-11-12 20:47:58,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1703, PETRI_PLACES=172, PETRI_TRANSITIONS=184} [2024-11-12 20:47:58,811 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 104 predicate places. [2024-11-12 20:47:58,811 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 184 transitions, 1703 flow [2024-11-12 20:47:58,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 20.142857142857142) internal successors, (423), 21 states have internal predecessors, (423), 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 20:47:58,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:58,811 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, 1] [2024-11-12 20:47:58,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 20:47:59,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 20:47:59,012 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:47:59,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1403960753, now seen corresponding path program 1 times [2024-11-12 20:47:59,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:59,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373400763] [2024-11-12 20:47:59,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:59,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373400763] [2024-11-12 20:47:59,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373400763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629756231] [2024-11-12 20:47:59,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:59,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:59,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:59,440 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:59,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 20:47:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:59,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-12 20:47:59,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:59,573 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 23 treesize of output 1 [2024-11-12 20:47:59,886 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 20:47:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:59,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:00,382 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 20 treesize of output 18 [2024-11-12 20:48:00,390 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 26 treesize of output 20 [2024-11-12 20:48:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:48:00,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629756231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:00,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:00,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-12 20:48:00,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425853816] [2024-11-12 20:48:00,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:00,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-12 20:48:00,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:00,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-12 20:48:00,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-12 20:48:00,591 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-11-12 20:48:00,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 184 transitions, 1703 flow. Second operand has 24 states, 24 states have (on average 19.375) internal successors, (465), 24 states have internal predecessors, (465), 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 20:48:00,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:00,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-11-12 20:48:00,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:10,036 INFO L124 PetriNetUnfolderBase]: 37724/64828 cut-off events. [2024-11-12 20:48:10,037 INFO L125 PetriNetUnfolderBase]: For 94482/96248 co-relation queries the response was YES. [2024-11-12 20:48:10,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185791 conditions, 64828 events. 37724/64828 cut-off events. For 94482/96248 co-relation queries the response was YES. Maximal size of possible extension queue 1701. Compared 567504 event pairs, 6528 based on Foata normal form. 96/60806 useless extension candidates. Maximal degree in co-relation 185746. Up to 11397 conditions per place. [2024-11-12 20:48:10,914 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 563 selfloop transitions, 135 changer transitions 22/739 dead transitions. [2024-11-12 20:48:10,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 739 transitions, 5763 flow [2024-11-12 20:48:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 20:48:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 20:48:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 807 transitions. [2024-11-12 20:48:10,917 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42698412698412697 [2024-11-12 20:48:10,917 INFO L175 Difference]: Start difference. First operand has 172 places, 184 transitions, 1703 flow. Second operand 27 states and 807 transitions. [2024-11-12 20:48:10,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 739 transitions, 5763 flow [2024-11-12 20:48:11,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 739 transitions, 5551 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-12 20:48:11,447 INFO L231 Difference]: Finished difference. Result has 195 places, 223 transitions, 2232 flow [2024-11-12 20:48:11,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2232, PETRI_PLACES=195, PETRI_TRANSITIONS=223} [2024-11-12 20:48:11,448 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 127 predicate places. [2024-11-12 20:48:11,448 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 223 transitions, 2232 flow [2024-11-12 20:48:11,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.375) internal successors, (465), 24 states have internal predecessors, (465), 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 20:48:11,449 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:11,449 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:11,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:11,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 20:48:11,650 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:48:11,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2111293468, now seen corresponding path program 1 times [2024-11-12 20:48:11,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:11,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76306980] [2024-11-12 20:48:11,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:11,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:48:12,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76306980] [2024-11-12 20:48:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76306980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814193080] [2024-11-12 20:48:12,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:12,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:12,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:12,513 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:12,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 20:48:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:12,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 20:48:12,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:12,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-12 20:48:12,644 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 23 treesize of output 1 [2024-11-12 20:48:12,701 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:48:12,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-12 20:48:12,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-12 20:48:12,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-12 20:48:12,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-12 20:48:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:48:12,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:13,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:13,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-11-12 20:48:13,506 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-12 20:48:13,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2024-11-12 20:48:13,517 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-12 20:48:13,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2024-11-12 20:48:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:48:13,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814193080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:13,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:13,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-12 20:48:13,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221375749] [2024-11-12 20:48:13,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:13,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 20:48:13,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:13,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 20:48:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=552, Unknown=1, NotChecked=0, Total=650 [2024-11-12 20:48:13,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 70 [2024-11-12 20:48:13,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 223 transitions, 2232 flow. Second operand has 26 states, 26 states have (on average 16.423076923076923) internal successors, (427), 26 states have internal predecessors, (427), 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 20:48:13,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:13,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 70 [2024-11-12 20:48:13,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:25,375 INFO L124 PetriNetUnfolderBase]: 49298/81605 cut-off events. [2024-11-12 20:48:25,375 INFO L125 PetriNetUnfolderBase]: For 144679/145656 co-relation queries the response was YES. [2024-11-12 20:48:26,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255446 conditions, 81605 events. 49298/81605 cut-off events. For 144679/145656 co-relation queries the response was YES. Maximal size of possible extension queue 2033. Compared 691828 event pairs, 21754 based on Foata normal form. 418/78916 useless extension candidates. Maximal degree in co-relation 255392. Up to 38403 conditions per place. [2024-11-12 20:48:26,748 INFO L140 encePairwiseOnDemand]: 54/70 looper letters, 488 selfloop transitions, 118 changer transitions 35/654 dead transitions. [2024-11-12 20:48:26,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 654 transitions, 6223 flow [2024-11-12 20:48:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-12 20:48:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-12 20:48:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 653 transitions. [2024-11-12 20:48:26,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3216748768472906 [2024-11-12 20:48:26,751 INFO L175 Difference]: Start difference. First operand has 195 places, 223 transitions, 2232 flow. Second operand 29 states and 653 transitions. [2024-11-12 20:48:26,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 654 transitions, 6223 flow [2024-11-12 20:48:29,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 654 transitions, 5881 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-11-12 20:48:29,152 INFO L231 Difference]: Finished difference. Result has 227 places, 273 transitions, 2772 flow [2024-11-12 20:48:29,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2772, PETRI_PLACES=227, PETRI_TRANSITIONS=273} [2024-11-12 20:48:29,152 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 159 predicate places. [2024-11-12 20:48:29,153 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 273 transitions, 2772 flow [2024-11-12 20:48:29,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.423076923076923) internal successors, (427), 26 states have internal predecessors, (427), 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 20:48:29,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:29,153 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, 1, 1] [2024-11-12 20:48:29,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 20:48:29,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:29,354 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-12 20:48:29,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash 298265733, now seen corresponding path program 1 times [2024-11-12 20:48:29,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:29,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289803485] [2024-11-12 20:48:29,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:29,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:30,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:30,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289803485] [2024-11-12 20:48:30,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289803485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:30,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797969337] [2024-11-12 20:48:30,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:30,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:30,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:30,463 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:30,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 20:48:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:30,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-12 20:48:30,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:30,611 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 23 treesize of output 1 [2024-11-12 20:48:31,051 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 20:48:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:31,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:31,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-12 20:48:31,401 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 16 [2024-11-12 20:48:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:48:31,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797969337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:31,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:31,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 28 [2024-11-12 20:48:31,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294245290] [2024-11-12 20:48:31,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:31,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-12 20:48:31,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:31,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-12 20:48:31,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2024-11-12 20:48:31,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-11-12 20:48:31,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 273 transitions, 2772 flow. Second operand has 29 states, 29 states have (on average 19.06896551724138) internal successors, (553), 29 states have internal predecessors, (553), 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 20:48:31,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:31,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-11-12 20:48:31,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand