./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:44:54,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:44:54,643 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:44:54,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:44:54,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:44:54,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:44:54,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:44:54,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:44:54,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:44:54,698 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:44:54,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:44:54,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:44:54,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:44:54,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:44:54,703 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:44:54,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:44:54,704 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:44:54,704 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:44:54,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:44:54,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:44:54,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:44:54,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:44:54,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:44:54,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:44:54,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:44:54,709 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:44:54,709 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:44:54,709 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:44:54,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:44:54,709 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:44:54,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:44:54,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:44:54,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:44:54,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:44:54,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:44:54,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:44:54,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:44:54,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:44:54,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:44:54,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:44:54,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:44:54,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:44:54,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:44:54,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:44:54,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 [2024-10-24 23:44:54,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:44:54,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:44:54,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:44:54,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:44:54,976 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:44:54,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-10-24 23:44:56,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:44:56,639 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:44:56,639 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-10-24 23:44:56,650 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef939e50e/5d1de26529ce414ba00b0ad76df47442/FLAGd9b1277d2 [2024-10-24 23:44:56,996 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef939e50e/5d1de26529ce414ba00b0ad76df47442 [2024-10-24 23:44:57,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:44:57,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:44:57,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:44:57,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:44:57,013 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:44:57,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:44:56" (1/1) ... [2024-10-24 23:44:57,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b601cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57, skipping insertion in model container [2024-10-24 23:44:57,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:44:56" (1/1) ... [2024-10-24 23:44:57,060 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:44:57,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:44:57,373 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:44:57,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:44:57,422 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:44:57,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57 WrapperNode [2024-10-24 23:44:57,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:44:57,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:44:57,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:44:57,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:44:57,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,481 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 216 [2024-10-24 23:44:57,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:44:57,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:44:57,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:44:57,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:44:57,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,506 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,547 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 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]. [2024-10-24 23:44:57,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:44:57,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:44:57,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:44:57,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:44:57,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (1/1) ... [2024-10-24 23:44:57,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:44:57,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:57,641 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) [2024-10-24 23:44:57,643 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 [2024-10-24 23:44:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:44:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:44:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:44:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:44:57,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:44:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:44:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:44:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:44:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:44:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:44:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:44:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:44:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:44:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:44:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:44:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:44:57,679 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:44:57,800 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:44:57,803 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:44:58,177 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:44:58,178 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:44:58,370 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:44:58,371 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 23:44:58,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:44:58 BoogieIcfgContainer [2024-10-24 23:44:58,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:44:58,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:44:58,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:44:58,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:44:58,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:44:56" (1/3) ... [2024-10-24 23:44:58,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78aeb05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:44:58, skipping insertion in model container [2024-10-24 23:44:58,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:44:57" (2/3) ... [2024-10-24 23:44:58,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78aeb05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:44:58, skipping insertion in model container [2024-10-24 23:44:58,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:44:58" (3/3) ... [2024-10-24 23:44:58,379 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2024-10-24 23:44:58,393 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:44:58,394 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-24 23:44:58,394 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:44:58,452 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 23:44:58,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 114 flow [2024-10-24 23:44:58,515 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-10-24 23:44:58,515 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 23:44:58,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 48 events. 4/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-24 23:44:58,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 114 flow [2024-10-24 23:44:58,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 46 transitions, 101 flow [2024-10-24 23:44:58,535 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:44:58,541 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;@3075e6f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:44:58,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-10-24 23:44:58,544 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:44:58,548 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:44:58,548 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:44:58,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:58,549 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:44:58,550 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:44:58,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 668136, now seen corresponding path program 1 times [2024-10-24 23:44:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:58,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003019779] [2024-10-24 23:44:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:58,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:58,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003019779] [2024-10-24 23:44:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003019779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:58,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:58,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:44:58,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028720389] [2024-10-24 23:44:58,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:58,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:44:58,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:58,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:44:58,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:44:58,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-24 23:44:58,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-24 23:44:58,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:58,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-24 23:44:58,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:59,038 INFO L124 PetriNetUnfolderBase]: 213/466 cut-off events. [2024-10-24 23:44:59,038 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 23:44:59,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 466 events. 213/466 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2436 event pairs, 128 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 755. Up to 327 conditions per place. [2024-10-24 23:44:59,044 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 20 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-10-24 23:44:59,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 141 flow [2024-10-24 23:44:59,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:44:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:44:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-10-24 23:44:59,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-10-24 23:44:59,056 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 101 flow. Second operand 4 states and 96 transitions. [2024-10-24 23:44:59,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 141 flow [2024-10-24 23:44:59,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:44:59,061 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 96 flow [2024-10-24 23:44:59,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-10-24 23:44:59,065 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2024-10-24 23:44:59,066 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 96 flow [2024-10-24 23:44:59,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-24 23:44:59,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:59,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 23:44:59,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:44:59,067 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:44:59,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:59,067 INFO L85 PathProgramCache]: Analyzing trace with hash 20712876, now seen corresponding path program 1 times [2024-10-24 23:44:59,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:59,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283003728] [2024-10-24 23:44:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:59,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:59,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:59,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283003728] [2024-10-24 23:44:59,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283003728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:59,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:59,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:44:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110925819] [2024-10-24 23:44:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:59,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:44:59,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:44:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:44:59,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-24 23:44:59,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-24 23:44:59,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:59,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-24 23:44:59,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:59,250 INFO L124 PetriNetUnfolderBase]: 215/474 cut-off events. [2024-10-24 23:44:59,250 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 23:44:59,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 474 events. 215/474 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2465 event pairs, 128 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 795. Up to 336 conditions per place. [2024-10-24 23:44:59,261 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2024-10-24 23:44:59,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 182 flow [2024-10-24 23:44:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:44:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:44:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-10-24 23:44:59,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-10-24 23:44:59,263 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 96 flow. Second operand 4 states and 98 transitions. [2024-10-24 23:44:59,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 182 flow [2024-10-24 23:44:59,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:44:59,269 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 140 flow [2024-10-24 23:44:59,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-10-24 23:44:59,269 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2024-10-24 23:44:59,269 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 140 flow [2024-10-24 23:44:59,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-24 23:44:59,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:59,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:59,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:44:59,270 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:44:59,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:59,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1428888319, now seen corresponding path program 1 times [2024-10-24 23:44:59,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:59,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852663481] [2024-10-24 23:44:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:59,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:59,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852663481] [2024-10-24 23:44:59,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852663481] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:59,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:59,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:44:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156955784] [2024-10-24 23:44:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:59,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:44:59,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:44:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:44:59,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-24 23:44:59,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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) [2024-10-24 23:44:59,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:59,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-24 23:44:59,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:59,622 INFO L124 PetriNetUnfolderBase]: 232/522 cut-off events. [2024-10-24 23:44:59,622 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-24 23:44:59,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 522 events. 232/522 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2749 event pairs, 146 based on Foata normal form. 14/406 useless extension candidates. Maximal degree in co-relation 807. Up to 335 conditions per place. [2024-10-24 23:44:59,625 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 33 selfloop transitions, 4 changer transitions 2/55 dead transitions. [2024-10-24 23:44:59,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 240 flow [2024-10-24 23:44:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:44:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:44:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-24 23:44:59,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-24 23:44:59,627 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 140 flow. Second operand 4 states and 120 transitions. [2024-10-24 23:44:59,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 240 flow [2024-10-24 23:44:59,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:44:59,628 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 157 flow [2024-10-24 23:44:59,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-10-24 23:44:59,629 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2024-10-24 23:44:59,629 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 157 flow [2024-10-24 23:44:59,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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) [2024-10-24 23:44:59,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:59,630 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:44:59,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:44:59,630 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:44:59,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:59,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1417338175, now seen corresponding path program 1 times [2024-10-24 23:44:59,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:59,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684156390] [2024-10-24 23:44:59,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:59,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684156390] [2024-10-24 23:44:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684156390] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514830447] [2024-10-24 23:44:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:59,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:59,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:59,684 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) [2024-10-24 23:44:59,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:44:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:59,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:44:59,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:59,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:59,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514830447] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:59,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:59,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-24 23:44:59,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780487014] [2024-10-24 23:44:59,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:59,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 23:44:59,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:59,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 23:44:59,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 23:44:59,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-24 23:44:59,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 157 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-10-24 23:44:59,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:59,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-24 23:44:59,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:59,962 INFO L124 PetriNetUnfolderBase]: 238/546 cut-off events. [2024-10-24 23:44:59,962 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-24 23:44:59,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 546 events. 238/546 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2967 event pairs, 146 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 928. Up to 381 conditions per place. [2024-10-24 23:44:59,965 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 25 changer transitions 0/64 dead transitions. [2024-10-24 23:44:59,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 341 flow [2024-10-24 23:44:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:44:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:44:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-10-24 23:44:59,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.432 [2024-10-24 23:44:59,967 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 157 flow. Second operand 10 states and 216 transitions. [2024-10-24 23:44:59,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 341 flow [2024-10-24 23:44:59,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:44:59,970 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 319 flow [2024-10-24 23:44:59,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=319, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-10-24 23:44:59,971 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-10-24 23:44:59,971 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 319 flow [2024-10-24 23:44:59,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-10-24 23:44:59,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:59,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:59,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:45:00,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:00,172 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:00,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:00,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1214008352, now seen corresponding path program 1 times [2024-10-24 23:45:00,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:00,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010409857] [2024-10-24 23:45:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:00,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010409857] [2024-10-24 23:45:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010409857] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:45:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:45:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:45:00,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334545675] [2024-10-24 23:45:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:45:00,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:45:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:45:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:45:00,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-24 23:45:00,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 319 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) [2024-10-24 23:45:00,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:00,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-24 23:45:00,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:00,485 INFO L124 PetriNetUnfolderBase]: 269/651 cut-off events. [2024-10-24 23:45:00,485 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-10-24 23:45:00,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 651 events. 269/651 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3676 event pairs, 174 based on Foata normal form. 14/527 useless extension candidates. Maximal degree in co-relation 1314. Up to 396 conditions per place. [2024-10-24 23:45:00,492 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 65 selfloop transitions, 3 changer transitions 4/88 dead transitions. [2024-10-24 23:45:00,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 595 flow [2024-10-24 23:45:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:45:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:45:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-10-24 23:45:00,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-10-24 23:45:00,497 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 319 flow. Second operand 4 states and 123 transitions. [2024-10-24 23:45:00,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 595 flow [2024-10-24 23:45:00,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 501 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-10-24 23:45:00,501 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 270 flow [2024-10-24 23:45:00,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-10-24 23:45:00,506 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-10-24 23:45:00,506 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 270 flow [2024-10-24 23:45:00,506 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) [2024-10-24 23:45:00,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:00,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:00,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:45:00,506 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:00,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash 147329721, now seen corresponding path program 1 times [2024-10-24 23:45:00,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:00,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103028190] [2024-10-24 23:45:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:00,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:00,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:00,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:00,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103028190] [2024-10-24 23:45:00,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103028190] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:00,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660472166] [2024-10-24 23:45:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:00,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:00,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:00,642 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) [2024-10-24 23:45:00,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:45:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:00,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:45:00,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:00,729 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:45:00,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660472166] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:45:00,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:45:00,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-24 23:45:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223121068] [2024-10-24 23:45:00,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:45:00,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:45:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:45:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:45:00,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-24 23:45:00,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-10-24 23:45:00,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:00,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-24 23:45:00,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:00,793 INFO L124 PetriNetUnfolderBase]: 204/539 cut-off events. [2024-10-24 23:45:00,793 INFO L125 PetriNetUnfolderBase]: For 132/140 co-relation queries the response was YES. [2024-10-24 23:45:00,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 539 events. 204/539 cut-off events. For 132/140 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2994 event pairs, 132 based on Foata normal form. 0/461 useless extension candidates. Maximal degree in co-relation 1092. Up to 382 conditions per place. [2024-10-24 23:45:00,796 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 45 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2024-10-24 23:45:00,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 354 flow [2024-10-24 23:45:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:45:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:45:00,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-24 23:45:00,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-10-24 23:45:00,797 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 270 flow. Second operand 3 states and 84 transitions. [2024-10-24 23:45:00,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 354 flow [2024-10-24 23:45:00,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 342 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-24 23:45:00,799 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 252 flow [2024-10-24 23:45:00,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2024-10-24 23:45:00,800 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-10-24 23:45:00,800 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 252 flow [2024-10-24 23:45:00,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-10-24 23:45:00,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:00,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:00,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 23:45:01,001 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,SelfDestructingSolverStorable5 [2024-10-24 23:45:01,002 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:01,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1655825365, now seen corresponding path program 1 times [2024-10-24 23:45:01,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:01,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31949039] [2024-10-24 23:45:01,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:01,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:01,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:01,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31949039] [2024-10-24 23:45:01,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31949039] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:01,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14078690] [2024-10-24 23:45:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:01,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:01,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:01,084 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) [2024-10-24 23:45:01,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:45:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:01,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:45:01,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:01,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:45:01,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14078690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:45:01,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:45:01,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-24 23:45:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629373797] [2024-10-24 23:45:01,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:45:01,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:45:01,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:01,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:45:01,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:45:01,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-24 23:45:01,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-10-24 23:45:01,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:01,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-24 23:45:01,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:01,218 INFO L124 PetriNetUnfolderBase]: 150/435 cut-off events. [2024-10-24 23:45:01,218 INFO L125 PetriNetUnfolderBase]: For 113/116 co-relation queries the response was YES. [2024-10-24 23:45:01,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 435 events. 150/435 cut-off events. For 113/116 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2312 event pairs, 96 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 912. Up to 298 conditions per place. [2024-10-24 23:45:01,220 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 42 selfloop transitions, 1 changer transitions 1/60 dead transitions. [2024-10-24 23:45:01,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 332 flow [2024-10-24 23:45:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:45:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:45:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-24 23:45:01,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-10-24 23:45:01,221 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 252 flow. Second operand 3 states and 82 transitions. [2024-10-24 23:45:01,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 332 flow [2024-10-24 23:45:01,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:45:01,223 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 238 flow [2024-10-24 23:45:01,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-10-24 23:45:01,224 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-10-24 23:45:01,224 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 238 flow [2024-10-24 23:45:01,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-10-24 23:45:01,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:01,224 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:45:01,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:45:01,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:01,426 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:01,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:01,426 INFO L85 PathProgramCache]: Analyzing trace with hash 731807084, now seen corresponding path program 2 times [2024-10-24 23:45:01,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:01,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596609199] [2024-10-24 23:45:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:01,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:01,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596609199] [2024-10-24 23:45:01,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596609199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:01,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373371197] [2024-10-24 23:45:01,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:45:01,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:01,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:01,550 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) [2024-10-24 23:45:01,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:45:01,615 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:45:01,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:45:01,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:45:01,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:45:01,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:45:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:45:01,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373371197] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:45:01,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:45:01,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:45:01,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822983262] [2024-10-24 23:45:01,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:45:01,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:45:01,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:45:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:45:01,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-24 23:45:01,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 238 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2024-10-24 23:45:01,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:01,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-24 23:45:01,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:02,014 INFO L124 PetriNetUnfolderBase]: 132/378 cut-off events. [2024-10-24 23:45:02,015 INFO L125 PetriNetUnfolderBase]: For 158/161 co-relation queries the response was YES. [2024-10-24 23:45:02,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 378 events. 132/378 cut-off events. For 158/161 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1889 event pairs, 75 based on Foata normal form. 4/349 useless extension candidates. Maximal degree in co-relation 800. Up to 217 conditions per place. [2024-10-24 23:45:02,017 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 17 selfloop transitions, 33 changer transitions 0/64 dead transitions. [2024-10-24 23:45:02,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 64 transitions, 357 flow [2024-10-24 23:45:02,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:45:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:45:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 437 transitions. [2024-10-24 23:45:02,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3641666666666667 [2024-10-24 23:45:02,019 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 238 flow. Second operand 24 states and 437 transitions. [2024-10-24 23:45:02,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 64 transitions, 357 flow [2024-10-24 23:45:02,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 64 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:45:02,021 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 335 flow [2024-10-24 23:45:02,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=335, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-10-24 23:45:02,022 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 31 predicate places. [2024-10-24 23:45:02,022 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 335 flow [2024-10-24 23:45:02,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2024-10-24 23:45:02,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:02,023 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:02,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:45:02,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:02,224 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:02,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:02,224 INFO L85 PathProgramCache]: Analyzing trace with hash -756417951, now seen corresponding path program 1 times [2024-10-24 23:45:02,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:02,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666204009] [2024-10-24 23:45:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:02,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:45:02,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:02,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666204009] [2024-10-24 23:45:02,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666204009] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:45:02,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:45:02,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:45:02,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631324251] [2024-10-24 23:45:02,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:45:02,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:45:02,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:45:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:45:02,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-24 23:45:02,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-24 23:45:02,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:02,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-24 23:45:02,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:02,330 INFO L124 PetriNetUnfolderBase]: 122/345 cut-off events. [2024-10-24 23:45:02,330 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-10-24 23:45:02,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 345 events. 122/345 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1620 event pairs, 40 based on Foata normal form. 6/325 useless extension candidates. Maximal degree in co-relation 810. Up to 124 conditions per place. [2024-10-24 23:45:02,332 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 52 selfloop transitions, 2 changer transitions 1/70 dead transitions. [2024-10-24 23:45:02,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 462 flow [2024-10-24 23:45:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:45:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:45:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-24 23:45:02,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-10-24 23:45:02,333 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 335 flow. Second operand 3 states and 87 transitions. [2024-10-24 23:45:02,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 462 flow [2024-10-24 23:45:02,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 365 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-10-24 23:45:02,335 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 252 flow [2024-10-24 23:45:02,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-10-24 23:45:02,335 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-10-24 23:45:02,335 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 252 flow [2024-10-24 23:45:02,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-24 23:45:02,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:02,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:02,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:45:02,336 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:02,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:02,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2063574928, now seen corresponding path program 1 times [2024-10-24 23:45:02,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:02,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344129816] [2024-10-24 23:45:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:02,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:45:02,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344129816] [2024-10-24 23:45:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344129816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:45:02,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:45:02,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:45:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67704253] [2024-10-24 23:45:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:45:02,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:45:02,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:45:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:45:02,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-24 23:45:02,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-24 23:45:02,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:02,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-24 23:45:02,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:02,421 INFO L124 PetriNetUnfolderBase]: 104/305 cut-off events. [2024-10-24 23:45:02,422 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-10-24 23:45:02,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 305 events. 104/305 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1293 event pairs, 42 based on Foata normal form. 5/292 useless extension candidates. Maximal degree in co-relation 708. Up to 117 conditions per place. [2024-10-24 23:45:02,423 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 53 selfloop transitions, 2 changer transitions 3/73 dead transitions. [2024-10-24 23:45:02,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 394 flow [2024-10-24 23:45:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:45:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:45:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-10-24 23:45:02,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-10-24 23:45:02,424 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 252 flow. Second operand 3 states and 89 transitions. [2024-10-24 23:45:02,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 394 flow [2024-10-24 23:45:02,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 387 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 23:45:02,426 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 260 flow [2024-10-24 23:45:02,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-10-24 23:45:02,426 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-10-24 23:45:02,426 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 260 flow [2024-10-24 23:45:02,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-24 23:45:02,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:02,427 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-24 23:45:02,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:45:02,427 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:02,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1733778148, now seen corresponding path program 1 times [2024-10-24 23:45:02,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:02,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222127455] [2024-10-24 23:45:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:02,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:02,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:02,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222127455] [2024-10-24 23:45:02,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222127455] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:02,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041402597] [2024-10-24 23:45:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:02,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:02,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:02,579 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) [2024-10-24 23:45:02,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:45:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:02,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:45:02,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:02,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:45:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:02,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041402597] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:45:02,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:45:02,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-24 23:45:02,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782685739] [2024-10-24 23:45:02,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:45:02,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:45:02,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:45:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:45:02,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-24 23:45:02,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 260 flow. Second operand has 28 states, 28 states have (on average 17.071428571428573) internal successors, (478), 28 states have internal predecessors, (478), 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) [2024-10-24 23:45:02,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:02,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-24 23:45:02,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:03,261 INFO L124 PetriNetUnfolderBase]: 125/393 cut-off events. [2024-10-24 23:45:03,261 INFO L125 PetriNetUnfolderBase]: For 491/491 co-relation queries the response was YES. [2024-10-24 23:45:03,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 393 events. 125/393 cut-off events. For 491/491 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1675 event pairs, 72 based on Foata normal form. 14/374 useless extension candidates. Maximal degree in co-relation 994. Up to 206 conditions per place. [2024-10-24 23:45:03,263 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 22 selfloop transitions, 72 changer transitions 0/108 dead transitions. [2024-10-24 23:45:03,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 108 transitions, 658 flow [2024-10-24 23:45:03,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:45:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:45:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 515 transitions. [2024-10-24 23:45:03,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39615384615384613 [2024-10-24 23:45:03,266 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 260 flow. Second operand 26 states and 515 transitions. [2024-10-24 23:45:03,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 108 transitions, 658 flow [2024-10-24 23:45:03,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 108 transitions, 650 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 23:45:03,269 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 658 flow [2024-10-24 23:45:03,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=658, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2024-10-24 23:45:03,270 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 54 predicate places. [2024-10-24 23:45:03,270 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 658 flow [2024-10-24 23:45:03,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 17.071428571428573) internal successors, (478), 28 states have internal predecessors, (478), 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) [2024-10-24 23:45:03,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:03,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:03,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:45:03,474 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 [2024-10-24 23:45:03,475 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:03,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:03,475 INFO L85 PathProgramCache]: Analyzing trace with hash -755873469, now seen corresponding path program 1 times [2024-10-24 23:45:03,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:03,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625538803] [2024-10-24 23:45:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:03,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:03,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625538803] [2024-10-24 23:45:03,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625538803] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033631813] [2024-10-24 23:45:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:03,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:03,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:03,825 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) [2024-10-24 23:45:03,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:45:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:03,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 23:45:03,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:03,964 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 [2024-10-24 23:45:04,192 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-24 23:45:04,192 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 [2024-10-24 23:45:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:04,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:45:04,366 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 [2024-10-24 23:45:04,370 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 [2024-10-24 23:45:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:04,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033631813] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:45:04,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:45:04,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-10-24 23:45:04,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594106888] [2024-10-24 23:45:04,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:45:04,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 23:45:04,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:04,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 23:45:04,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-10-24 23:45:04,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 23:45:04,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 658 flow. Second operand has 24 states, 24 states have (on average 13.791666666666666) internal successors, (331), 24 states have internal predecessors, (331), 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) [2024-10-24 23:45:04,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:04,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 23:45:04,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:05,571 INFO L124 PetriNetUnfolderBase]: 377/874 cut-off events. [2024-10-24 23:45:05,572 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-10-24 23:45:05,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 874 events. 377/874 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4567 event pairs, 63 based on Foata normal form. 0/818 useless extension candidates. Maximal degree in co-relation 2209. Up to 134 conditions per place. [2024-10-24 23:45:05,576 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 103 selfloop transitions, 81 changer transitions 11/205 dead transitions. [2024-10-24 23:45:05,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 205 transitions, 1330 flow [2024-10-24 23:45:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 23:45:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-24 23:45:05,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 372 transitions. [2024-10-24 23:45:05,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.372 [2024-10-24 23:45:05,578 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 658 flow. Second operand 20 states and 372 transitions. [2024-10-24 23:45:05,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 205 transitions, 1330 flow [2024-10-24 23:45:05,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 205 transitions, 1145 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-10-24 23:45:05,583 INFO L231 Difference]: Finished difference. Result has 113 places, 119 transitions, 682 flow [2024-10-24 23:45:05,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=682, PETRI_PLACES=113, PETRI_TRANSITIONS=119} [2024-10-24 23:45:05,584 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 64 predicate places. [2024-10-24 23:45:05,584 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 119 transitions, 682 flow [2024-10-24 23:45:05,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.791666666666666) internal successors, (331), 24 states have internal predecessors, (331), 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) [2024-10-24 23:45:05,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:05,584 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:05,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 23:45:05,788 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 [2024-10-24 23:45:05,789 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:05,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:05,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1551120531, now seen corresponding path program 1 times [2024-10-24 23:45:05,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:05,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203635745] [2024-10-24 23:45:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:05,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:06,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203635745] [2024-10-24 23:45:06,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203635745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:06,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920447601] [2024-10-24 23:45:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:06,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:06,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:06,234 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) [2024-10-24 23:45:06,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:45:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:06,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 23:45:06,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:06,384 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 23 treesize of output 7 [2024-10-24 23:45:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:45:06,409 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:45:06,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920447601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:45:06,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:45:06,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-10-24 23:45:06,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525539597] [2024-10-24 23:45:06,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:45:06,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:45:06,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:06,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:45:06,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:45:06,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-10-24 23:45:06,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 119 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-24 23:45:06,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:06,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-10-24 23:45:06,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:06,602 INFO L124 PetriNetUnfolderBase]: 495/1129 cut-off events. [2024-10-24 23:45:06,603 INFO L125 PetriNetUnfolderBase]: For 951/975 co-relation queries the response was YES. [2024-10-24 23:45:06,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 1129 events. 495/1129 cut-off events. For 951/975 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6188 event pairs, 84 based on Foata normal form. 16/1096 useless extension candidates. Maximal degree in co-relation 2991. Up to 320 conditions per place. [2024-10-24 23:45:06,607 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 143 selfloop transitions, 7 changer transitions 5/172 dead transitions. [2024-10-24 23:45:06,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 172 transitions, 1211 flow [2024-10-24 23:45:06,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:45:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:45:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-10-24 23:45:06,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-10-24 23:45:06,609 INFO L175 Difference]: Start difference. First operand has 113 places, 119 transitions, 682 flow. Second operand 7 states and 180 transitions. [2024-10-24 23:45:06,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 172 transitions, 1211 flow [2024-10-24 23:45:06,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 172 transitions, 1182 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 23:45:06,613 INFO L231 Difference]: Finished difference. Result has 116 places, 124 transitions, 703 flow [2024-10-24 23:45:06,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=116, PETRI_TRANSITIONS=124} [2024-10-24 23:45:06,614 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 67 predicate places. [2024-10-24 23:45:06,614 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 124 transitions, 703 flow [2024-10-24 23:45:06,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-24 23:45:06,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:06,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:06,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 23:45:06,815 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 [2024-10-24 23:45:06,815 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:06,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1957671331, now seen corresponding path program 1 times [2024-10-24 23:45:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:06,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153139224] [2024-10-24 23:45:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:06,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:07,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:07,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153139224] [2024-10-24 23:45:07,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153139224] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555833939] [2024-10-24 23:45:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:07,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:07,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:07,092 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) [2024-10-24 23:45:07,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:45:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:07,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-24 23:45:07,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:07,173 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 [2024-10-24 23:45:07,208 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 [2024-10-24 23:45:07,275 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:45:07,275 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 [2024-10-24 23:45:07,303 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 [2024-10-24 23:45:07,408 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 [2024-10-24 23:45:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:07,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:45:07,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:45:07,896 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 54 treesize of output 42 [2024-10-24 23:45:07,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:45:07,910 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 62 treesize of output 54 [2024-10-24 23:45:07,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:45:07,919 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 38 treesize of output 34 [2024-10-24 23:45:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:08,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555833939] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:45:08,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:45:08,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2024-10-24 23:45:08,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684490843] [2024-10-24 23:45:08,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:45:08,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-24 23:45:08,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:08,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-24 23:45:08,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=512, Unknown=2, NotChecked=0, Total=600 [2024-10-24 23:45:08,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-10-24 23:45:08,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 703 flow. Second operand has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 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) [2024-10-24 23:45:08,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:08,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-10-24 23:45:08,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:11,469 INFO L124 PetriNetUnfolderBase]: 2741/5152 cut-off events. [2024-10-24 23:45:11,469 INFO L125 PetriNetUnfolderBase]: For 3966/4064 co-relation queries the response was YES. [2024-10-24 23:45:11,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14450 conditions, 5152 events. 2741/5152 cut-off events. For 3966/4064 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 32873 event pairs, 371 based on Foata normal form. 154/4786 useless extension candidates. Maximal degree in co-relation 14418. Up to 1178 conditions per place. [2024-10-24 23:45:11,498 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 399 selfloop transitions, 161 changer transitions 35/603 dead transitions. [2024-10-24 23:45:11,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 603 transitions, 3948 flow [2024-10-24 23:45:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-24 23:45:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-24 23:45:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 694 transitions. [2024-10-24 23:45:11,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3017391304347826 [2024-10-24 23:45:11,500 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 703 flow. Second operand 46 states and 694 transitions. [2024-10-24 23:45:11,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 603 transitions, 3948 flow [2024-10-24 23:45:11,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 603 transitions, 3944 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:45:11,526 INFO L231 Difference]: Finished difference. Result has 185 places, 260 transitions, 2219 flow [2024-10-24 23:45:11,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2219, PETRI_PLACES=185, PETRI_TRANSITIONS=260} [2024-10-24 23:45:11,527 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2024-10-24 23:45:11,528 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 260 transitions, 2219 flow [2024-10-24 23:45:11,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 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) [2024-10-24 23:45:11,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:11,528 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:11,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 23:45:11,729 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 [2024-10-24 23:45:11,730 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:11,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:11,731 INFO L85 PathProgramCache]: Analyzing trace with hash -138230339, now seen corresponding path program 1 times [2024-10-24 23:45:11,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:11,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136371013] [2024-10-24 23:45:11,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:11,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:12,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:12,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136371013] [2024-10-24 23:45:12,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136371013] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:12,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190101016] [2024-10-24 23:45:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:12,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:12,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:12,200 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) [2024-10-24 23:45:12,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:45:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:12,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 23:45:12,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:12,322 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 [2024-10-24 23:45:12,436 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 [2024-10-24 23:45:12,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:12,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:45:12,700 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 38 treesize of output 34 [2024-10-24 23:45:12,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:45:12,706 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 46 treesize of output 42 [2024-10-24 23:45:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:12,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190101016] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:45:12,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:45:12,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-24 23:45:12,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829451172] [2024-10-24 23:45:12,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:45:12,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 23:45:12,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:12,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 23:45:12,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-10-24 23:45:13,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-10-24 23:45:13,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 260 transitions, 2219 flow. Second operand has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 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) [2024-10-24 23:45:13,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:13,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-10-24 23:45:13,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:15,402 INFO L124 PetriNetUnfolderBase]: 3226/6873 cut-off events. [2024-10-24 23:45:15,402 INFO L125 PetriNetUnfolderBase]: For 48967/49245 co-relation queries the response was YES. [2024-10-24 23:45:15,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28428 conditions, 6873 events. 3226/6873 cut-off events. For 48967/49245 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 55308 event pairs, 241 based on Foata normal form. 361/7169 useless extension candidates. Maximal degree in co-relation 28370. Up to 1227 conditions per place. [2024-10-24 23:45:15,449 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 333 selfloop transitions, 272 changer transitions 8/641 dead transitions. [2024-10-24 23:45:15,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 641 transitions, 6387 flow [2024-10-24 23:45:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-24 23:45:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-24 23:45:15,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 723 transitions. [2024-10-24 23:45:15,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38052631578947366 [2024-10-24 23:45:15,451 INFO L175 Difference]: Start difference. First operand has 185 places, 260 transitions, 2219 flow. Second operand 38 states and 723 transitions. [2024-10-24 23:45:15,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 641 transitions, 6387 flow [2024-10-24 23:45:15,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 641 transitions, 6126 flow, removed 126 selfloop flow, removed 4 redundant places. [2024-10-24 23:45:15,605 INFO L231 Difference]: Finished difference. Result has 228 places, 457 transitions, 4790 flow [2024-10-24 23:45:15,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4790, PETRI_PLACES=228, PETRI_TRANSITIONS=457} [2024-10-24 23:45:15,606 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 179 predicate places. [2024-10-24 23:45:15,606 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 457 transitions, 4790 flow [2024-10-24 23:45:15,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 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) [2024-10-24 23:45:15,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:15,606 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:15,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 23:45:15,808 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 [2024-10-24 23:45:15,809 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:15,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1515227615, now seen corresponding path program 2 times [2024-10-24 23:45:15,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:15,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471343504] [2024-10-24 23:45:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:17,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:17,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471343504] [2024-10-24 23:45:17,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471343504] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:17,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149337482] [2024-10-24 23:45:17,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:45:17,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:17,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:17,363 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) [2024-10-24 23:45:17,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:45:17,444 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:45:17,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:45:17,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:45:17,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:17,535 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 23 treesize of output 7 [2024-10-24 23:45:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-24 23:45:17,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:45:17,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149337482] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:45:17,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:45:17,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 18 [2024-10-24 23:45:17,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852051515] [2024-10-24 23:45:17,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:45:17,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:45:17,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:17,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:45:17,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:45:17,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-10-24 23:45:17,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 457 transitions, 4790 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-24 23:45:17,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:17,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-10-24 23:45:17,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:18,666 INFO L124 PetriNetUnfolderBase]: 3474/7473 cut-off events. [2024-10-24 23:45:18,667 INFO L125 PetriNetUnfolderBase]: For 79070/79454 co-relation queries the response was YES. [2024-10-24 23:45:18,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36343 conditions, 7473 events. 3474/7473 cut-off events. For 79070/79454 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 61804 event pairs, 529 based on Foata normal form. 243/7663 useless extension candidates. Maximal degree in co-relation 36274. Up to 2431 conditions per place. [2024-10-24 23:45:18,747 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 425 selfloop transitions, 100 changer transitions 4/558 dead transitions. [2024-10-24 23:45:18,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 558 transitions, 6820 flow [2024-10-24 23:45:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:45:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:45:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-10-24 23:45:18,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-10-24 23:45:18,748 INFO L175 Difference]: Start difference. First operand has 228 places, 457 transitions, 4790 flow. Second operand 7 states and 183 transitions. [2024-10-24 23:45:18,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 558 transitions, 6820 flow [2024-10-24 23:45:19,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 558 transitions, 6319 flow, removed 186 selfloop flow, removed 11 redundant places. [2024-10-24 23:45:19,299 INFO L231 Difference]: Finished difference. Result has 221 places, 449 transitions, 4573 flow [2024-10-24 23:45:19,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4173, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4573, PETRI_PLACES=221, PETRI_TRANSITIONS=449} [2024-10-24 23:45:19,300 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 172 predicate places. [2024-10-24 23:45:19,300 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 449 transitions, 4573 flow [2024-10-24 23:45:19,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-24 23:45:19,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:19,301 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:19,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 23:45:19,504 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 [2024-10-24 23:45:19,505 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:19,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2046179802, now seen corresponding path program 1 times [2024-10-24 23:45:19,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:19,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798012677] [2024-10-24 23:45:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:19,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:19,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:19,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:19,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798012677] [2024-10-24 23:45:19,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798012677] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:19,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672478177] [2024-10-24 23:45:19,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:19,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:19,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:19,610 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) [2024-10-24 23:45:19,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 23:45:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:19,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:45:19,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:19,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:45:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:19,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672478177] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:45:19,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:45:19,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-24 23:45:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300622762] [2024-10-24 23:45:19,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:45:19,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:45:19,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:19,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:45:19,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:45:19,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-24 23:45:19,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 449 transitions, 4573 flow. Second operand has 15 states, 15 states have (on average 18.266666666666666) internal successors, (274), 15 states have internal predecessors, (274), 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) [2024-10-24 23:45:19,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:19,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-24 23:45:19,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:20,688 INFO L124 PetriNetUnfolderBase]: 1986/4847 cut-off events. [2024-10-24 23:45:20,688 INFO L125 PetriNetUnfolderBase]: For 57573/57989 co-relation queries the response was YES. [2024-10-24 23:45:20,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22973 conditions, 4847 events. 1986/4847 cut-off events. For 57573/57989 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 40375 event pairs, 837 based on Foata normal form. 231/4999 useless extension candidates. Maximal degree in co-relation 22906. Up to 2022 conditions per place. [2024-10-24 23:45:20,723 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 336 selfloop transitions, 64 changer transitions 3/443 dead transitions. [2024-10-24 23:45:20,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 443 transitions, 5232 flow [2024-10-24 23:45:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:45:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 23:45:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 249 transitions. [2024-10-24 23:45:20,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-10-24 23:45:20,727 INFO L175 Difference]: Start difference. First operand has 221 places, 449 transitions, 4573 flow. Second operand 12 states and 249 transitions. [2024-10-24 23:45:20,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 443 transitions, 5232 flow [2024-10-24 23:45:20,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 443 transitions, 5087 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-10-24 23:45:20,857 INFO L231 Difference]: Finished difference. Result has 220 places, 375 transitions, 3819 flow [2024-10-24 23:45:20,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3819, PETRI_PLACES=220, PETRI_TRANSITIONS=375} [2024-10-24 23:45:20,858 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-10-24 23:45:20,858 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 375 transitions, 3819 flow [2024-10-24 23:45:20,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.266666666666666) internal successors, (274), 15 states have internal predecessors, (274), 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) [2024-10-24 23:45:20,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:20,858 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:20,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 23:45:21,060 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 [2024-10-24 23:45:21,060 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:21,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:21,061 INFO L85 PathProgramCache]: Analyzing trace with hash -369533526, now seen corresponding path program 2 times [2024-10-24 23:45:21,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:21,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452134036] [2024-10-24 23:45:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:21,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:45:22,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:22,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452134036] [2024-10-24 23:45:22,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452134036] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:22,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135023968] [2024-10-24 23:45:22,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:45:22,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:22,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:22,023 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) [2024-10-24 23:45:22,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 23:45:22,101 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:45:22,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:45:22,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:45:22,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:22,273 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 23 treesize of output 7 [2024-10-24 23:45:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 23:45:22,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:45:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135023968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:45:22,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:45:22,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2024-10-24 23:45:22,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661280944] [2024-10-24 23:45:22,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:45:22,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:45:22,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:45:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:45:22,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-10-24 23:45:22,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 375 transitions, 3819 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-24 23:45:22,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:22,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-10-24 23:45:22,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:23,293 INFO L124 PetriNetUnfolderBase]: 2405/5352 cut-off events. [2024-10-24 23:45:23,294 INFO L125 PetriNetUnfolderBase]: For 54031/54177 co-relation queries the response was YES. [2024-10-24 23:45:23,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24970 conditions, 5352 events. 2405/5352 cut-off events. For 54031/54177 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 42303 event pairs, 305 based on Foata normal form. 122/5414 useless extension candidates. Maximal degree in co-relation 24904. Up to 2696 conditions per place. [2024-10-24 23:45:23,352 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 348 selfloop transitions, 64 changer transitions 5/443 dead transitions. [2024-10-24 23:45:23,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 443 transitions, 5658 flow [2024-10-24 23:45:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:45:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:45:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-10-24 23:45:23,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-24 23:45:23,353 INFO L175 Difference]: Start difference. First operand has 220 places, 375 transitions, 3819 flow. Second operand 7 states and 175 transitions. [2024-10-24 23:45:23,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 443 transitions, 5658 flow [2024-10-24 23:45:23,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 443 transitions, 5517 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-10-24 23:45:23,552 INFO L231 Difference]: Finished difference. Result has 216 places, 374 transitions, 3856 flow [2024-10-24 23:45:23,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3728, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3856, PETRI_PLACES=216, PETRI_TRANSITIONS=374} [2024-10-24 23:45:23,553 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 167 predicate places. [2024-10-24 23:45:23,553 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 374 transitions, 3856 flow [2024-10-24 23:45:23,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-24 23:45:23,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:23,554 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:23,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-24 23:45:23,754 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 [2024-10-24 23:45:23,755 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:23,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:23,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2067056519, now seen corresponding path program 1 times [2024-10-24 23:45:23,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:23,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752728897] [2024-10-24 23:45:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:23,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:23,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:23,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752728897] [2024-10-24 23:45:23,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752728897] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:23,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348228160] [2024-10-24 23:45:23,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:23,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:23,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:23,902 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) [2024-10-24 23:45:23,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 23:45:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:23,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:45:23,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:24,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:45:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:24,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348228160] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:45:24,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:45:24,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-24 23:45:24,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578352562] [2024-10-24 23:45:24,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:45:24,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:45:24,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:45:24,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:45:24,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-24 23:45:24,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 374 transitions, 3856 flow. Second operand has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 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) [2024-10-24 23:45:24,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:24,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-24 23:45:24,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:24,919 INFO L124 PetriNetUnfolderBase]: 1585/4044 cut-off events. [2024-10-24 23:45:24,919 INFO L125 PetriNetUnfolderBase]: For 38562/38803 co-relation queries the response was YES. [2024-10-24 23:45:24,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18740 conditions, 4044 events. 1585/4044 cut-off events. For 38562/38803 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 32760 event pairs, 748 based on Foata normal form. 118/4094 useless extension candidates. Maximal degree in co-relation 18676. Up to 1923 conditions per place. [2024-10-24 23:45:24,947 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 209 selfloop transitions, 99 changer transitions 24/371 dead transitions. [2024-10-24 23:45:24,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 371 transitions, 4476 flow [2024-10-24 23:45:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 23:45:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 23:45:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-10-24 23:45:24,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-10-24 23:45:24,948 INFO L175 Difference]: Start difference. First operand has 216 places, 374 transitions, 3856 flow. Second operand 8 states and 175 transitions. [2024-10-24 23:45:24,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 371 transitions, 4476 flow [2024-10-24 23:45:25,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 371 transitions, 4376 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-10-24 23:45:25,025 INFO L231 Difference]: Finished difference. Result has 220 places, 327 transitions, 3520 flow [2024-10-24 23:45:25,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3474, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3520, PETRI_PLACES=220, PETRI_TRANSITIONS=327} [2024-10-24 23:45:25,026 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-10-24 23:45:25,026 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 327 transitions, 3520 flow [2024-10-24 23:45:25,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 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) [2024-10-24 23:45:25,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:25,027 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:25,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-24 23:45:25,230 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 [2024-10-24 23:45:25,230 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:25,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:25,231 INFO L85 PathProgramCache]: Analyzing trace with hash 442907941, now seen corresponding path program 2 times [2024-10-24 23:45:25,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:25,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425433244] [2024-10-24 23:45:25,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:25,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:45:25,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:25,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425433244] [2024-10-24 23:45:25,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425433244] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:25,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419972625] [2024-10-24 23:45:25,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:45:25,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:25,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:25,401 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) [2024-10-24 23:45:25,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 23:45:25,485 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:45:25,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:45:25,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:45:25,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:45:25,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:45:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:45:25,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419972625] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:45:25,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:45:25,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-10-24 23:45:25,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630146562] [2024-10-24 23:45:25,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:45:25,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 23:45:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 23:45:25,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-10-24 23:45:25,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-24 23:45:25,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 327 transitions, 3520 flow. Second operand has 21 states, 21 states have (on average 18.285714285714285) internal successors, (384), 21 states have internal predecessors, (384), 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) [2024-10-24 23:45:25,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:25,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-24 23:45:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:26,554 INFO L124 PetriNetUnfolderBase]: 1298/3285 cut-off events. [2024-10-24 23:45:26,554 INFO L125 PetriNetUnfolderBase]: For 29347/29545 co-relation queries the response was YES. [2024-10-24 23:45:26,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15254 conditions, 3285 events. 1298/3285 cut-off events. For 29347/29545 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25192 event pairs, 321 based on Foata normal form. 76/3311 useless extension candidates. Maximal degree in co-relation 15189. Up to 1709 conditions per place. [2024-10-24 23:45:26,575 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 156 selfloop transitions, 99 changer transitions 55/343 dead transitions. [2024-10-24 23:45:26,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 343 transitions, 4152 flow [2024-10-24 23:45:26,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 23:45:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 23:45:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-10-24 23:45:26,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43272727272727274 [2024-10-24 23:45:26,577 INFO L175 Difference]: Start difference. First operand has 220 places, 327 transitions, 3520 flow. Second operand 11 states and 238 transitions. [2024-10-24 23:45:26,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 343 transitions, 4152 flow [2024-10-24 23:45:26,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 343 transitions, 3918 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-10-24 23:45:26,633 INFO L231 Difference]: Finished difference. Result has 220 places, 283 transitions, 3036 flow [2024-10-24 23:45:26,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3036, PETRI_PLACES=220, PETRI_TRANSITIONS=283} [2024-10-24 23:45:26,633 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-10-24 23:45:26,633 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 283 transitions, 3036 flow [2024-10-24 23:45:26,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.285714285714285) internal successors, (384), 21 states have internal predecessors, (384), 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) [2024-10-24 23:45:26,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:26,634 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:26,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-24 23:45:26,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:26,835 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:26,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:26,835 INFO L85 PathProgramCache]: Analyzing trace with hash 755845743, now seen corresponding path program 2 times [2024-10-24 23:45:26,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:26,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648681995] [2024-10-24 23:45:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:26,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:45:26,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648681995] [2024-10-24 23:45:26,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648681995] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269747905] [2024-10-24 23:45:26,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:45:26,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:26,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:26,934 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:45:26,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 23:45:27,012 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:45:27,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:45:27,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:45:27,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:45:27,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:45:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:45:27,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269747905] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:45:27,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:45:27,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-24 23:45:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923628041] [2024-10-24 23:45:27,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:45:27,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:45:27,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:27,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:45:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:45:27,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-24 23:45:27,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 283 transitions, 3036 flow. Second operand has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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) [2024-10-24 23:45:27,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:27,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-24 23:45:27,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:27,729 INFO L124 PetriNetUnfolderBase]: 944/2321 cut-off events. [2024-10-24 23:45:27,730 INFO L125 PetriNetUnfolderBase]: For 24682/24968 co-relation queries the response was YES. [2024-10-24 23:45:27,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 2321 events. 944/2321 cut-off events. For 24682/24968 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 15824 event pairs, 244 based on Foata normal form. 64/2347 useless extension candidates. Maximal degree in co-relation 11086. Up to 1056 conditions per place. [2024-10-24 23:45:27,747 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 119 selfloop transitions, 64 changer transitions 78/285 dead transitions. [2024-10-24 23:45:27,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 285 transitions, 3425 flow [2024-10-24 23:45:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 23:45:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 23:45:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 275 transitions. [2024-10-24 23:45:27,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-10-24 23:45:27,749 INFO L175 Difference]: Start difference. First operand has 220 places, 283 transitions, 3036 flow. Second operand 13 states and 275 transitions. [2024-10-24 23:45:27,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 285 transitions, 3425 flow [2024-10-24 23:45:27,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 285 transitions, 3116 flow, removed 49 selfloop flow, removed 17 redundant places. [2024-10-24 23:45:27,790 INFO L231 Difference]: Finished difference. Result has 192 places, 203 transitions, 2046 flow [2024-10-24 23:45:27,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2046, PETRI_PLACES=192, PETRI_TRANSITIONS=203} [2024-10-24 23:45:27,791 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 143 predicate places. [2024-10-24 23:45:27,791 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 203 transitions, 2046 flow [2024-10-24 23:45:27,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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) [2024-10-24 23:45:27,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:27,791 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:27,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-24 23:45:27,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:27,992 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:27,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:27,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1694712449, now seen corresponding path program 1 times [2024-10-24 23:45:27,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:27,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429589842] [2024-10-24 23:45:27,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:27,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 23:45:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:28,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429589842] [2024-10-24 23:45:28,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429589842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:45:28,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:45:28,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:45:28,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403346380] [2024-10-24 23:45:28,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:45:28,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:45:28,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:45:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:45:28,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-24 23:45:28,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 203 transitions, 2046 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-24 23:45:28,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:28,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-24 23:45:28,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:28,311 INFO L124 PetriNetUnfolderBase]: 778/1898 cut-off events. [2024-10-24 23:45:28,312 INFO L125 PetriNetUnfolderBase]: For 12283/12600 co-relation queries the response was YES. [2024-10-24 23:45:28,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8330 conditions, 1898 events. 778/1898 cut-off events. For 12283/12600 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12057 event pairs, 248 based on Foata normal form. 72/1912 useless extension candidates. Maximal degree in co-relation 8275. Up to 597 conditions per place. [2024-10-24 23:45:28,325 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 203 selfloop transitions, 12 changer transitions 0/240 dead transitions. [2024-10-24 23:45:28,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 240 transitions, 2785 flow [2024-10-24 23:45:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:45:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:45:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-24 23:45:28,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-24 23:45:28,326 INFO L175 Difference]: Start difference. First operand has 192 places, 203 transitions, 2046 flow. Second operand 4 states and 120 transitions. [2024-10-24 23:45:28,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 240 transitions, 2785 flow [2024-10-24 23:45:28,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 240 transitions, 2579 flow, removed 39 selfloop flow, removed 18 redundant places. [2024-10-24 23:45:28,346 INFO L231 Difference]: Finished difference. Result has 164 places, 201 transitions, 1909 flow [2024-10-24 23:45:28,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1909, PETRI_PLACES=164, PETRI_TRANSITIONS=201} [2024-10-24 23:45:28,347 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 115 predicate places. [2024-10-24 23:45:28,347 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 201 transitions, 1909 flow [2024-10-24 23:45:28,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-24 23:45:28,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:28,347 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:28,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 23:45:28,347 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:28,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:28,348 INFO L85 PathProgramCache]: Analyzing trace with hash 744012687, now seen corresponding path program 3 times [2024-10-24 23:45:28,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:28,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338403082] [2024-10-24 23:45:28,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:28,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 23:45:28,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:28,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338403082] [2024-10-24 23:45:28,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338403082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:45:28,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:45:28,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:45:28,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143206668] [2024-10-24 23:45:28,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:45:28,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:45:28,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:28,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:45:28,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:45:28,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-24 23:45:28,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 201 transitions, 1909 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:45:28,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:45:28,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-24 23:45:28,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:45:28,700 INFO L124 PetriNetUnfolderBase]: 939/2402 cut-off events. [2024-10-24 23:45:28,700 INFO L125 PetriNetUnfolderBase]: For 11463/11841 co-relation queries the response was YES. [2024-10-24 23:45:28,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9682 conditions, 2402 events. 939/2402 cut-off events. For 11463/11841 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17223 event pairs, 335 based on Foata normal form. 89/2406 useless extension candidates. Maximal degree in co-relation 9635. Up to 778 conditions per place. [2024-10-24 23:45:28,713 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 200 selfloop transitions, 22 changer transitions 0/246 dead transitions. [2024-10-24 23:45:28,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 246 transitions, 2771 flow [2024-10-24 23:45:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:45:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:45:28,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-10-24 23:45:28,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-10-24 23:45:28,715 INFO L175 Difference]: Start difference. First operand has 164 places, 201 transitions, 1909 flow. Second operand 4 states and 122 transitions. [2024-10-24 23:45:28,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 246 transitions, 2771 flow [2024-10-24 23:45:28,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 246 transitions, 2747 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-24 23:45:28,729 INFO L231 Difference]: Finished difference. Result has 168 places, 206 transitions, 2027 flow [2024-10-24 23:45:28,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2027, PETRI_PLACES=168, PETRI_TRANSITIONS=206} [2024-10-24 23:45:28,730 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 119 predicate places. [2024-10-24 23:45:28,730 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 206 transitions, 2027 flow [2024-10-24 23:45:28,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:45:28,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:45:28,730 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:45:28,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 23:45:28,730 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-24 23:45:28,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:45:28,730 INFO L85 PathProgramCache]: Analyzing trace with hash -583904322, now seen corresponding path program 1 times [2024-10-24 23:45:28,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:45:28,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609817379] [2024-10-24 23:45:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:28,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:45:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:45:29,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:45:29,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609817379] [2024-10-24 23:45:29,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609817379] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:45:29,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38170124] [2024-10-24 23:45:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:45:29,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:45:29,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:45:29,187 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:45:29,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 23:45:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:45:29,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-24 23:45:29,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:45:29,321 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 [2024-10-24 23:45:29,416 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 [2024-10-24 23:45:29,488 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:45:29,488 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 [2024-10-24 23:45:29,561 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 23 treesize of output 1 [2024-10-24 23:45:29,684 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-10-24 23:45:29,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2024-10-24 23:45:31,000 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-24 23:45:31,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 17 [2024-10-24 23:45:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:31,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:45:45,293 INFO L349 Elim1Store]: treesize reduction 35, result has 63.2 percent of original size [2024-10-24 23:45:45,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 3081 treesize of output 2860 [2024-10-24 23:45:45,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:45:45,366 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 989 treesize of output 961 [2024-10-24 23:45:45,999 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 265 treesize of output 247 [2024-10-24 23:45:46,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:45:46,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 239 treesize of output 182 [2024-10-24 23:45:46,748 INFO L349 Elim1Store]: treesize reduction 5, result has 93.6 percent of original size [2024-10-24 23:45:46,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1707 treesize of output 1430 [2024-10-24 23:45:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:45:53,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38170124] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:45:53,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:45:53,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 21] total 54 [2024-10-24 23:45:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584605686] [2024-10-24 23:45:53,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:45:53,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-10-24 23:45:53,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:45:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-10-24 23:45:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2765, Unknown=3, NotChecked=0, Total=3080 [2024-10-24 23:45:58,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:46:02,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:46:06,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:46:10,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:46:14,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:46:18,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:46:18,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 50 [2024-10-24 23:46:18,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 206 transitions, 2027 flow. Second operand has 56 states, 56 states have (on average 5.982142857142857) internal successors, (335), 56 states have internal predecessors, (335), 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) [2024-10-24 23:46:18,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:46:18,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 50 [2024-10-24 23:46:18,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand