./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 6d4b02aa42f7b4e354f6555c82b5caeb47836d867813f6f1b24237fc4ad268ae --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:47:55,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:47:55,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:47:55,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:47:55,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:47:55,711 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:47:55,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:47:55,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:47:55,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:47:55,712 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:47:55,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:47:55,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:47:55,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:47:55,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:47:55,714 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:47:55,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:47:55,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:47:55,714 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:47:55,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:47:55,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:47:55,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:47:55,720 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:47:55,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:47:55,720 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:47:55,721 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:47:55,721 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:47:55,721 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:47:55,721 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:47:55,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:47:55,725 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:47:55,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:47:55,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:47:55,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:47:55,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:47:55,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:47:55,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:47:55,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:47:55,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:47:55,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:47:55,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:47:55,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:47:55,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:47:55,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:47:55,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:47:55,728 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d4b02aa42f7b4e354f6555c82b5caeb47836d867813f6f1b24237fc4ad268ae [2024-10-11 23:47:55,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:47:55,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:47:55,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:47:55,975 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:47:55,975 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:47:55,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2024-10-11 23:47:57,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:47:57,495 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:47:57,496 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2024-10-11 23:47:57,506 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9381d3984/d4024a6280394a819b26dc8f52e88d4b/FLAG398f331b6 [2024-10-11 23:47:57,826 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9381d3984/d4024a6280394a819b26dc8f52e88d4b [2024-10-11 23:47:57,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:47:57,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:47:57,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:47:57,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:47:57,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:47:57,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:47:57" (1/1) ... [2024-10-11 23:47:57,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa03f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:57, skipping insertion in model container [2024-10-11 23:47:57,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:47:57" (1/1) ... [2024-10-11 23:47:57,874 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:47:58,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:47:58,173 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:47:58,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:47:58,267 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:47:58,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58 WrapperNode [2024-10-11 23:47:58,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:47:58,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:47:58,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:47:58,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:47:58,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,317 INFO L138 Inliner]: procedures = 170, calls = 25, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 114 [2024-10-11 23:47:58,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:47:58,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:47:58,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:47:58,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:47:58,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,345 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 1 writes are split as follows [0, 1]. [2024-10-11 23:47:58,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:47:58,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:47:58,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:47:58,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:47:58,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (1/1) ... [2024-10-11 23:47:58,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:47:58,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:58,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:47:58,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:47:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:47:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:47:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 23:47:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 23:47:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:47:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:47:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:47:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:47:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:47:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:47:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:47:58,455 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:47:58,545 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:47:58,546 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:47:58,707 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:47:58,707 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:47:58,807 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:47:58,807 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 23:47:58,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:47:58 BoogieIcfgContainer [2024-10-11 23:47:58,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:47:58,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:47:58,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:47:58,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:47:58,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:47:57" (1/3) ... [2024-10-11 23:47:58,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615a2aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:47:58, skipping insertion in model container [2024-10-11 23:47:58,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:58" (2/3) ... [2024-10-11 23:47:58,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615a2aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:47:58, skipping insertion in model container [2024-10-11 23:47:58,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:47:58" (3/3) ... [2024-10-11 23:47:58,816 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2024-10-11 23:47:58,829 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:47:58,830 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-11 23:47:58,830 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:47:58,871 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:47:58,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 35 transitions, 74 flow [2024-10-11 23:47:58,930 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2024-10-11 23:47:58,930 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:47:58,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 5/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-11 23:47:58,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 35 transitions, 74 flow [2024-10-11 23:47:58,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 35 transitions, 74 flow [2024-10-11 23:47:58,948 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:47:58,957 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;@17d88628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:47:58,957 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-11 23:47:58,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:47:58,963 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:47:58,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:47:58,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:58,965 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:47:58,965 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:58,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:58,969 INFO L85 PathProgramCache]: Analyzing trace with hash 383607, now seen corresponding path program 1 times [2024-10-11 23:47:58,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:58,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659779834] [2024-10-11 23:47:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:58,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:59,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:59,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659779834] [2024-10-11 23:47:59,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659779834] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:59,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:59,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:59,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745989821] [2024-10-11 23:47:59,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:59,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:59,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:59,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:59,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:59,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-11 23:47:59,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-10-11 23:47:59,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:59,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-11 23:47:59,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:59,441 INFO L124 PetriNetUnfolderBase]: 23/87 cut-off events. [2024-10-11 23:47:59,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:47:59,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 87 events. 23/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 233 event pairs, 18 based on Foata normal form. 8/81 useless extension candidates. Maximal degree in co-relation 121. Up to 59 conditions per place. [2024-10-11 23:47:59,445 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 18 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2024-10-11 23:47:59,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 114 flow [2024-10-11 23:47:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-10-11 23:47:59,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2024-10-11 23:47:59,457 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 74 flow. Second operand 4 states and 79 transitions. [2024-10-11 23:47:59,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 114 flow [2024-10-11 23:47:59,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:47:59,462 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 92 flow [2024-10-11 23:47:59,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-10-11 23:47:59,467 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-10-11 23:47:59,467 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 92 flow [2024-10-11 23:47:59,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-10-11 23:47:59,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:59,468 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 23:47:59,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:47:59,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:59,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:59,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1456507130, now seen corresponding path program 1 times [2024-10-11 23:47:59,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:59,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483301207] [2024-10-11 23:47:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:59,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:59,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:59,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483301207] [2024-10-11 23:47:59,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483301207] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:59,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547549599] [2024-10-11 23:47:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:59,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:59,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:59,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:59,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:47:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:59,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:47:59,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:59,637 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:59,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547549599] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:59,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:59,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:47:59,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931165073] [2024-10-11 23:47:59,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:59,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:47:59,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:59,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:47:59,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:47:59,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-11 23:47:59,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:59,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:59,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-11 23:47:59,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:59,712 INFO L124 PetriNetUnfolderBase]: 23/86 cut-off events. [2024-10-11 23:47:59,712 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:47:59,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 86 events. 23/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 18 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 144. Up to 54 conditions per place. [2024-10-11 23:47:59,714 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 14 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2024-10-11 23:47:59,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 128 flow [2024-10-11 23:47:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:47:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:47:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-10-11 23:47:59,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-10-11 23:47:59,715 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 92 flow. Second operand 6 states and 99 transitions. [2024-10-11 23:47:59,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 128 flow [2024-10-11 23:47:59,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:47:59,717 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 98 flow [2024-10-11 23:47:59,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-10-11 23:47:59,718 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-10-11 23:47:59,718 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 98 flow [2024-10-11 23:47:59,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:59,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:59,718 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:47:59,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:47:59,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:59,920 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:59,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:59,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2092919587, now seen corresponding path program 1 times [2024-10-11 23:47:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:59,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597460374] [2024-10-11 23:47:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:59,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:47:59,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:59,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597460374] [2024-10-11 23:47:59,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597460374] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:59,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:59,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:59,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111206592] [2024-10-11 23:47:59,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:59,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:59,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:59,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:59,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-11 23:47:59,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-10-11 23:47:59,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:59,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-11 23:47:59,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:59,993 INFO L124 PetriNetUnfolderBase]: 23/85 cut-off events. [2024-10-11 23:47:59,993 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 23:47:59,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 85 events. 23/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 232 event pairs, 18 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 140. Up to 57 conditions per place. [2024-10-11 23:47:59,994 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 15 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-10-11 23:47:59,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 132 flow [2024-10-11 23:47:59,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-11 23:47:59,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-10-11 23:47:59,996 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 98 flow. Second operand 3 states and 57 transitions. [2024-10-11 23:47:59,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 132 flow [2024-10-11 23:47:59,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 110 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 23:47:59,997 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 80 flow [2024-10-11 23:47:59,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-10-11 23:47:59,998 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-10-11 23:47:59,998 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 80 flow [2024-10-11 23:47:59,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-10-11 23:47:59,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:59,998 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:59,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:47:59,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:59,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:59,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1251210166, now seen corresponding path program 1 times [2024-10-11 23:47:59,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:59,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042724543] [2024-10-11 23:47:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:59,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:00,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:00,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042724543] [2024-10-11 23:48:00,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042724543] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:00,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186375633] [2024-10-11 23:48:00,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:00,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:00,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:00,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:00,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:48:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:00,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:48:00,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:00,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:48:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:00,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186375633] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:48:00,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:48:00,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:48:00,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162887959] [2024-10-11 23:48:00,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:48:00,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:48:00,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:00,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:48:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:48:00,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-11 23:48:00,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 80 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:00,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:00,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-11 23:48:00,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:00,230 INFO L124 PetriNetUnfolderBase]: 23/89 cut-off events. [2024-10-11 23:48:00,230 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-11 23:48:00,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 89 events. 23/89 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 230 event pairs, 18 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 133. Up to 55 conditions per place. [2024-10-11 23:48:00,231 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 15 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2024-10-11 23:48:00,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 139 flow [2024-10-11 23:48:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:48:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:48:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-10-11 23:48:00,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-10-11 23:48:00,233 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 80 flow. Second operand 7 states and 115 transitions. [2024-10-11 23:48:00,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 139 flow [2024-10-11 23:48:00,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 125 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:00,234 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 106 flow [2024-10-11 23:48:00,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-10-11 23:48:00,234 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-10-11 23:48:00,235 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 106 flow [2024-10-11 23:48:00,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:00,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:00,235 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:00,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:48:00,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:00,436 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:48:00,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:00,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1419754838, now seen corresponding path program 2 times [2024-10-11 23:48:00,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:00,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058769263] [2024-10-11 23:48:00,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:00,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:48:00,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:00,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058769263] [2024-10-11 23:48:00,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058769263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:00,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:00,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:00,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823219506] [2024-10-11 23:48:00,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:00,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:00,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:00,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:00,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:00,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-11 23:48:00,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-10-11 23:48:00,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:00,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-11 23:48:00,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:00,531 INFO L124 PetriNetUnfolderBase]: 27/98 cut-off events. [2024-10-11 23:48:00,531 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 23:48:00,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 98 events. 27/98 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 241 event pairs, 2 based on Foata normal form. 3/95 useless extension candidates. Maximal degree in co-relation 149. Up to 48 conditions per place. [2024-10-11 23:48:00,532 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 23 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-10-11 23:48:00,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 158 flow [2024-10-11 23:48:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-10-11 23:48:00,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-11 23:48:00,533 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 106 flow. Second operand 3 states and 60 transitions. [2024-10-11 23:48:00,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 158 flow [2024-10-11 23:48:00,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:00,536 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 104 flow [2024-10-11 23:48:00,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-10-11 23:48:00,537 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-10-11 23:48:00,537 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 104 flow [2024-10-11 23:48:00,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-10-11 23:48:00,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:00,537 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-11 23:48:00,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:48:00,537 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:48:00,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:00,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1062718689, now seen corresponding path program 1 times [2024-10-11 23:48:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:00,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487433137] [2024-10-11 23:48:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:00,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:48:00,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487433137] [2024-10-11 23:48:00,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487433137] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588869161] [2024-10-11 23:48:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:00,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:00,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:00,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:00,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:48:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:00,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:48:00,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:48:00,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:48:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:48:00,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588869161] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:48:00,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:48:00,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-11 23:48:00,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6155843] [2024-10-11 23:48:00,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:48:00,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 23:48:00,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 23:48:00,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 23:48:00,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-11 23:48:00,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 104 flow. Second operand has 15 states, 15 states have (on average 14.333333333333334) internal successors, (215), 15 states have internal predecessors, (215), 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) [2024-10-11 23:48:00,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:00,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-11 23:48:00,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:00,895 INFO L124 PetriNetUnfolderBase]: 23/97 cut-off events. [2024-10-11 23:48:00,896 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-11 23:48:00,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 97 events. 23/97 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 220 event pairs, 18 based on Foata normal form. 3/89 useless extension candidates. Maximal degree in co-relation 140. Up to 55 conditions per place. [2024-10-11 23:48:00,898 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 15 selfloop transitions, 13 changer transitions 0/40 dead transitions. [2024-10-11 23:48:00,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 196 flow [2024-10-11 23:48:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 23:48:00,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 23:48:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2024-10-11 23:48:00,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43956043956043955 [2024-10-11 23:48:00,899 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 104 flow. Second operand 13 states and 200 transitions. [2024-10-11 23:48:00,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 196 flow [2024-10-11 23:48:00,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:00,900 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 177 flow [2024-10-11 23:48:00,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=177, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-10-11 23:48:00,901 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2024-10-11 23:48:00,901 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 177 flow [2024-10-11 23:48:00,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.333333333333334) internal successors, (215), 15 states have internal predecessors, (215), 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) [2024-10-11 23:48:00,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:00,901 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1] [2024-10-11 23:48:00,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 23:48:01,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:01,108 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:48:01,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:01,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1440509358, now seen corresponding path program 2 times [2024-10-11 23:48:01,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:01,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977505466] [2024-10-11 23:48:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:01,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:48:01,130 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:48:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:48:01,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:48:01,164 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:48:01,165 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-10-11 23:48:01,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-10-11 23:48:01,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-10-11 23:48:01,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-10-11 23:48:01,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-10-11 23:48:01,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-10-11 23:48:01,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-10-11 23:48:01,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-10-11 23:48:01,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-10-11 23:48:01,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-10-11 23:48:01,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-10-11 23:48:01,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:48:01,168 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-11 23:48:01,170 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:48:01,170 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 23:48:01,193 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:48:01,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 59 transitions, 128 flow [2024-10-11 23:48:01,200 INFO L124 PetriNetUnfolderBase]: 9/64 cut-off events. [2024-10-11 23:48:01,202 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:48:01,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 64 events. 9/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 176 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 3 conditions per place. [2024-10-11 23:48:01,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 59 transitions, 128 flow [2024-10-11 23:48:01,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 59 transitions, 128 flow [2024-10-11 23:48:01,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:48:01,205 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;@17d88628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:48:01,205 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-11 23:48:01,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:48:01,207 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:48:01,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:48:01,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:01,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:48:01,209 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:48:01,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:01,209 INFO L85 PathProgramCache]: Analyzing trace with hash 442194, now seen corresponding path program 1 times [2024-10-11 23:48:01,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:01,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568988824] [2024-10-11 23:48:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:01,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:01,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:01,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568988824] [2024-10-11 23:48:01,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568988824] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:01,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:01,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:01,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428455766] [2024-10-11 23:48:01,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:01,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:48:01,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:01,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:48:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:48:01,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-11 23:48:01,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-10-11 23:48:01,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:01,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-11 23:48:01,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:01,368 INFO L124 PetriNetUnfolderBase]: 547/1164 cut-off events. [2024-10-11 23:48:01,369 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-10-11 23:48:01,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 1164 events. 547/1164 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6762 event pairs, 468 based on Foata normal form. 162/1182 useless extension candidates. Maximal degree in co-relation 1005. Up to 869 conditions per place. [2024-10-11 23:48:01,379 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 29 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-10-11 23:48:01,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 186 flow [2024-10-11 23:48:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:48:01,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:48:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-10-11 23:48:01,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-10-11 23:48:01,381 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 128 flow. Second operand 4 states and 136 transitions. [2024-10-11 23:48:01,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 186 flow [2024-10-11 23:48:01,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:48:01,383 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 142 flow [2024-10-11 23:48:01,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-10-11 23:48:01,384 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-10-11 23:48:01,384 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 142 flow [2024-10-11 23:48:01,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-10-11 23:48:01,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:01,385 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 23:48:01,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:48:01,385 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:48:01,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:01,385 INFO L85 PathProgramCache]: Analyzing trace with hash 288916774, now seen corresponding path program 1 times [2024-10-11 23:48:01,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:01,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225335431] [2024-10-11 23:48:01,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:01,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:01,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:01,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225335431] [2024-10-11 23:48:01,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225335431] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:01,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30299358] [2024-10-11 23:48:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:01,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:01,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:01,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:01,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:48:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:01,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:48:01,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:01,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:48:01,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30299358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:01,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:48:01,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:48:01,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105320344] [2024-10-11 23:48:01,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:01,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:48:01,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:01,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:48:01,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:48:01,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-11 23:48:01,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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) [2024-10-11 23:48:01,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:01,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-11 23:48:01,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:01,665 INFO L124 PetriNetUnfolderBase]: 547/1163 cut-off events. [2024-10-11 23:48:01,665 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-11 23:48:01,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 1163 events. 547/1163 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6751 event pairs, 468 based on Foata normal form. 1/1020 useless extension candidates. Maximal degree in co-relation 2061. Up to 864 conditions per place. [2024-10-11 23:48:01,673 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 25 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2024-10-11 23:48:01,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 200 flow [2024-10-11 23:48:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:48:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:48:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-10-11 23:48:01,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4971751412429379 [2024-10-11 23:48:01,674 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 142 flow. Second operand 6 states and 176 transitions. [2024-10-11 23:48:01,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 200 flow [2024-10-11 23:48:01,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:48:01,677 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 148 flow [2024-10-11 23:48:01,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-10-11 23:48:01,678 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-10-11 23:48:01,679 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 148 flow [2024-10-11 23:48:01,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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) [2024-10-11 23:48:01,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:01,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:48:01,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 23:48:01,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 23:48:01,881 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:48:01,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:01,882 INFO L85 PathProgramCache]: Analyzing trace with hash 366485822, now seen corresponding path program 1 times [2024-10-11 23:48:01,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:01,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420924790] [2024-10-11 23:48:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:48:01,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:01,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420924790] [2024-10-11 23:48:01,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420924790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:01,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:01,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:01,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484052008] [2024-10-11 23:48:01,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:01,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:01,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:01,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:01,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:01,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-11 23:48:01,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-10-11 23:48:01,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:01,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-11 23:48:01,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:02,027 INFO L124 PetriNetUnfolderBase]: 547/1162 cut-off events. [2024-10-11 23:48:02,028 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-11 23:48:02,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 1162 events. 547/1162 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6766 event pairs, 468 based on Foata normal form. 1/1020 useless extension candidates. Maximal degree in co-relation 2057. Up to 867 conditions per place. [2024-10-11 23:48:02,034 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 26 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2024-10-11 23:48:02,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 54 transitions, 204 flow [2024-10-11 23:48:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:02,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-11 23:48:02,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5706214689265536 [2024-10-11 23:48:02,035 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 148 flow. Second operand 3 states and 101 transitions. [2024-10-11 23:48:02,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 54 transitions, 204 flow [2024-10-11 23:48:02,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 182 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 23:48:02,037 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 130 flow [2024-10-11 23:48:02,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-10-11 23:48:02,038 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-10-11 23:48:02,039 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 130 flow [2024-10-11 23:48:02,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-10-11 23:48:02,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:02,039 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:02,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:48:02,039 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:48:02,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:02,040 INFO L85 PathProgramCache]: Analyzing trace with hash 5762984, now seen corresponding path program 1 times [2024-10-11 23:48:02,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:02,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617301823] [2024-10-11 23:48:02,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:02,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:02,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:02,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617301823] [2024-10-11 23:48:02,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617301823] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:02,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611058772] [2024-10-11 23:48:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:02,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:02,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:02,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:02,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:48:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:02,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:48:02,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:02,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:48:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611058772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:48:02,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:48:02,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:48:02,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312193308] [2024-10-11 23:48:02,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:48:02,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:48:02,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:02,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:48:02,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:48:02,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-11 23:48:02,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 130 flow. Second operand has 10 states, 10 states have (on average 25.4) internal successors, (254), 10 states have internal predecessors, (254), 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) [2024-10-11 23:48:02,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:02,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-11 23:48:02,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:02,356 INFO L124 PetriNetUnfolderBase]: 547/1166 cut-off events. [2024-10-11 23:48:02,357 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-11 23:48:02,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2085 conditions, 1166 events. 547/1166 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6744 event pairs, 468 based on Foata normal form. 2/1026 useless extension candidates. Maximal degree in co-relation 2050. Up to 865 conditions per place. [2024-10-11 23:48:02,363 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 26 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-10-11 23:48:02,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 211 flow [2024-10-11 23:48:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:48:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:48:02,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-10-11 23:48:02,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4915254237288136 [2024-10-11 23:48:02,364 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 130 flow. Second operand 7 states and 203 transitions. [2024-10-11 23:48:02,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 211 flow [2024-10-11 23:48:02,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:02,367 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 156 flow [2024-10-11 23:48:02,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-10-11 23:48:02,367 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-10-11 23:48:02,368 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 156 flow [2024-10-11 23:48:02,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.4) internal successors, (254), 10 states have internal predecessors, (254), 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) [2024-10-11 23:48:02,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:02,368 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:02,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 23:48:02,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 23:48:02,573 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:48:02,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:02,574 INFO L85 PathProgramCache]: Analyzing trace with hash 702058280, now seen corresponding path program 2 times [2024-10-11 23:48:02,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:02,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688459456] [2024-10-11 23:48:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:02,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:48:02,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:02,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688459456] [2024-10-11 23:48:02,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688459456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:02,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:02,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:02,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131117143] [2024-10-11 23:48:02,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:02,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:02,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:02,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-11 23:48:02,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-11 23:48:02,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:02,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-11 23:48:02,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:02,761 INFO L124 PetriNetUnfolderBase]: 615/1271 cut-off events. [2024-10-11 23:48:02,761 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-11 23:48:02,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1271 events. 615/1271 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7238 event pairs, 236 based on Foata normal form. 33/1196 useless extension candidates. Maximal degree in co-relation 2246. Up to 807 conditions per place. [2024-10-11 23:48:02,766 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 45 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-10-11 23:48:02,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 279 flow [2024-10-11 23:48:02,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:02,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-10-11 23:48:02,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6497175141242938 [2024-10-11 23:48:02,768 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 156 flow. Second operand 3 states and 115 transitions. [2024-10-11 23:48:02,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 279 flow [2024-10-11 23:48:02,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:02,770 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 154 flow [2024-10-11 23:48:02,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-10-11 23:48:02,771 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-10-11 23:48:02,771 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 154 flow [2024-10-11 23:48:02,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-11 23:48:02,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:02,772 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:02,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 23:48:02,772 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:48:02,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:02,772 INFO L85 PathProgramCache]: Analyzing trace with hash 288970677, now seen corresponding path program 1 times [2024-10-11 23:48:02,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:02,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976749306] [2024-10-11 23:48:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:02,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:48:02,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:02,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976749306] [2024-10-11 23:48:02,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976749306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:02,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:02,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:02,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433925926] [2024-10-11 23:48:02,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:02,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:02,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:02,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:02,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:02,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-11 23:48:02,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-11 23:48:02,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:02,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-11 23:48:02,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:02,929 INFO L124 PetriNetUnfolderBase]: 559/1167 cut-off events. [2024-10-11 23:48:02,929 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-10-11 23:48:02,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2158 conditions, 1167 events. 559/1167 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6493 event pairs, 212 based on Foata normal form. 33/1101 useless extension candidates. Maximal degree in co-relation 2119. Up to 721 conditions per place. [2024-10-11 23:48:02,935 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 44 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-10-11 23:48:02,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 68 transitions, 275 flow [2024-10-11 23:48:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-11 23:48:02,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2024-10-11 23:48:02,936 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 154 flow. Second operand 3 states and 114 transitions. [2024-10-11 23:48:02,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 68 transitions, 275 flow [2024-10-11 23:48:02,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:02,939 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 152 flow [2024-10-11 23:48:02,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-10-11 23:48:02,940 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-10-11 23:48:02,940 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 152 flow [2024-10-11 23:48:02,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-11 23:48:02,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:02,941 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:02,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 23:48:02,941 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:48:02,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1502348283, now seen corresponding path program 1 times [2024-10-11 23:48:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716985637] [2024-10-11 23:48:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 23:48:02,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716985637] [2024-10-11 23:48:02,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716985637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:02,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:02,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:02,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355545224] [2024-10-11 23:48:02,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:02,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:02,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:02,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:02,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-11 23:48:02,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-10-11 23:48:02,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:02,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-11 23:48:02,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:03,128 INFO L124 PetriNetUnfolderBase]: 613/1277 cut-off events. [2024-10-11 23:48:03,128 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-10-11 23:48:03,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1277 events. 613/1277 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7441 event pairs, 92 based on Foata normal form. 30/1224 useless extension candidates. Maximal degree in co-relation 2315. Up to 750 conditions per place. [2024-10-11 23:48:03,134 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-10-11 23:48:03,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 270 flow [2024-10-11 23:48:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-11 23:48:03,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2024-10-11 23:48:03,136 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 152 flow. Second operand 3 states and 114 transitions. [2024-10-11 23:48:03,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 270 flow [2024-10-11 23:48:03,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:03,139 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 150 flow [2024-10-11 23:48:03,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-10-11 23:48:03,140 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-10-11 23:48:03,140 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 150 flow [2024-10-11 23:48:03,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-10-11 23:48:03,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:03,140 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-11 23:48:03,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 23:48:03,140 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:48:03,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash 671835236, now seen corresponding path program 1 times [2024-10-11 23:48:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451595956] [2024-10-11 23:48:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:03,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 23:48:03,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:03,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451595956] [2024-10-11 23:48:03,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451595956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:03,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597158645] [2024-10-11 23:48:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:03,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:03,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:03,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:03,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:48:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:03,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:48:03,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 23:48:03,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:48:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 23:48:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597158645] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:48:03,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:48:03,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-11 23:48:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80234147] [2024-10-11 23:48:03,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:48:03,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 23:48:03,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:03,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 23:48:03,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 23:48:03,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-11 23:48:03,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 150 flow. Second operand has 15 states, 15 states have (on average 25.4) internal successors, (381), 15 states have internal predecessors, (381), 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) [2024-10-11 23:48:03,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:03,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-11 23:48:03,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:03,593 INFO L124 PetriNetUnfolderBase]: 547/1157 cut-off events. [2024-10-11 23:48:03,593 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-10-11 23:48:03,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 1157 events. 547/1157 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6557 event pairs, 468 based on Foata normal form. 3/1036 useless extension candidates. Maximal degree in co-relation 2094. Up to 865 conditions per place. [2024-10-11 23:48:03,598 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 26 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2024-10-11 23:48:03,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 60 transitions, 264 flow [2024-10-11 23:48:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 23:48:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 23:48:03,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 354 transitions. [2024-10-11 23:48:03,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-10-11 23:48:03,600 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 150 flow. Second operand 13 states and 354 transitions. [2024-10-11 23:48:03,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 60 transitions, 264 flow [2024-10-11 23:48:03,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 60 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:03,602 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 223 flow [2024-10-11 23:48:03,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=223, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2024-10-11 23:48:03,602 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-10-11 23:48:03,602 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 223 flow [2024-10-11 23:48:03,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.4) internal successors, (381), 15 states have internal predecessors, (381), 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) [2024-10-11 23:48:03,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:03,603 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1] [2024-10-11 23:48:03,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 23:48:03,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 23:48:03,808 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:48:03,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:03,808 INFO L85 PathProgramCache]: Analyzing trace with hash 828215992, now seen corresponding path program 2 times [2024-10-11 23:48:03,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:03,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345394623] [2024-10-11 23:48:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:03,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:48:03,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:48:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:48:03,848 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:48:03,848 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:48:03,848 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-11 23:48:03,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-10-11 23:48:03,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-10-11 23:48:03,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 23:48:03,849 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:48:03,850 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:48:03,850 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 23:48:03,874 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:48:03,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 83 transitions, 184 flow [2024-10-11 23:48:03,881 INFO L124 PetriNetUnfolderBase]: 13/91 cut-off events. [2024-10-11 23:48:03,881 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 23:48:03,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 13/91 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 72. Up to 4 conditions per place. [2024-10-11 23:48:03,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 83 transitions, 184 flow [2024-10-11 23:48:03,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 83 transitions, 184 flow [2024-10-11 23:48:03,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:48:03,883 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;@17d88628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:48:03,883 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-11 23:48:03,884 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:48:03,884 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:48:03,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:48:03,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:03,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:48:03,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:03,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:03,885 INFO L85 PathProgramCache]: Analyzing trace with hash 524613, now seen corresponding path program 1 times [2024-10-11 23:48:03,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:03,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68372693] [2024-10-11 23:48:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:03,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:03,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:03,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68372693] [2024-10-11 23:48:03,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68372693] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:03,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:03,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:03,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925457391] [2024-10-11 23:48:03,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:03,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:48:03,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:48:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:48:03,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:03,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-10-11 23:48:03,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:03,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:03,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:04,829 INFO L124 PetriNetUnfolderBase]: 8719/14461 cut-off events. [2024-10-11 23:48:04,830 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2024-10-11 23:48:04,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26868 conditions, 14461 events. 8719/14461 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 107059 event pairs, 7668 based on Foata normal form. 2654/15750 useless extension candidates. Maximal degree in co-relation 7725. Up to 11969 conditions per place. [2024-10-11 23:48:04,959 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 40 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-10-11 23:48:04,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 78 transitions, 260 flow [2024-10-11 23:48:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:48:04,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:48:04,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-10-11 23:48:04,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5813253012048193 [2024-10-11 23:48:04,960 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 184 flow. Second operand 4 states and 193 transitions. [2024-10-11 23:48:04,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 78 transitions, 260 flow [2024-10-11 23:48:04,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 258 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 23:48:04,962 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 192 flow [2024-10-11 23:48:04,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-10-11 23:48:04,962 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-11 23:48:04,962 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 192 flow [2024-10-11 23:48:04,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-10-11 23:48:04,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:04,963 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 23:48:04,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 23:48:04,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:04,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:04,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1550623674, now seen corresponding path program 1 times [2024-10-11 23:48:04,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:04,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756658608] [2024-10-11 23:48:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:04,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:05,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756658608] [2024-10-11 23:48:05,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756658608] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158951057] [2024-10-11 23:48:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:05,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:05,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:05,010 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:05,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:48:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:05,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:48:05,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:05,095 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:48:05,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158951057] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:05,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:48:05,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:48:05,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249137033] [2024-10-11 23:48:05,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:05,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:48:05,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:05,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:48:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:48:05,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:05,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 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) [2024-10-11 23:48:05,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:05,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:05,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:06,154 INFO L124 PetriNetUnfolderBase]: 8719/14460 cut-off events. [2024-10-11 23:48:06,154 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2024-10-11 23:48:06,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26778 conditions, 14460 events. 8719/14460 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 106941 event pairs, 7668 based on Foata normal form. 1/13096 useless extension candidates. Maximal degree in co-relation 26758. Up to 11964 conditions per place. [2024-10-11 23:48:06,295 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 36 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-10-11 23:48:06,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 272 flow [2024-10-11 23:48:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:48:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:48:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 253 transitions. [2024-10-11 23:48:06,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5080321285140562 [2024-10-11 23:48:06,297 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 192 flow. Second operand 6 states and 253 transitions. [2024-10-11 23:48:06,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 272 flow [2024-10-11 23:48:06,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 77 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:48:06,298 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 198 flow [2024-10-11 23:48:06,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-10-11 23:48:06,299 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-10-11 23:48:06,299 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 198 flow [2024-10-11 23:48:06,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 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) [2024-10-11 23:48:06,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:06,300 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:48:06,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 23:48:06,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 23:48:06,501 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:06,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:06,501 INFO L85 PathProgramCache]: Analyzing trace with hash -824693135, now seen corresponding path program 1 times [2024-10-11 23:48:06,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:06,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523986766] [2024-10-11 23:48:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:06,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:48:06,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:06,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523986766] [2024-10-11 23:48:06,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523986766] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:06,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:06,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:06,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325704744] [2024-10-11 23:48:06,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:06,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:06,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:06,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:06,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:06,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:06,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-10-11 23:48:06,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:06,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:06,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:07,724 INFO L124 PetriNetUnfolderBase]: 8719/14459 cut-off events. [2024-10-11 23:48:07,724 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-10-11 23:48:07,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26780 conditions, 14459 events. 8719/14459 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 107011 event pairs, 7668 based on Foata normal form. 1/13096 useless extension candidates. Maximal degree in co-relation 26754. Up to 11967 conditions per place. [2024-10-11 23:48:07,785 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 37 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-10-11 23:48:07,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 276 flow [2024-10-11 23:48:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:07,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:07,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-10-11 23:48:07,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5823293172690763 [2024-10-11 23:48:07,787 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 198 flow. Second operand 3 states and 145 transitions. [2024-10-11 23:48:07,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 276 flow [2024-10-11 23:48:07,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 254 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 23:48:07,789 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 180 flow [2024-10-11 23:48:07,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2024-10-11 23:48:07,789 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-10-11 23:48:07,789 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 180 flow [2024-10-11 23:48:07,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-10-11 23:48:07,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:07,790 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:07,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 23:48:07,790 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:07,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:07,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2039078098, now seen corresponding path program 1 times [2024-10-11 23:48:07,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:07,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117029316] [2024-10-11 23:48:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:07,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:07,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:07,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117029316] [2024-10-11 23:48:07,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117029316] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:07,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185511181] [2024-10-11 23:48:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:07,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:07,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:07,848 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:07,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 23:48:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:07,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:48:07,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:07,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:48:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:07,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185511181] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:48:07,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:48:07,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:48:07,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116388445] [2024-10-11 23:48:07,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:48:07,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:48:07,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:07,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:48:07,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:48:07,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:07,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 180 flow. Second operand has 10 states, 10 states have (on average 36.4) internal successors, (364), 10 states have internal predecessors, (364), 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) [2024-10-11 23:48:07,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:07,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:07,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:08,970 INFO L124 PetriNetUnfolderBase]: 8719/14463 cut-off events. [2024-10-11 23:48:08,970 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-10-11 23:48:09,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26783 conditions, 14463 events. 8719/14463 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 107081 event pairs, 7668 based on Foata normal form. 2/13102 useless extension candidates. Maximal degree in co-relation 26747. Up to 11965 conditions per place. [2024-10-11 23:48:09,114 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 37 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2024-10-11 23:48:09,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 283 flow [2024-10-11 23:48:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:48:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:48:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 291 transitions. [2024-10-11 23:48:09,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5008605851979346 [2024-10-11 23:48:09,116 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 180 flow. Second operand 7 states and 291 transitions. [2024-10-11 23:48:09,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 283 flow [2024-10-11 23:48:09,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 79 transitions, 269 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:09,118 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 206 flow [2024-10-11 23:48:09,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2024-10-11 23:48:09,122 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2024-10-11 23:48:09,123 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 206 flow [2024-10-11 23:48:09,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.4) internal successors, (364), 10 states have internal predecessors, (364), 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) [2024-10-11 23:48:09,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:09,123 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:09,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 23:48:09,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:09,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:09,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1293920562, now seen corresponding path program 2 times [2024-10-11 23:48:09,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743505450] [2024-10-11 23:48:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:48:09,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743505450] [2024-10-11 23:48:09,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743505450] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:09,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:09,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:09,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984108706] [2024-10-11 23:48:09,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:09,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:09,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:09,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:09,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:09,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:09,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:09,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:09,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:09,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:10,698 INFO L124 PetriNetUnfolderBase]: 9858/16751 cut-off events. [2024-10-11 23:48:10,698 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2024-10-11 23:48:10,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30307 conditions, 16751 events. 9858/16751 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 132125 event pairs, 1268 based on Foata normal form. 333/16100 useless extension candidates. Maximal degree in co-relation 30266. Up to 11097 conditions per place. [2024-10-11 23:48:10,783 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 67 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-10-11 23:48:10,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 102 transitions, 400 flow [2024-10-11 23:48:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2024-10-11 23:48:10,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6827309236947792 [2024-10-11 23:48:10,786 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 206 flow. Second operand 3 states and 170 transitions. [2024-10-11 23:48:10,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 102 transitions, 400 flow [2024-10-11 23:48:10,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 102 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:10,788 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 204 flow [2024-10-11 23:48:10,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-10-11 23:48:10,788 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-10-11 23:48:10,788 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 204 flow [2024-10-11 23:48:10,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:10,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:10,789 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:10,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 23:48:10,789 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:10,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1456832318, now seen corresponding path program 1 times [2024-10-11 23:48:10,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:10,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063848252] [2024-10-11 23:48:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:10,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:48:10,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063848252] [2024-10-11 23:48:10,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063848252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:10,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849437076] [2024-10-11 23:48:10,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:10,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:10,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:10,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:10,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:10,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:10,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:10,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:11,703 INFO L124 PetriNetUnfolderBase]: 8995/15555 cut-off events. [2024-10-11 23:48:11,703 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-10-11 23:48:11,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28547 conditions, 15555 events. 8995/15555 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 123192 event pairs, 1268 based on Foata normal form. 333/14919 useless extension candidates. Maximal degree in co-relation 28507. Up to 9901 conditions per place. [2024-10-11 23:48:11,773 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 66 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-10-11 23:48:11,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 396 flow [2024-10-11 23:48:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-10-11 23:48:11,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.678714859437751 [2024-10-11 23:48:11,774 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 204 flow. Second operand 3 states and 169 transitions. [2024-10-11 23:48:11,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 396 flow [2024-10-11 23:48:11,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 101 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:11,777 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 202 flow [2024-10-11 23:48:11,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-10-11 23:48:11,777 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-10-11 23:48:11,777 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 202 flow [2024-10-11 23:48:11,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:11,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:11,778 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:11,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 23:48:11,778 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:11,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:11,778 INFO L85 PathProgramCache]: Analyzing trace with hash -173749307, now seen corresponding path program 1 times [2024-10-11 23:48:11,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:11,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425920002] [2024-10-11 23:48:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:11,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:48:11,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:11,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425920002] [2024-10-11 23:48:11,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425920002] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:11,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905477594] [2024-10-11 23:48:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:11,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:11,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:11,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:11,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 23:48:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:11,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:48:11,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:48:11,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:48:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:48:12,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905477594] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:48:12,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:48:12,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-11 23:48:12,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317700099] [2024-10-11 23:48:12,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:48:12,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 23:48:12,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:12,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 23:48:12,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 23:48:12,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:12,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 202 flow. Second operand has 15 states, 15 states have (on average 36.46666666666667) internal successors, (547), 15 states have internal predecessors, (547), 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) [2024-10-11 23:48:12,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:12,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:12,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:12,816 INFO L124 PetriNetUnfolderBase]: 8719/14466 cut-off events. [2024-10-11 23:48:12,816 INFO L125 PetriNetUnfolderBase]: For 988/988 co-relation queries the response was YES. [2024-10-11 23:48:12,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27476 conditions, 14466 events. 8719/14466 cut-off events. For 988/988 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 107084 event pairs, 7668 based on Foata normal form. 3/13112 useless extension candidates. Maximal degree in co-relation 27409. Up to 11965 conditions per place. [2024-10-11 23:48:12,905 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 37 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2024-10-11 23:48:12,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 83 transitions, 338 flow [2024-10-11 23:48:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 23:48:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 23:48:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 508 transitions. [2024-10-11 23:48:12,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47080630213160335 [2024-10-11 23:48:12,907 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 202 flow. Second operand 13 states and 508 transitions. [2024-10-11 23:48:12,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 83 transitions, 338 flow [2024-10-11 23:48:12,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 83 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:12,917 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 275 flow [2024-10-11 23:48:12,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=275, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2024-10-11 23:48:12,917 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2024-10-11 23:48:12,917 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 275 flow [2024-10-11 23:48:12,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 36.46666666666667) internal successors, (547), 15 states have internal predecessors, (547), 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) [2024-10-11 23:48:12,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:12,918 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:12,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 23:48:13,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:13,119 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:13,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:13,119 INFO L85 PathProgramCache]: Analyzing trace with hash 479210244, now seen corresponding path program 2 times [2024-10-11 23:48:13,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:13,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919540255] [2024-10-11 23:48:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:13,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-11 23:48:13,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:13,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919540255] [2024-10-11 23:48:13,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919540255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:13,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:13,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101926034] [2024-10-11 23:48:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:13,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:13,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:13,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:13,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-10-11 23:48:13,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:13,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:13,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:14,396 INFO L124 PetriNetUnfolderBase]: 9783/16228 cut-off events. [2024-10-11 23:48:14,397 INFO L125 PetriNetUnfolderBase]: For 435/435 co-relation queries the response was YES. [2024-10-11 23:48:14,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29815 conditions, 16228 events. 9783/16228 cut-off events. For 435/435 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 121146 event pairs, 2972 based on Foata normal form. 330/15455 useless extension candidates. Maximal degree in co-relation 29728. Up to 11040 conditions per place. [2024-10-11 23:48:14,540 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 72 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2024-10-11 23:48:14,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 105 transitions, 472 flow [2024-10-11 23:48:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-10-11 23:48:14,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.678714859437751 [2024-10-11 23:48:14,543 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 275 flow. Second operand 3 states and 169 transitions. [2024-10-11 23:48:14,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 105 transitions, 472 flow [2024-10-11 23:48:14,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 105 transitions, 462 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 23:48:14,546 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 267 flow [2024-10-11 23:48:14,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2024-10-11 23:48:14,548 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 16 predicate places. [2024-10-11 23:48:14,548 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 267 flow [2024-10-11 23:48:14,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-10-11 23:48:14,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:14,548 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:14,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 23:48:14,548 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:14,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:14,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1970616259, now seen corresponding path program 1 times [2024-10-11 23:48:14,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:14,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450179210] [2024-10-11 23:48:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:14,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-11 23:48:14,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:14,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450179210] [2024-10-11 23:48:14,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450179210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:14,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:14,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:14,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371782605] [2024-10-11 23:48:14,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:14,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:14,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:14,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:14,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:14,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:14,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-10-11 23:48:14,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:14,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:14,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:15,811 INFO L124 PetriNetUnfolderBase]: 8893/14858 cut-off events. [2024-10-11 23:48:15,812 INFO L125 PetriNetUnfolderBase]: For 904/904 co-relation queries the response was YES. [2024-10-11 23:48:15,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27881 conditions, 14858 events. 8893/14858 cut-off events. For 904/904 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 109522 event pairs, 2732 based on Foata normal form. 330/14163 useless extension candidates. Maximal degree in co-relation 27798. Up to 9850 conditions per place. [2024-10-11 23:48:15,955 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 71 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-10-11 23:48:15,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 104 transitions, 462 flow [2024-10-11 23:48:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-10-11 23:48:15,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746987951807228 [2024-10-11 23:48:15,956 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 267 flow. Second operand 3 states and 168 transitions. [2024-10-11 23:48:15,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 104 transitions, 462 flow [2024-10-11 23:48:15,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 104 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:15,961 INFO L231 Difference]: Finished difference. Result has 92 places, 81 transitions, 265 flow [2024-10-11 23:48:15,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2024-10-11 23:48:15,961 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2024-10-11 23:48:15,961 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 265 flow [2024-10-11 23:48:15,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-10-11 23:48:15,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:15,962 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:15,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 23:48:15,962 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:15,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:15,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1385471782, now seen corresponding path program 1 times [2024-10-11 23:48:15,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:15,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395712591] [2024-10-11 23:48:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:15,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-11 23:48:16,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:16,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395712591] [2024-10-11 23:48:16,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395712591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:16,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:16,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:48:16,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863009292] [2024-10-11 23:48:16,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:16,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:48:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:16,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:48:16,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:48:16,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:16,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:16,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:16,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:16,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:17,382 INFO L124 PetriNetUnfolderBase]: 9669/15647 cut-off events. [2024-10-11 23:48:17,383 INFO L125 PetriNetUnfolderBase]: For 991/991 co-relation queries the response was YES. [2024-10-11 23:48:17,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29965 conditions, 15647 events. 9669/15647 cut-off events. For 991/991 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 113731 event pairs, 4088 based on Foata normal form. 333/14792 useless extension candidates. Maximal degree in co-relation 29882. Up to 8705 conditions per place. [2024-10-11 23:48:17,531 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 95 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-10-11 23:48:17,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 128 transitions, 585 flow [2024-10-11 23:48:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:48:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:48:17,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2024-10-11 23:48:17,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6897590361445783 [2024-10-11 23:48:17,533 INFO L175 Difference]: Start difference. First operand has 92 places, 81 transitions, 265 flow. Second operand 4 states and 229 transitions. [2024-10-11 23:48:17,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 128 transitions, 585 flow [2024-10-11 23:48:17,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 128 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:17,545 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 267 flow [2024-10-11 23:48:17,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-10-11 23:48:17,546 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2024-10-11 23:48:17,546 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 267 flow [2024-10-11 23:48:17,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:17,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:17,546 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:17,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 23:48:17,547 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:17,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:17,547 INFO L85 PathProgramCache]: Analyzing trace with hash 48293, now seen corresponding path program 1 times [2024-10-11 23:48:17,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:17,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928697439] [2024-10-11 23:48:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:17,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-11 23:48:17,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:17,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928697439] [2024-10-11 23:48:17,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928697439] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:17,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:17,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:48:17,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619186969] [2024-10-11 23:48:17,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:17,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:48:17,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:17,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:48:17,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:48:17,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:17,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:17,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:17,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:17,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:19,968 INFO L124 PetriNetUnfolderBase]: 17143/27840 cut-off events. [2024-10-11 23:48:19,969 INFO L125 PetriNetUnfolderBase]: For 2081/2081 co-relation queries the response was YES. [2024-10-11 23:48:20,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53928 conditions, 27840 events. 17143/27840 cut-off events. For 2081/2081 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 219840 event pairs, 8468 based on Foata normal form. 333/26542 useless extension candidates. Maximal degree in co-relation 53845. Up to 13507 conditions per place. [2024-10-11 23:48:20,258 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 104 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2024-10-11 23:48:20,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 137 transitions, 623 flow [2024-10-11 23:48:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:48:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:48:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2024-10-11 23:48:20,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7168674698795181 [2024-10-11 23:48:20,260 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 267 flow. Second operand 4 states and 238 transitions. [2024-10-11 23:48:20,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 137 transitions, 623 flow [2024-10-11 23:48:20,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 137 transitions, 609 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:48:20,305 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 286 flow [2024-10-11 23:48:20,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2024-10-11 23:48:20,306 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2024-10-11 23:48:20,306 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 286 flow [2024-10-11 23:48:20,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:20,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:20,306 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:20,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-11 23:48:20,307 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:20,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash -370569836, now seen corresponding path program 1 times [2024-10-11 23:48:20,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:20,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821475018] [2024-10-11 23:48:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:20,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 23:48:20,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:20,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821475018] [2024-10-11 23:48:20,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821475018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:20,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:20,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:20,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040115943] [2024-10-11 23:48:20,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:20,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:20,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:20,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:20,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-11 23:48:20,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2024-10-11 23:48:20,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:20,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-11 23:48:20,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:22,387 INFO L124 PetriNetUnfolderBase]: 17909/29893 cut-off events. [2024-10-11 23:48:22,387 INFO L125 PetriNetUnfolderBase]: For 4602/4845 co-relation queries the response was YES. [2024-10-11 23:48:22,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58147 conditions, 29893 events. 17909/29893 cut-off events. For 4602/4845 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 246309 event pairs, 3220 based on Foata normal form. 540/28854 useless extension candidates. Maximal degree in co-relation 58062. Up to 18630 conditions per place. [2024-10-11 23:48:22,689 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 77 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-10-11 23:48:22,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 107 transitions, 511 flow [2024-10-11 23:48:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-10-11 23:48:22,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746987951807228 [2024-10-11 23:48:22,691 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 286 flow. Second operand 3 states and 168 transitions. [2024-10-11 23:48:22,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 107 transitions, 511 flow [2024-10-11 23:48:22,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 107 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:48:22,695 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 285 flow [2024-10-11 23:48:22,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2024-10-11 23:48:22,696 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2024-10-11 23:48:22,696 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 285 flow [2024-10-11 23:48:22,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2024-10-11 23:48:22,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:22,696 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:22,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-11 23:48:22,697 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:22,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:22,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1397228831, now seen corresponding path program 1 times [2024-10-11 23:48:22,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:22,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319229529] [2024-10-11 23:48:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:22,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:48:22,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:48:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:48:22,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:48:22,720 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:48:22,720 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-10-11 23:48:22,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-10-11 23:48:22,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-10-11 23:48:22,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-10-11 23:48:22,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-10-11 23:48:22,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-10-11 23:48:22,722 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-10-11 23:48:22,722 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-10-11 23:48:22,722 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-10-11 23:48:22,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-11 23:48:22,722 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:22,723 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:48:22,723 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 23:48:22,751 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:48:22,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 107 transitions, 242 flow [2024-10-11 23:48:22,760 INFO L124 PetriNetUnfolderBase]: 17/118 cut-off events. [2024-10-11 23:48:22,760 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 23:48:22,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 118 events. 17/118 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 418 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2024-10-11 23:48:22,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 107 transitions, 242 flow [2024-10-11 23:48:22,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 107 transitions, 242 flow [2024-10-11 23:48:22,762 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:48:22,762 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;@17d88628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:48:22,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-11 23:48:22,763 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:48:22,763 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:48:22,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:48:22,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:22,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:48:22,764 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-11 23:48:22,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash 630864, now seen corresponding path program 1 times [2024-10-11 23:48:22,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:22,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906977461] [2024-10-11 23:48:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:22,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:22,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:22,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906977461] [2024-10-11 23:48:22,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906977461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:22,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:22,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:22,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483875073] [2024-10-11 23:48:22,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:22,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:48:22,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:22,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:48:22,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:48:22,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 107 [2024-10-11 23:48:22,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 107 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:22,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:22,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 107 [2024-10-11 23:48:22,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:34,454 INFO L124 PetriNetUnfolderBase]: 120367/176627 cut-off events. [2024-10-11 23:48:34,455 INFO L125 PetriNetUnfolderBase]: For 11616/11616 co-relation queries the response was YES. [2024-10-11 23:48:34,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335035 conditions, 176627 events. 120367/176627 cut-off events. For 11616/11616 co-relation queries the response was YES. Maximal size of possible extension queue 6162. Compared 1478256 event pairs, 106668 based on Foata normal form. 36570/199825 useless extension candidates. Maximal degree in co-relation 26958. Up to 152969 conditions per place. [2024-10-11 23:48:35,725 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 51 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-10-11 23:48:35,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 100 transitions, 336 flow [2024-10-11 23:48:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:48:35,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:48:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-10-11 23:48:35,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5841121495327103 [2024-10-11 23:48:35,727 INFO L175 Difference]: Start difference. First operand has 99 places, 107 transitions, 242 flow. Second operand 4 states and 250 transitions. [2024-10-11 23:48:35,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 100 transitions, 336 flow [2024-10-11 23:48:35,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 100 transitions, 330 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 23:48:35,733 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 242 flow [2024-10-11 23:48:35,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2024-10-11 23:48:35,735 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 4 predicate places. [2024-10-11 23:48:35,735 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 242 flow [2024-10-11 23:48:35,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:35,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:35,735 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 23:48:35,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-11 23:48:35,735 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-11 23:48:35,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1614806118, now seen corresponding path program 1 times [2024-10-11 23:48:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:35,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857148279] [2024-10-11 23:48:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:35,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857148279] [2024-10-11 23:48:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857148279] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779989015] [2024-10-11 23:48:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:35,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:35,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:35,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:35,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 23:48:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:35,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:48:35,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:35,881 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:48:35,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779989015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:35,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:48:35,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:48:35,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952544937] [2024-10-11 23:48:35,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:35,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:48:35,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:48:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:48:35,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 107 [2024-10-11 23:48:35,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 46.833333333333336) internal successors, (281), 6 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) [2024-10-11 23:48:35,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:35,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 107 [2024-10-11 23:48:35,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand