./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:33:05,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:33:05,538 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:33:05,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:33:05,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:33:05,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:33:05,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:33:05,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:33:05,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:33:05,567 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:33:05,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:33:05,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:33:05,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:33:05,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:33:05,570 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:33:05,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:33:05,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:33:05,572 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:33:05,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:33:05,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:33:05,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:33:05,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:33:05,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:33:05,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:33:05,574 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:33:05,574 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:33:05,575 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:33:05,575 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:33:05,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:33:05,575 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:33:05,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:33:05,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:33:05,576 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:33:05,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:33:05,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:33:05,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:33:05,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:33:05,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:33:05,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:33:05,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:33:05,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:33:05,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:33:05,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:33:05,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:33:05,578 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2024-10-24 23:33:05,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:33:05,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:33:05,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:33:05,797 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:33:05,798 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:33:05,798 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-10-24 23:33:06,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:33:07,197 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:33:07,197 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-10-24 23:33:07,215 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a779eb0a5/a55a176ce9eb4f5aa0ebd20fa831cd4d/FLAG0b2a91755 [2024-10-24 23:33:07,563 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a779eb0a5/a55a176ce9eb4f5aa0ebd20fa831cd4d [2024-10-24 23:33:07,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:33:07,566 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:33:07,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:33:07,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:33:07,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:33:07,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:33:07" (1/1) ... [2024-10-24 23:33:07,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@127e3a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:07, skipping insertion in model container [2024-10-24 23:33:07,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:33:07" (1/1) ... [2024-10-24 23:33:07,608 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:33:07,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:33:07,923 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:33:07,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:33:08,028 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:33:08,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08 WrapperNode [2024-10-24 23:33:08,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:33:08,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:33:08,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:33:08,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:33:08,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,076 INFO L138 Inliner]: procedures = 262, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2024-10-24 23:33:08,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:33:08,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:33:08,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:33:08,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:33:08,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,106 INFO L175 MemorySlicer]: Split 7 memory accesses to 1 slices as follows [7]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 4 writes are split as follows [4]. [2024-10-24 23:33:08,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:33:08,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:33:08,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:33:08,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:33:08,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (1/1) ... [2024-10-24 23:33:08,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:33:08,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:08,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:33:08,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:33:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 23:33:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:33:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:33:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 23:33:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:33:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 23:33:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 23:33:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:33:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:33:08,194 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:33:08,296 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:33:08,298 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:33:08,478 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:33:08,478 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:33:08,550 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:33:08,550 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 23:33:08,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:33:08 BoogieIcfgContainer [2024-10-24 23:33:08,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:33:08,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:33:08,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:33:08,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:33:08,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:33:07" (1/3) ... [2024-10-24 23:33:08,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5acfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:33:08, skipping insertion in model container [2024-10-24 23:33:08,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:08" (2/3) ... [2024-10-24 23:33:08,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5acfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:33:08, skipping insertion in model container [2024-10-24 23:33:08,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:33:08" (3/3) ... [2024-10-24 23:33:08,558 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2024-10-24 23:33:08,571 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:33:08,571 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-24 23:33:08,572 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:33:08,611 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 23:33:08,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 98 flow [2024-10-24 23:33:08,659 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-10-24 23:33:08,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:33:08,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 3/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-10-24 23:33:08,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 98 flow [2024-10-24 23:33:08,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 46 transitions, 95 flow [2024-10-24 23:33:08,671 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:33:08,676 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;@41c219a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:33:08,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-24 23:33:08,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:33:08,679 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:33:08,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:33:08,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:08,679 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:33:08,680 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:08,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:08,684 INFO L85 PathProgramCache]: Analyzing trace with hash 289263, now seen corresponding path program 1 times [2024-10-24 23:33:08,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:08,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418198543] [2024-10-24 23:33:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:08,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:08,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:08,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418198543] [2024-10-24 23:33:08,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418198543] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:08,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:08,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:33:08,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522409004] [2024-10-24 23:33:08,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:08,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:33:08,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:08,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:33:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:33:08,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:08,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:08,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:08,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:08,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:09,025 INFO L124 PetriNetUnfolderBase]: 128/382 cut-off events. [2024-10-24 23:33:09,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:33:09,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 382 events. 128/382 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2034 event pairs, 104 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 627. Up to 255 conditions per place. [2024-10-24 23:33:09,031 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 25 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-24 23:33:09,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 151 flow [2024-10-24 23:33:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:33:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:33:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-10-24 23:33:09,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-10-24 23:33:09,043 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 95 flow. Second operand 4 states and 98 transitions. [2024-10-24 23:33:09,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 151 flow [2024-10-24 23:33:09,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:09,048 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 100 flow [2024-10-24 23:33:09,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-24 23:33:09,051 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2024-10-24 23:33:09,052 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 100 flow [2024-10-24 23:33:09,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:09,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:09,052 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 23:33:09,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:33:09,052 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:09,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:09,053 INFO L85 PathProgramCache]: Analyzing trace with hash 8967419, now seen corresponding path program 1 times [2024-10-24 23:33:09,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:09,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154897591] [2024-10-24 23:33:09,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:09,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:09,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:09,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154897591] [2024-10-24 23:33:09,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154897591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:09,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:09,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:33:09,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407516741] [2024-10-24 23:33:09,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:09,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:33:09,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:09,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:33:09,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:33:09,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:09,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:09,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:09,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:09,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:09,208 INFO L124 PetriNetUnfolderBase]: 128/385 cut-off events. [2024-10-24 23:33:09,208 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 23:33:09,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 385 events. 128/385 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2028 event pairs, 104 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 631. Up to 259 conditions per place. [2024-10-24 23:33:09,213 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 28 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-10-24 23:33:09,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 170 flow [2024-10-24 23:33:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:33:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:33:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-24 23:33:09,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-10-24 23:33:09,214 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 100 flow. Second operand 4 states and 101 transitions. [2024-10-24 23:33:09,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 170 flow [2024-10-24 23:33:09,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:33:09,216 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 114 flow [2024-10-24 23:33:09,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-10-24 23:33:09,217 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-10-24 23:33:09,217 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 114 flow [2024-10-24 23:33:09,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:09,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:09,217 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:33:09,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:33:09,218 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:09,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:09,218 INFO L85 PathProgramCache]: Analyzing trace with hash 860675524, now seen corresponding path program 1 times [2024-10-24 23:33:09,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:09,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929206007] [2024-10-24 23:33:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:09,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:33:09,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:09,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929206007] [2024-10-24 23:33:09,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929206007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:09,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:33:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451414076] [2024-10-24 23:33:09,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:09,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:33:09,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:33:09,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:33:09,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:09,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:09,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:09,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:09,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:09,368 INFO L124 PetriNetUnfolderBase]: 128/384 cut-off events. [2024-10-24 23:33:09,368 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 23:33:09,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 384 events. 128/384 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2018 event pairs, 104 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 641. Up to 258 conditions per place. [2024-10-24 23:33:09,372 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-10-24 23:33:09,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 170 flow [2024-10-24 23:33:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:33:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:33:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-24 23:33:09,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-10-24 23:33:09,375 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 114 flow. Second operand 3 states and 80 transitions. [2024-10-24 23:33:09,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 170 flow [2024-10-24 23:33:09,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:09,377 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 116 flow [2024-10-24 23:33:09,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-10-24 23:33:09,378 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-10-24 23:33:09,379 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 116 flow [2024-10-24 23:33:09,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:09,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:09,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:09,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:33:09,380 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:09,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:09,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1403606696, now seen corresponding path program 1 times [2024-10-24 23:33:09,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:09,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315560003] [2024-10-24 23:33:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:09,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:09,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:09,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315560003] [2024-10-24 23:33:09,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315560003] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:09,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686144277] [2024-10-24 23:33:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:09,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:09,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:09,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:33:09,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:33:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:09,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:33:09,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:09,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:33:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:09,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686144277] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:33:09,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:33:09,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-24 23:33:09,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030534972] [2024-10-24 23:33:09,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:33:09,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:09,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:09,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:09,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:09,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:09,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 116 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 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) [2024-10-24 23:33:09,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:09,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:09,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:09,701 INFO L124 PetriNetUnfolderBase]: 128/388 cut-off events. [2024-10-24 23:33:09,701 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-24 23:33:09,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 388 events. 128/388 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2015 event pairs, 104 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 638. Up to 256 conditions per place. [2024-10-24 23:33:09,703 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 26 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2024-10-24 23:33:09,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 200 flow [2024-10-24 23:33:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:33:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:33:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-10-24 23:33:09,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-10-24 23:33:09,707 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 116 flow. Second operand 7 states and 154 transitions. [2024-10-24 23:33:09,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 200 flow [2024-10-24 23:33:09,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:33:09,709 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 145 flow [2024-10-24 23:33:09,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=145, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-10-24 23:33:09,709 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-10-24 23:33:09,709 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 145 flow [2024-10-24 23:33:09,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 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) [2024-10-24 23:33:09,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:09,710 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:09,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:33:09,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:09,915 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:09,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1887628104, now seen corresponding path program 2 times [2024-10-24 23:33:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:09,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081149441] [2024-10-24 23:33:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:10,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081149441] [2024-10-24 23:33:10,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081149441] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240140724] [2024-10-24 23:33:10,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:33:10,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:10,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:10,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:33:10,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:33:10,113 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:33:10,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:33:10,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 23:33:10,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:10,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-24 23:33:10,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-10-24 23:33:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 23:33:10,259 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:33:10,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240140724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:10,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:33:10,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2024-10-24 23:33:10,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444215346] [2024-10-24 23:33:10,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:10,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:10,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:10,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:10,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:33:10,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:10,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:10,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:10,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:10,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:10,439 INFO L124 PetriNetUnfolderBase]: 244/583 cut-off events. [2024-10-24 23:33:10,439 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 23:33:10,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 583 events. 244/583 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2933 event pairs, 38 based on Foata normal form. 21/500 useless extension candidates. Maximal degree in co-relation 1047. Up to 310 conditions per place. [2024-10-24 23:33:10,443 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 73 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-10-24 23:33:10,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 415 flow [2024-10-24 23:33:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:33:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:33:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-10-24 23:33:10,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2024-10-24 23:33:10,446 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 145 flow. Second operand 6 states and 184 transitions. [2024-10-24 23:33:10,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 415 flow [2024-10-24 23:33:10,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 401 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-24 23:33:10,449 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 225 flow [2024-10-24 23:33:10,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-10-24 23:33:10,451 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2024-10-24 23:33:10,452 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 225 flow [2024-10-24 23:33:10,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:10,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:10,453 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:10,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:33:10,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:10,653 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:10,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:10,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1854188663, now seen corresponding path program 1 times [2024-10-24 23:33:10,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:10,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155830775] [2024-10-24 23:33:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 23:33:10,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:10,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155830775] [2024-10-24 23:33:10,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155830775] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:10,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:10,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:10,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479837842] [2024-10-24 23:33:10,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:10,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:33:10,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:33:10,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:33:10,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-24 23:33:10,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:10,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:10,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-24 23:33:10,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:10,769 INFO L124 PetriNetUnfolderBase]: 235/663 cut-off events. [2024-10-24 23:33:10,769 INFO L125 PetriNetUnfolderBase]: For 216/245 co-relation queries the response was YES. [2024-10-24 23:33:10,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 663 events. 235/663 cut-off events. For 216/245 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3603 event pairs, 73 based on Foata normal form. 9/609 useless extension candidates. Maximal degree in co-relation 1327. Up to 297 conditions per place. [2024-10-24 23:33:10,772 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 61 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2024-10-24 23:33:10,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 401 flow [2024-10-24 23:33:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:33:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:33:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-24 23:33:10,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-10-24 23:33:10,773 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 225 flow. Second operand 3 states and 102 transitions. [2024-10-24 23:33:10,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 401 flow [2024-10-24 23:33:10,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 401 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:33:10,779 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 219 flow [2024-10-24 23:33:10,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-10-24 23:33:10,780 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2024-10-24 23:33:10,780 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 219 flow [2024-10-24 23:33:10,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:10,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:10,781 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:10,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:33:10,781 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:10,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:10,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1854156683, now seen corresponding path program 1 times [2024-10-24 23:33:10,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:10,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053806717] [2024-10-24 23:33:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:10,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053806717] [2024-10-24 23:33:10,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053806717] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605282998] [2024-10-24 23:33:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:10,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:10,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:10,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:33:10,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:33:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:10,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:33:10,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:10,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:33:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:11,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605282998] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:33:11,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:33:11,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-24 23:33:11,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250753996] [2024-10-24 23:33:11,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:33:11,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 23:33:11,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:11,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 23:33:11,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-24 23:33:11,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:11,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 219 flow. Second operand has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:11,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:11,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:11,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:11,206 INFO L124 PetriNetUnfolderBase]: 235/695 cut-off events. [2024-10-24 23:33:11,206 INFO L125 PetriNetUnfolderBase]: For 286/306 co-relation queries the response was YES. [2024-10-24 23:33:11,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 695 events. 235/695 cut-off events. For 286/306 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3805 event pairs, 147 based on Foata normal form. 7/649 useless extension candidates. Maximal degree in co-relation 1430. Up to 467 conditions per place. [2024-10-24 23:33:11,209 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 36 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2024-10-24 23:33:11,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 68 transitions, 369 flow [2024-10-24 23:33:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:33:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:33:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 300 transitions. [2024-10-24 23:33:11,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-10-24 23:33:11,210 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 219 flow. Second operand 15 states and 300 transitions. [2024-10-24 23:33:11,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 68 transitions, 369 flow [2024-10-24 23:33:11,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:11,213 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 314 flow [2024-10-24 23:33:11,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=314, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-10-24 23:33:11,214 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2024-10-24 23:33:11,214 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 314 flow [2024-10-24 23:33:11,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:11,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:11,214 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:11,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:33:11,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:11,415 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:11,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:11,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1606643915, now seen corresponding path program 2 times [2024-10-24 23:33:11,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:11,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030325356] [2024-10-24 23:33:11,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:11,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:11,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:11,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030325356] [2024-10-24 23:33:11,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030325356] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:11,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794709759] [2024-10-24 23:33:11,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:33:11,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:11,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:11,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:33:11,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:33:11,638 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:33:11,638 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:33:11,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 23:33:11,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:11,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-24 23:33:11,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-10-24 23:33:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 23:33:11,761 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:33:11,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794709759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:11,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:33:11,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 19 [2024-10-24 23:33:11,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195554200] [2024-10-24 23:33:11,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:11,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:11,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:11,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:33:11,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:11,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:11,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:11,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:11,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:11,968 INFO L124 PetriNetUnfolderBase]: 294/783 cut-off events. [2024-10-24 23:33:11,969 INFO L125 PetriNetUnfolderBase]: For 336/363 co-relation queries the response was YES. [2024-10-24 23:33:11,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 783 events. 294/783 cut-off events. For 336/363 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4257 event pairs, 67 based on Foata normal form. 18/764 useless extension candidates. Maximal degree in co-relation 1661. Up to 459 conditions per place. [2024-10-24 23:33:11,972 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 74 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-10-24 23:33:11,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 101 transitions, 592 flow [2024-10-24 23:33:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:33:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:33:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-10-24 23:33:11,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599290780141844 [2024-10-24 23:33:11,974 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 314 flow. Second operand 6 states and 169 transitions. [2024-10-24 23:33:11,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 101 transitions, 592 flow [2024-10-24 23:33:11,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 574 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-24 23:33:11,979 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 384 flow [2024-10-24 23:33:11,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-10-24 23:33:11,979 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2024-10-24 23:33:11,980 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 384 flow [2024-10-24 23:33:11,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:11,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:11,980 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:11,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:33:12,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:12,181 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:12,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash -696031829, now seen corresponding path program 1 times [2024-10-24 23:33:12,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:12,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842188591] [2024-10-24 23:33:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:12,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 23:33:12,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:12,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842188591] [2024-10-24 23:33:12,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842188591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:12,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:12,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:12,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232854424] [2024-10-24 23:33:12,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:12,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:12,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:12,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:12,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:33:12,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:12,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:12,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:12,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:12,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:12,455 INFO L124 PetriNetUnfolderBase]: 284/775 cut-off events. [2024-10-24 23:33:12,455 INFO L125 PetriNetUnfolderBase]: For 680/701 co-relation queries the response was YES. [2024-10-24 23:33:12,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1954 conditions, 775 events. 284/775 cut-off events. For 680/701 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4271 event pairs, 90 based on Foata normal form. 27/764 useless extension candidates. Maximal degree in co-relation 1850. Up to 499 conditions per place. [2024-10-24 23:33:12,458 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 76 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2024-10-24 23:33:12,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 644 flow [2024-10-24 23:33:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:33:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:33:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-10-24 23:33:12,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599290780141844 [2024-10-24 23:33:12,459 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 384 flow. Second operand 6 states and 169 transitions. [2024-10-24 23:33:12,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 644 flow [2024-10-24 23:33:12,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 101 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:12,464 INFO L231 Difference]: Finished difference. Result has 93 places, 74 transitions, 392 flow [2024-10-24 23:33:12,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=93, PETRI_TRANSITIONS=74} [2024-10-24 23:33:12,465 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2024-10-24 23:33:12,465 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 74 transitions, 392 flow [2024-10-24 23:33:12,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:12,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:12,466 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:12,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:33:12,466 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:12,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:12,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1733645918, now seen corresponding path program 1 times [2024-10-24 23:33:12,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:12,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614993950] [2024-10-24 23:33:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 23:33:12,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:12,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614993950] [2024-10-24 23:33:12,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614993950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:12,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:12,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:12,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047981010] [2024-10-24 23:33:12,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:12,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:33:12,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:12,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:33:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:33:12,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:12,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 74 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:12,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:12,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:12,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:12,735 INFO L124 PetriNetUnfolderBase]: 280/761 cut-off events. [2024-10-24 23:33:12,735 INFO L125 PetriNetUnfolderBase]: For 637/646 co-relation queries the response was YES. [2024-10-24 23:33:12,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 761 events. 280/761 cut-off events. For 637/646 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4162 event pairs, 77 based on Foata normal form. 16/741 useless extension candidates. Maximal degree in co-relation 1827. Up to 495 conditions per place. [2024-10-24 23:33:12,739 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 71 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-10-24 23:33:12,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 630 flow [2024-10-24 23:33:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:33:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:33:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-10-24 23:33:12,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2024-10-24 23:33:12,740 INFO L175 Difference]: Start difference. First operand has 93 places, 74 transitions, 392 flow. Second operand 6 states and 166 transitions. [2024-10-24 23:33:12,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 630 flow [2024-10-24 23:33:12,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 595 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:33:12,744 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 383 flow [2024-10-24 23:33:12,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=383, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2024-10-24 23:33:12,745 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2024-10-24 23:33:12,745 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 383 flow [2024-10-24 23:33:12,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:12,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:12,745 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:12,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:33:12,746 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:12,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:12,746 INFO L85 PathProgramCache]: Analyzing trace with hash 618193227, now seen corresponding path program 1 times [2024-10-24 23:33:12,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:12,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867023496] [2024-10-24 23:33:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:12,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 23:33:12,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:12,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867023496] [2024-10-24 23:33:12,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867023496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:12,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:12,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:12,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353494099] [2024-10-24 23:33:12,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:12,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:33:12,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:12,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:33:12,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:33:12,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:12,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:12,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:12,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:12,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:13,004 INFO L124 PetriNetUnfolderBase]: 415/1098 cut-off events. [2024-10-24 23:33:13,005 INFO L125 PetriNetUnfolderBase]: For 713/735 co-relation queries the response was YES. [2024-10-24 23:33:13,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2657 conditions, 1098 events. 415/1098 cut-off events. For 713/735 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6240 event pairs, 211 based on Foata normal form. 43/1089 useless extension candidates. Maximal degree in co-relation 2553. Up to 506 conditions per place. [2024-10-24 23:33:13,010 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 100 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2024-10-24 23:33:13,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 759 flow [2024-10-24 23:33:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:33:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:33:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-10-24 23:33:13,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-10-24 23:33:13,011 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 383 flow. Second operand 4 states and 136 transitions. [2024-10-24 23:33:13,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 759 flow [2024-10-24 23:33:13,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 117 transitions, 726 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:33:13,015 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 384 flow [2024-10-24 23:33:13,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-10-24 23:33:13,016 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2024-10-24 23:33:13,016 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 384 flow [2024-10-24 23:33:13,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:13,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:13,016 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:13,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 23:33:13,016 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:13,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash -63529020, now seen corresponding path program 1 times [2024-10-24 23:33:13,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703402006] [2024-10-24 23:33:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:13,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 23:33:13,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:13,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703402006] [2024-10-24 23:33:13,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703402006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:13,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:13,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:33:13,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163881895] [2024-10-24 23:33:13,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:13,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:33:13,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:13,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:33:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:33:13,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:13,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:13,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:13,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:13,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:13,223 INFO L124 PetriNetUnfolderBase]: 405/1082 cut-off events. [2024-10-24 23:33:13,223 INFO L125 PetriNetUnfolderBase]: For 789/804 co-relation queries the response was YES. [2024-10-24 23:33:13,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 1082 events. 405/1082 cut-off events. For 789/804 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6153 event pairs, 212 based on Foata normal form. 34/1100 useless extension candidates. Maximal degree in co-relation 2668. Up to 566 conditions per place. [2024-10-24 23:33:13,228 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 92 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-10-24 23:33:13,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 109 transitions, 720 flow [2024-10-24 23:33:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:33:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:33:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-10-24 23:33:13,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6648936170212766 [2024-10-24 23:33:13,230 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 384 flow. Second operand 4 states and 125 transitions. [2024-10-24 23:33:13,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 109 transitions, 720 flow [2024-10-24 23:33:13,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 109 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:33:13,233 INFO L231 Difference]: Finished difference. Result has 97 places, 76 transitions, 400 flow [2024-10-24 23:33:13,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=97, PETRI_TRANSITIONS=76} [2024-10-24 23:33:13,234 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 50 predicate places. [2024-10-24 23:33:13,234 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 76 transitions, 400 flow [2024-10-24 23:33:13,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:13,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:13,235 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:13,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 23:33:13,235 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:13,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1958451573, now seen corresponding path program 1 times [2024-10-24 23:33:13,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:13,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702352225] [2024-10-24 23:33:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:13,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:13,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:13,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702352225] [2024-10-24 23:33:13,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702352225] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:13,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753275109] [2024-10-24 23:33:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:13,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:13,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:13,448 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:33:13,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:33:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:13,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:33:13,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:13,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:33:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:33:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753275109] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:33:13,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:33:13,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-10-24 23:33:13,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890387906] [2024-10-24 23:33:13,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:33:13,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 23:33:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:13,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 23:33:13,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-10-24 23:33:13,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:13,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 400 flow. Second operand has 21 states, 21 states have (on average 18.523809523809526) internal successors, (389), 21 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:13,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:13,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:13,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:13,934 INFO L124 PetriNetUnfolderBase]: 371/1062 cut-off events. [2024-10-24 23:33:13,934 INFO L125 PetriNetUnfolderBase]: For 896/910 co-relation queries the response was YES. [2024-10-24 23:33:13,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 1062 events. 371/1062 cut-off events. For 896/910 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6153 event pairs, 255 based on Foata normal form. 3/1049 useless extension candidates. Maximal degree in co-relation 2657. Up to 736 conditions per place. [2024-10-24 23:33:13,939 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 45 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2024-10-24 23:33:13,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 82 transitions, 586 flow [2024-10-24 23:33:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 23:33:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-24 23:33:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 407 transitions. [2024-10-24 23:33:13,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41236068895643363 [2024-10-24 23:33:13,941 INFO L175 Difference]: Start difference. First operand has 97 places, 76 transitions, 400 flow. Second operand 21 states and 407 transitions. [2024-10-24 23:33:13,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 82 transitions, 586 flow [2024-10-24 23:33:13,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 82 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:33:13,945 INFO L231 Difference]: Finished difference. Result has 118 places, 82 transitions, 507 flow [2024-10-24 23:33:13,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=507, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2024-10-24 23:33:13,946 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 71 predicate places. [2024-10-24 23:33:13,946 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 507 flow [2024-10-24 23:33:13,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.523809523809526) internal successors, (389), 21 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:13,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:13,946 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:13,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:33:14,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 23:33:14,148 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:14,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1282654220, now seen corresponding path program 2 times [2024-10-24 23:33:14,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:14,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503725585] [2024-10-24 23:33:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:14,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:14,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:14,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503725585] [2024-10-24 23:33:14,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503725585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:14,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:14,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:14,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156034017] [2024-10-24 23:33:14,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:14,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:14,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:14,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:14,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:14,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:14,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 507 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:14,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:14,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:14,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:14,886 INFO L124 PetriNetUnfolderBase]: 617/1542 cut-off events. [2024-10-24 23:33:14,887 INFO L125 PetriNetUnfolderBase]: For 1585/1589 co-relation queries the response was YES. [2024-10-24 23:33:14,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4241 conditions, 1542 events. 617/1542 cut-off events. For 1585/1589 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9298 event pairs, 207 based on Foata normal form. 22/1542 useless extension candidates. Maximal degree in co-relation 4070. Up to 874 conditions per place. [2024-10-24 23:33:14,894 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 112 selfloop transitions, 39 changer transitions 0/163 dead transitions. [2024-10-24 23:33:14,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 163 transitions, 1190 flow [2024-10-24 23:33:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:33:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:33:14,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 338 transitions. [2024-10-24 23:33:14,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4794326241134752 [2024-10-24 23:33:14,896 INFO L175 Difference]: Start difference. First operand has 118 places, 82 transitions, 507 flow. Second operand 15 states and 338 transitions. [2024-10-24 23:33:14,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 163 transitions, 1190 flow [2024-10-24 23:33:14,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 163 transitions, 1141 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-10-24 23:33:14,902 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 787 flow [2024-10-24 23:33:14,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=787, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-10-24 23:33:14,903 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 78 predicate places. [2024-10-24 23:33:14,903 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 787 flow [2024-10-24 23:33:14,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:14,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:14,904 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:14,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 23:33:14,904 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:14,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash -626349252, now seen corresponding path program 3 times [2024-10-24 23:33:14,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599261504] [2024-10-24 23:33:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:14,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:15,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:15,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599261504] [2024-10-24 23:33:15,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599261504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:15,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:15,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:15,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532358688] [2024-10-24 23:33:15,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:15,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:15,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:15,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:15,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:15,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:15,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 787 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:15,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:15,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:15,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:15,597 INFO L124 PetriNetUnfolderBase]: 710/1744 cut-off events. [2024-10-24 23:33:15,598 INFO L125 PetriNetUnfolderBase]: For 3886/3888 co-relation queries the response was YES. [2024-10-24 23:33:15,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5471 conditions, 1744 events. 710/1744 cut-off events. For 3886/3888 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10845 event pairs, 240 based on Foata normal form. 20/1741 useless extension candidates. Maximal degree in co-relation 5317. Up to 887 conditions per place. [2024-10-24 23:33:15,606 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 110 selfloop transitions, 55 changer transitions 0/177 dead transitions. [2024-10-24 23:33:15,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 177 transitions, 1466 flow [2024-10-24 23:33:15,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:33:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:33:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 349 transitions. [2024-10-24 23:33:15,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4640957446808511 [2024-10-24 23:33:15,608 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 787 flow. Second operand 16 states and 349 transitions. [2024-10-24 23:33:15,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 177 transitions, 1466 flow [2024-10-24 23:33:15,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 177 transitions, 1427 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-24 23:33:15,616 INFO L231 Difference]: Finished difference. Result has 140 places, 125 transitions, 1077 flow [2024-10-24 23:33:15,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1077, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2024-10-24 23:33:15,616 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 93 predicate places. [2024-10-24 23:33:15,616 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 1077 flow [2024-10-24 23:33:15,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:15,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:15,617 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:15,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 23:33:15,617 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:15,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:15,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1112743414, now seen corresponding path program 1 times [2024-10-24 23:33:15,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:15,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700017711] [2024-10-24 23:33:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:15,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:15,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700017711] [2024-10-24 23:33:15,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700017711] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:15,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:15,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:15,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664876575] [2024-10-24 23:33:15,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:15,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:15,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:15,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:15,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:15,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:15,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 1077 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:15,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:15,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:15,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:16,298 INFO L124 PetriNetUnfolderBase]: 841/2005 cut-off events. [2024-10-24 23:33:16,299 INFO L125 PetriNetUnfolderBase]: For 7540/7546 co-relation queries the response was YES. [2024-10-24 23:33:16,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 2005 events. 841/2005 cut-off events. For 7540/7546 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 12868 event pairs, 243 based on Foata normal form. 27/2009 useless extension candidates. Maximal degree in co-relation 6920. Up to 1154 conditions per place. [2024-10-24 23:33:16,312 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 155 selfloop transitions, 47 changer transitions 0/214 dead transitions. [2024-10-24 23:33:16,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 214 transitions, 2055 flow [2024-10-24 23:33:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:33:16,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 23:33:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 299 transitions. [2024-10-24 23:33:16,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5301418439716312 [2024-10-24 23:33:16,313 INFO L175 Difference]: Start difference. First operand has 140 places, 125 transitions, 1077 flow. Second operand 12 states and 299 transitions. [2024-10-24 23:33:16,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 214 transitions, 2055 flow [2024-10-24 23:33:16,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 214 transitions, 1987 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-10-24 23:33:16,328 INFO L231 Difference]: Finished difference. Result has 149 places, 143 transitions, 1368 flow [2024-10-24 23:33:16,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1368, PETRI_PLACES=149, PETRI_TRANSITIONS=143} [2024-10-24 23:33:16,329 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 102 predicate places. [2024-10-24 23:33:16,329 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 143 transitions, 1368 flow [2024-10-24 23:33:16,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:16,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:16,329 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:16,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 23:33:16,329 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:16,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:16,330 INFO L85 PathProgramCache]: Analyzing trace with hash -585525972, now seen corresponding path program 4 times [2024-10-24 23:33:16,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:16,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583337727] [2024-10-24 23:33:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:16,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:16,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:16,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583337727] [2024-10-24 23:33:16,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583337727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:16,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:16,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:16,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496183236] [2024-10-24 23:33:16,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:16,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:16,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:16,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:16,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:16,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:16,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 143 transitions, 1368 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:16,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:16,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:16,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:17,097 INFO L124 PetriNetUnfolderBase]: 1069/2492 cut-off events. [2024-10-24 23:33:17,098 INFO L125 PetriNetUnfolderBase]: For 13456/13466 co-relation queries the response was YES. [2024-10-24 23:33:17,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9672 conditions, 2492 events. 1069/2492 cut-off events. For 13456/13466 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 16686 event pairs, 132 based on Foata normal form. 48/2516 useless extension candidates. Maximal degree in co-relation 9509. Up to 1029 conditions per place. [2024-10-24 23:33:17,117 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 153 selfloop transitions, 96 changer transitions 0/261 dead transitions. [2024-10-24 23:33:17,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 261 transitions, 2689 flow [2024-10-24 23:33:17,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:33:17,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:33:17,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 376 transitions. [2024-10-24 23:33:17,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-24 23:33:17,119 INFO L175 Difference]: Start difference. First operand has 149 places, 143 transitions, 1368 flow. Second operand 16 states and 376 transitions. [2024-10-24 23:33:17,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 261 transitions, 2689 flow [2024-10-24 23:33:17,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 261 transitions, 2587 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-10-24 23:33:17,144 INFO L231 Difference]: Finished difference. Result has 163 places, 175 transitions, 2012 flow [2024-10-24 23:33:17,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2012, PETRI_PLACES=163, PETRI_TRANSITIONS=175} [2024-10-24 23:33:17,145 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 116 predicate places. [2024-10-24 23:33:17,145 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 175 transitions, 2012 flow [2024-10-24 23:33:17,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:17,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:17,145 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:17,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 23:33:17,145 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:17,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:17,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1215157386, now seen corresponding path program 2 times [2024-10-24 23:33:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:17,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494830602] [2024-10-24 23:33:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:17,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:17,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:17,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494830602] [2024-10-24 23:33:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494830602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:17,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:17,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857231444] [2024-10-24 23:33:17,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:17,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:17,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:17,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 175 transitions, 2012 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:17,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:17,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:17,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:18,040 INFO L124 PetriNetUnfolderBase]: 1246/2848 cut-off events. [2024-10-24 23:33:18,041 INFO L125 PetriNetUnfolderBase]: For 20632/20651 co-relation queries the response was YES. [2024-10-24 23:33:18,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12285 conditions, 2848 events. 1246/2848 cut-off events. For 20632/20651 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 19502 event pairs, 354 based on Foata normal form. 28/2837 useless extension candidates. Maximal degree in co-relation 12117. Up to 1719 conditions per place. [2024-10-24 23:33:18,057 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 201 selfloop transitions, 75 changer transitions 0/288 dead transitions. [2024-10-24 23:33:18,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 288 transitions, 3595 flow [2024-10-24 23:33:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:33:18,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:33:18,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 350 transitions. [2024-10-24 23:33:18,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-10-24 23:33:18,058 INFO L175 Difference]: Start difference. First operand has 163 places, 175 transitions, 2012 flow. Second operand 15 states and 350 transitions. [2024-10-24 23:33:18,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 288 transitions, 3595 flow [2024-10-24 23:33:18,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 288 transitions, 3464 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-10-24 23:33:18,093 INFO L231 Difference]: Finished difference. Result has 172 places, 207 transitions, 2646 flow [2024-10-24 23:33:18,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2646, PETRI_PLACES=172, PETRI_TRANSITIONS=207} [2024-10-24 23:33:18,093 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 125 predicate places. [2024-10-24 23:33:18,094 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 207 transitions, 2646 flow [2024-10-24 23:33:18,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:18,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:18,094 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:18,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 23:33:18,094 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:18,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:18,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1586084474, now seen corresponding path program 3 times [2024-10-24 23:33:18,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397677047] [2024-10-24 23:33:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:18,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:18,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:18,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397677047] [2024-10-24 23:33:18,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397677047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:18,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:18,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:18,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791979993] [2024-10-24 23:33:18,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:18,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:18,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:18,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:18,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:18,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:18,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 207 transitions, 2646 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:18,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:18,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:18,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:18,936 INFO L124 PetriNetUnfolderBase]: 1368/3119 cut-off events. [2024-10-24 23:33:18,937 INFO L125 PetriNetUnfolderBase]: For 28121/28148 co-relation queries the response was YES. [2024-10-24 23:33:18,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14402 conditions, 3119 events. 1368/3119 cut-off events. For 28121/28148 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 21881 event pairs, 378 based on Foata normal form. 34/3109 useless extension candidates. Maximal degree in co-relation 14229. Up to 1592 conditions per place. [2024-10-24 23:33:18,955 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 183 selfloop transitions, 113 changer transitions 0/308 dead transitions. [2024-10-24 23:33:18,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 308 transitions, 4114 flow [2024-10-24 23:33:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:33:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:33:18,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 361 transitions. [2024-10-24 23:33:18,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4800531914893617 [2024-10-24 23:33:18,957 INFO L175 Difference]: Start difference. First operand has 172 places, 207 transitions, 2646 flow. Second operand 16 states and 361 transitions. [2024-10-24 23:33:18,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 308 transitions, 4114 flow [2024-10-24 23:33:19,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 308 transitions, 4029 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-10-24 23:33:19,007 INFO L231 Difference]: Finished difference. Result has 183 places, 226 transitions, 3275 flow [2024-10-24 23:33:19,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3275, PETRI_PLACES=183, PETRI_TRANSITIONS=226} [2024-10-24 23:33:19,007 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 136 predicate places. [2024-10-24 23:33:19,008 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 226 transitions, 3275 flow [2024-10-24 23:33:19,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:19,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:19,008 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:19,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 23:33:19,008 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:19,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1469841914, now seen corresponding path program 4 times [2024-10-24 23:33:19,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:19,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067359280] [2024-10-24 23:33:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:19,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:19,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:19,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067359280] [2024-10-24 23:33:19,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067359280] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:19,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725330843] [2024-10-24 23:33:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:19,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:19,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:19,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:19,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:19,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:19,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 226 transitions, 3275 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:19,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:19,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:19,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:19,929 INFO L124 PetriNetUnfolderBase]: 1514/3444 cut-off events. [2024-10-24 23:33:19,930 INFO L125 PetriNetUnfolderBase]: For 40900/40914 co-relation queries the response was YES. [2024-10-24 23:33:19,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17034 conditions, 3444 events. 1514/3444 cut-off events. For 40900/40914 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 24505 event pairs, 192 based on Foata normal form. 76/3482 useless extension candidates. Maximal degree in co-relation 16856. Up to 1299 conditions per place. [2024-10-24 23:33:19,950 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 189 selfloop transitions, 160 changer transitions 0/361 dead transitions. [2024-10-24 23:33:19,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 361 transitions, 5184 flow [2024-10-24 23:33:19,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:33:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:33:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 389 transitions. [2024-10-24 23:33:19,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172872340425532 [2024-10-24 23:33:19,952 INFO L175 Difference]: Start difference. First operand has 183 places, 226 transitions, 3275 flow. Second operand 16 states and 389 transitions. [2024-10-24 23:33:19,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 361 transitions, 5184 flow [2024-10-24 23:33:20,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 361 transitions, 5030 flow, removed 39 selfloop flow, removed 12 redundant places. [2024-10-24 23:33:20,042 INFO L231 Difference]: Finished difference. Result has 192 places, 255 transitions, 4234 flow [2024-10-24 23:33:20,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4234, PETRI_PLACES=192, PETRI_TRANSITIONS=255} [2024-10-24 23:33:20,042 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 145 predicate places. [2024-10-24 23:33:20,043 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 255 transitions, 4234 flow [2024-10-24 23:33:20,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:20,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:20,043 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:20,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 23:33:20,043 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:20,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash 830904273, now seen corresponding path program 1 times [2024-10-24 23:33:20,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:20,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975941300] [2024-10-24 23:33:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:20,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:20,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:20,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975941300] [2024-10-24 23:33:20,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975941300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:20,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:20,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:20,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894663353] [2024-10-24 23:33:20,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:20,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:20,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:20,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:20,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 255 transitions, 4234 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:20,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:20,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:20,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:20,994 INFO L124 PetriNetUnfolderBase]: 1493/3367 cut-off events. [2024-10-24 23:33:20,995 INFO L125 PetriNetUnfolderBase]: For 49278/49300 co-relation queries the response was YES. [2024-10-24 23:33:21,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18233 conditions, 3367 events. 1493/3367 cut-off events. For 49278/49300 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 23846 event pairs, 523 based on Foata normal form. 25/3346 useless extension candidates. Maximal degree in co-relation 18048. Up to 2575 conditions per place. [2024-10-24 23:33:21,016 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 251 selfloop transitions, 56 changer transitions 0/319 dead transitions. [2024-10-24 23:33:21,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 319 transitions, 5529 flow [2024-10-24 23:33:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:33:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:33:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 331 transitions. [2024-10-24 23:33:21,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4695035460992908 [2024-10-24 23:33:21,018 INFO L175 Difference]: Start difference. First operand has 192 places, 255 transitions, 4234 flow. Second operand 15 states and 331 transitions. [2024-10-24 23:33:21,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 319 transitions, 5529 flow [2024-10-24 23:33:21,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 319 transitions, 5330 flow, removed 49 selfloop flow, removed 11 redundant places. [2024-10-24 23:33:21,127 INFO L231 Difference]: Finished difference. Result has 196 places, 255 transitions, 4184 flow [2024-10-24 23:33:21,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4184, PETRI_PLACES=196, PETRI_TRANSITIONS=255} [2024-10-24 23:33:21,128 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 149 predicate places. [2024-10-24 23:33:21,128 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 255 transitions, 4184 flow [2024-10-24 23:33:21,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:21,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:21,128 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:21,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 23:33:21,128 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:21,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash 135307773, now seen corresponding path program 1 times [2024-10-24 23:33:21,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:21,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858005449] [2024-10-24 23:33:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:21,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:21,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858005449] [2024-10-24 23:33:21,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858005449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:21,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:21,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:21,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155423756] [2024-10-24 23:33:21,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:21,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:21,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:21,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:21,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:21,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:21,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 255 transitions, 4184 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:21,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:21,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:21,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:22,019 INFO L124 PetriNetUnfolderBase]: 1464/3358 cut-off events. [2024-10-24 23:33:22,019 INFO L125 PetriNetUnfolderBase]: For 47160/47182 co-relation queries the response was YES. [2024-10-24 23:33:22,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17782 conditions, 3358 events. 1464/3358 cut-off events. For 47160/47182 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23979 event pairs, 506 based on Foata normal form. 34/3341 useless extension candidates. Maximal degree in co-relation 17597. Up to 2488 conditions per place. [2024-10-24 23:33:22,040 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 252 selfloop transitions, 60 changer transitions 0/324 dead transitions. [2024-10-24 23:33:22,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 324 transitions, 5380 flow [2024-10-24 23:33:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:33:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 23:33:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 290 transitions. [2024-10-24 23:33:22,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-10-24 23:33:22,042 INFO L175 Difference]: Start difference. First operand has 196 places, 255 transitions, 4184 flow. Second operand 12 states and 290 transitions. [2024-10-24 23:33:22,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 324 transitions, 5380 flow [2024-10-24 23:33:22,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 324 transitions, 5285 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-24 23:33:22,146 INFO L231 Difference]: Finished difference. Result has 195 places, 254 transitions, 4200 flow [2024-10-24 23:33:22,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4200, PETRI_PLACES=195, PETRI_TRANSITIONS=254} [2024-10-24 23:33:22,146 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 148 predicate places. [2024-10-24 23:33:22,147 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 254 transitions, 4200 flow [2024-10-24 23:33:22,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:22,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:22,147 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:22,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 23:33:22,147 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:22,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2058009937, now seen corresponding path program 2 times [2024-10-24 23:33:22,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:22,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493735127] [2024-10-24 23:33:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:22,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:22,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493735127] [2024-10-24 23:33:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493735127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:22,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:22,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:22,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337499702] [2024-10-24 23:33:22,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:22,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:22,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:22,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:22,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 254 transitions, 4200 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:22,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:22,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:22,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:22,976 INFO L124 PetriNetUnfolderBase]: 1443/3295 cut-off events. [2024-10-24 23:33:22,976 INFO L125 PetriNetUnfolderBase]: For 46719/46738 co-relation queries the response was YES. [2024-10-24 23:33:22,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17534 conditions, 3295 events. 1443/3295 cut-off events. For 46719/46738 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 23463 event pairs, 508 based on Foata normal form. 25/3276 useless extension candidates. Maximal degree in co-relation 17350. Up to 2447 conditions per place. [2024-10-24 23:33:22,998 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 228 selfloop transitions, 71 changer transitions 0/311 dead transitions. [2024-10-24 23:33:22,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 311 transitions, 5369 flow [2024-10-24 23:33:22,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:33:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:33:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 342 transitions. [2024-10-24 23:33:23,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45478723404255317 [2024-10-24 23:33:23,001 INFO L175 Difference]: Start difference. First operand has 195 places, 254 transitions, 4200 flow. Second operand 16 states and 342 transitions. [2024-10-24 23:33:23,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 311 transitions, 5369 flow [2024-10-24 23:33:23,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 311 transitions, 5265 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-10-24 23:33:23,104 INFO L231 Difference]: Finished difference. Result has 200 places, 253 transitions, 4232 flow [2024-10-24 23:33:23,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4090, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4232, PETRI_PLACES=200, PETRI_TRANSITIONS=253} [2024-10-24 23:33:23,105 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 153 predicate places. [2024-10-24 23:33:23,105 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 253 transitions, 4232 flow [2024-10-24 23:33:23,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:23,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:23,105 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:23,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 23:33:23,105 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:23,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:23,105 INFO L85 PathProgramCache]: Analyzing trace with hash -971435679, now seen corresponding path program 3 times [2024-10-24 23:33:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:23,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527910698] [2024-10-24 23:33:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:23,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:23,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:23,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527910698] [2024-10-24 23:33:23,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527910698] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:23,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:23,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753952596] [2024-10-24 23:33:23,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:23,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:23,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:23,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:23,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:23,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:23,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 253 transitions, 4232 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:23,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:23,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:23,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:23,954 INFO L124 PetriNetUnfolderBase]: 1422/3259 cut-off events. [2024-10-24 23:33:23,954 INFO L125 PetriNetUnfolderBase]: For 46177/46193 co-relation queries the response was YES. [2024-10-24 23:33:23,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 3259 events. 1422/3259 cut-off events. For 46177/46193 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23181 event pairs, 454 based on Foata normal form. 25/3241 useless extension candidates. Maximal degree in co-relation 17173. Up to 2326 conditions per place. [2024-10-24 23:33:23,978 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 234 selfloop transitions, 84 changer transitions 0/330 dead transitions. [2024-10-24 23:33:23,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 330 transitions, 5688 flow [2024-10-24 23:33:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:33:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:33:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 333 transitions. [2024-10-24 23:33:23,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4723404255319149 [2024-10-24 23:33:23,980 INFO L175 Difference]: Start difference. First operand has 200 places, 253 transitions, 4232 flow. Second operand 15 states and 333 transitions. [2024-10-24 23:33:23,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 330 transitions, 5688 flow [2024-10-24 23:33:24,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 330 transitions, 5572 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-24 23:33:24,090 INFO L231 Difference]: Finished difference. Result has 205 places, 265 transitions, 4570 flow [2024-10-24 23:33:24,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4116, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4570, PETRI_PLACES=205, PETRI_TRANSITIONS=265} [2024-10-24 23:33:24,091 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 158 predicate places. [2024-10-24 23:33:24,091 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 265 transitions, 4570 flow [2024-10-24 23:33:24,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:24,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:24,092 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:24,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 23:33:24,092 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:24,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:24,093 INFO L85 PathProgramCache]: Analyzing trace with hash 984827005, now seen corresponding path program 2 times [2024-10-24 23:33:24,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:24,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024195884] [2024-10-24 23:33:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:24,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:24,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:24,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024195884] [2024-10-24 23:33:24,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024195884] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:24,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:24,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:24,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895753199] [2024-10-24 23:33:24,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:24,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:24,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:24,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:24,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:24,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:24,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 265 transitions, 4570 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:24,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:24,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:24,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:25,084 INFO L124 PetriNetUnfolderBase]: 1393/3246 cut-off events. [2024-10-24 23:33:25,084 INFO L125 PetriNetUnfolderBase]: For 48351/48370 co-relation queries the response was YES. [2024-10-24 23:33:25,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17598 conditions, 3246 events. 1393/3246 cut-off events. For 48351/48370 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 23229 event pairs, 476 based on Foata normal form. 30/3226 useless extension candidates. Maximal degree in co-relation 17411. Up to 2390 conditions per place. [2024-10-24 23:33:25,147 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 261 selfloop transitions, 61 changer transitions 0/334 dead transitions. [2024-10-24 23:33:25,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 334 transitions, 5796 flow [2024-10-24 23:33:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:33:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:33:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 342 transitions. [2024-10-24 23:33:25,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-10-24 23:33:25,148 INFO L175 Difference]: Start difference. First operand has 205 places, 265 transitions, 4570 flow. Second operand 15 states and 342 transitions. [2024-10-24 23:33:25,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 334 transitions, 5796 flow [2024-10-24 23:33:25,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 334 transitions, 5662 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-10-24 23:33:25,246 INFO L231 Difference]: Finished difference. Result has 208 places, 264 transitions, 4552 flow [2024-10-24 23:33:25,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4430, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4552, PETRI_PLACES=208, PETRI_TRANSITIONS=264} [2024-10-24 23:33:25,246 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 161 predicate places. [2024-10-24 23:33:25,246 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 264 transitions, 4552 flow [2024-10-24 23:33:25,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:25,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:25,247 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:25,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 23:33:25,247 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:25,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1923978745, now seen corresponding path program 3 times [2024-10-24 23:33:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:25,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103500995] [2024-10-24 23:33:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:25,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:25,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103500995] [2024-10-24 23:33:25,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103500995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:25,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:25,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:25,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013996280] [2024-10-24 23:33:25,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:25,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:25,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:25,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:25,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:25,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:25,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 264 transitions, 4552 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:25,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:25,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:25,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:26,029 INFO L124 PetriNetUnfolderBase]: 1364/3224 cut-off events. [2024-10-24 23:33:26,029 INFO L125 PetriNetUnfolderBase]: For 48270/48298 co-relation queries the response was YES. [2024-10-24 23:33:26,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17313 conditions, 3224 events. 1364/3224 cut-off events. For 48270/48298 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 23225 event pairs, 432 based on Foata normal form. 38/3215 useless extension candidates. Maximal degree in co-relation 17127. Up to 2204 conditions per place. [2024-10-24 23:33:26,051 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 223 selfloop transitions, 92 changer transitions 0/327 dead transitions. [2024-10-24 23:33:26,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 327 transitions, 5677 flow [2024-10-24 23:33:26,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:33:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:33:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 353 transitions. [2024-10-24 23:33:26,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46941489361702127 [2024-10-24 23:33:26,052 INFO L175 Difference]: Start difference. First operand has 208 places, 264 transitions, 4552 flow. Second operand 16 states and 353 transitions. [2024-10-24 23:33:26,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 327 transitions, 5677 flow [2024-10-24 23:33:26,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 327 transitions, 5581 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-10-24 23:33:26,150 INFO L231 Difference]: Finished difference. Result has 211 places, 263 transitions, 4627 flow [2024-10-24 23:33:26,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4443, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4627, PETRI_PLACES=211, PETRI_TRANSITIONS=263} [2024-10-24 23:33:26,150 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 164 predicate places. [2024-10-24 23:33:26,150 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 263 transitions, 4627 flow [2024-10-24 23:33:26,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:26,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:26,151 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:26,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 23:33:26,151 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:26,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:26,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1679540615, now seen corresponding path program 4 times [2024-10-24 23:33:26,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:26,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071076616] [2024-10-24 23:33:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:26,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:26,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:26,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071076616] [2024-10-24 23:33:26,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071076616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:33:26,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:33:26,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:33:26,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465583589] [2024-10-24 23:33:26,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:33:26,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:33:26,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:26,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:33:26,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:33:26,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-24 23:33:26,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 263 transitions, 4627 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:26,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:26,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-24 23:33:26,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:26,924 INFO L124 PetriNetUnfolderBase]: 1335/3147 cut-off events. [2024-10-24 23:33:26,924 INFO L125 PetriNetUnfolderBase]: For 48249/48278 co-relation queries the response was YES. [2024-10-24 23:33:26,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17152 conditions, 3147 events. 1335/3147 cut-off events. For 48249/48278 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 22555 event pairs, 349 based on Foata normal form. 40/3150 useless extension candidates. Maximal degree in co-relation 16966. Up to 2049 conditions per place. [2024-10-24 23:33:26,944 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 218 selfloop transitions, 107 changer transitions 0/337 dead transitions. [2024-10-24 23:33:26,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 337 transitions, 5863 flow [2024-10-24 23:33:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:33:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:33:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 347 transitions. [2024-10-24 23:33:26,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4921985815602837 [2024-10-24 23:33:26,945 INFO L175 Difference]: Start difference. First operand has 211 places, 263 transitions, 4627 flow. Second operand 15 states and 347 transitions. [2024-10-24 23:33:26,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 337 transitions, 5863 flow [2024-10-24 23:33:27,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 337 transitions, 5697 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-24 23:33:27,052 INFO L231 Difference]: Finished difference. Result has 216 places, 266 transitions, 4832 flow [2024-10-24 23:33:27,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4423, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4832, PETRI_PLACES=216, PETRI_TRANSITIONS=266} [2024-10-24 23:33:27,053 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 169 predicate places. [2024-10-24 23:33:27,053 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 266 transitions, 4832 flow [2024-10-24 23:33:27,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:27,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:27,053 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:27,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 23:33:27,053 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:27,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:27,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1839380383, now seen corresponding path program 1 times [2024-10-24 23:33:27,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:27,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162487777] [2024-10-24 23:33:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:27,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:27,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:27,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162487777] [2024-10-24 23:33:27,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162487777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:27,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682466115] [2024-10-24 23:33:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:27,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:27,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:27,102 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:33:27,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:33:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:27,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:33:27,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:27,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:33:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:27,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682466115] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:33:27,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:33:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-24 23:33:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612219415] [2024-10-24 23:33:27,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:33:27,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 23:33:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 23:33:27,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 23:33:27,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:33:27,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 266 transitions, 4832 flow. Second operand has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:27,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:27,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:33:27,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:27,786 INFO L124 PetriNetUnfolderBase]: 1365/3322 cut-off events. [2024-10-24 23:33:27,786 INFO L125 PetriNetUnfolderBase]: For 52816/53316 co-relation queries the response was YES. [2024-10-24 23:33:27,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18221 conditions, 3322 events. 1365/3322 cut-off events. For 52816/53316 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 22383 event pairs, 312 based on Foata normal form. 228/3520 useless extension candidates. Maximal degree in co-relation 18032. Up to 681 conditions per place. [2024-10-24 23:33:27,807 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 419 selfloop transitions, 14 changer transitions 0/449 dead transitions. [2024-10-24 23:33:27,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 449 transitions, 8090 flow [2024-10-24 23:33:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 23:33:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 23:33:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 265 transitions. [2024-10-24 23:33:27,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6264775413711584 [2024-10-24 23:33:27,808 INFO L175 Difference]: Start difference. First operand has 216 places, 266 transitions, 4832 flow. Second operand 9 states and 265 transitions. [2024-10-24 23:33:27,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 449 transitions, 8090 flow [2024-10-24 23:33:27,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 449 transitions, 7920 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-10-24 23:33:27,889 INFO L231 Difference]: Finished difference. Result has 215 places, 258 transitions, 4494 flow [2024-10-24 23:33:27,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4494, PETRI_PLACES=215, PETRI_TRANSITIONS=258} [2024-10-24 23:33:27,890 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 168 predicate places. [2024-10-24 23:33:27,890 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 258 transitions, 4494 flow [2024-10-24 23:33:27,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:27,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:27,890 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:27,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 23:33:28,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-24 23:33:28,091 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:28,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:28,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1530145736, now seen corresponding path program 1 times [2024-10-24 23:33:28,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:28,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480526567] [2024-10-24 23:33:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:28,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:28,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480526567] [2024-10-24 23:33:28,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480526567] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:28,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050566110] [2024-10-24 23:33:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:28,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:28,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:28,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:33:28,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:33:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:28,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 23:33:28,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:28,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-24 23:33:28,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-10-24 23:33:30,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-10-24 23:33:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:30,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:33:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:34,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050566110] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:33:34,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:33:34,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 22 [2024-10-24 23:33:34,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341002326] [2024-10-24 23:33:34,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:33:34,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 23:33:34,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:34,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 23:33:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=416, Unknown=6, NotChecked=0, Total=552 [2024-10-24 23:33:35,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:33:38,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:33:38,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-24 23:33:38,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 258 transitions, 4494 flow. Second operand has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:38,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:33:38,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-24 23:33:38,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:33:47,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 23:33:50,911 INFO L124 PetriNetUnfolderBase]: 1959/4540 cut-off events. [2024-10-24 23:33:50,911 INFO L125 PetriNetUnfolderBase]: For 66106/66289 co-relation queries the response was YES. [2024-10-24 23:33:50,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24667 conditions, 4540 events. 1959/4540 cut-off events. For 66106/66289 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 30696 event pairs, 644 based on Foata normal form. 208/4647 useless extension candidates. Maximal degree in co-relation 24477. Up to 2548 conditions per place. [2024-10-24 23:33:50,954 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 314 selfloop transitions, 167 changer transitions 0/493 dead transitions. [2024-10-24 23:33:50,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 493 transitions, 7981 flow [2024-10-24 23:33:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-24 23:33:50,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-24 23:33:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 551 transitions. [2024-10-24 23:33:50,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46893617021276596 [2024-10-24 23:33:50,955 INFO L175 Difference]: Start difference. First operand has 215 places, 258 transitions, 4494 flow. Second operand 25 states and 551 transitions. [2024-10-24 23:33:50,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 493 transitions, 7981 flow [2024-10-24 23:33:51,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 493 transitions, 7746 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-10-24 23:33:51,064 INFO L231 Difference]: Finished difference. Result has 243 places, 326 transitions, 6069 flow [2024-10-24 23:33:51,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4129, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6069, PETRI_PLACES=243, PETRI_TRANSITIONS=326} [2024-10-24 23:33:51,064 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 196 predicate places. [2024-10-24 23:33:51,064 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 326 transitions, 6069 flow [2024-10-24 23:33:51,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:33:51,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:33:51,065 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:33:51,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:33:51,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:51,265 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:33:51,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:33:51,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1185225914, now seen corresponding path program 1 times [2024-10-24 23:33:51,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:33:51,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516166608] [2024-10-24 23:33:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:51,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:33:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:51,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:33:51,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516166608] [2024-10-24 23:33:51,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516166608] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:33:51,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028714940] [2024-10-24 23:33:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:33:51,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:33:51,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:51,454 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:33:51,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:33:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:33:51,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 23:33:51,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:33:51,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-24 23:33:51,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-10-24 23:33:53,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-10-24 23:33:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:53,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:33:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:33:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028714940] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:33:58,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:33:58,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 22 [2024-10-24 23:33:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994542242] [2024-10-24 23:33:58,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:33:58,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 23:33:58,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:33:58,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 23:33:58,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=415, Unknown=7, NotChecked=0, Total=552 [2024-10-24 23:34:02,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-24 23:34:02,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 326 transitions, 6069 flow. Second operand has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:02,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:02,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-24 23:34:02,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:10,411 INFO L124 PetriNetUnfolderBase]: 2052/4532 cut-off events. [2024-10-24 23:34:10,411 INFO L125 PetriNetUnfolderBase]: For 72955/73372 co-relation queries the response was YES. [2024-10-24 23:34:10,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26611 conditions, 4532 events. 2052/4532 cut-off events. For 72955/73372 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 30405 event pairs, 662 based on Foata normal form. 283/4777 useless extension candidates. Maximal degree in co-relation 26413. Up to 2793 conditions per place. [2024-10-24 23:34:10,448 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 369 selfloop transitions, 208 changer transitions 0/590 dead transitions. [2024-10-24 23:34:10,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 590 transitions, 10973 flow [2024-10-24 23:34:10,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-24 23:34:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-24 23:34:10,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 537 transitions. [2024-10-24 23:34:10,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4570212765957447 [2024-10-24 23:34:10,450 INFO L175 Difference]: Start difference. First operand has 243 places, 326 transitions, 6069 flow. Second operand 25 states and 537 transitions. [2024-10-24 23:34:10,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 590 transitions, 10973 flow [2024-10-24 23:34:10,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 590 transitions, 9883 flow, removed 350 selfloop flow, removed 12 redundant places. [2024-10-24 23:34:10,587 INFO L231 Difference]: Finished difference. Result has 265 places, 425 transitions, 8109 flow [2024-10-24 23:34:10,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5108, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8109, PETRI_PLACES=265, PETRI_TRANSITIONS=425} [2024-10-24 23:34:10,588 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 218 predicate places. [2024-10-24 23:34:10,588 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 425 transitions, 8109 flow [2024-10-24 23:34:10,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:10,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:10,588 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:10,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 23:34:10,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:10,789 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:34:10,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2083402850, now seen corresponding path program 1 times [2024-10-24 23:34:10,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:10,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430535085] [2024-10-24 23:34:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:10,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:34:10,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:10,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430535085] [2024-10-24 23:34:10,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430535085] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:34:10,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984583061] [2024-10-24 23:34:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:10,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:10,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:34:10,844 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:34:10,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:34:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:10,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:34:10,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:34:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:34:10,967 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:34:10,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984583061] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:10,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:34:10,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:34:10,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663929087] [2024-10-24 23:34:10,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:10,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:34:10,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:10,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:34:10,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:34:10,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:34:10,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 425 transitions, 8109 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:10,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:10,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:34:10,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:11,683 INFO L124 PetriNetUnfolderBase]: 1493/3573 cut-off events. [2024-10-24 23:34:11,683 INFO L125 PetriNetUnfolderBase]: For 57167/57386 co-relation queries the response was YES. [2024-10-24 23:34:11,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21523 conditions, 3573 events. 1493/3573 cut-off events. For 57167/57386 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 24333 event pairs, 339 based on Foata normal form. 181/3735 useless extension candidates. Maximal degree in co-relation 21320. Up to 1232 conditions per place. [2024-10-24 23:34:11,709 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 507 selfloop transitions, 17 changer transitions 0/545 dead transitions. [2024-10-24 23:34:11,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 545 transitions, 10446 flow [2024-10-24 23:34:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:34:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:34:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-10-24 23:34:11,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6914893617021277 [2024-10-24 23:34:11,710 INFO L175 Difference]: Start difference. First operand has 265 places, 425 transitions, 8109 flow. Second operand 6 states and 195 transitions. [2024-10-24 23:34:11,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 545 transitions, 10446 flow [2024-10-24 23:34:11,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 545 transitions, 9506 flow, removed 367 selfloop flow, removed 8 redundant places. [2024-10-24 23:34:11,837 INFO L231 Difference]: Finished difference. Result has 261 places, 424 transitions, 7311 flow [2024-10-24 23:34:11,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7277, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7311, PETRI_PLACES=261, PETRI_TRANSITIONS=424} [2024-10-24 23:34:11,837 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 214 predicate places. [2024-10-24 23:34:11,837 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 424 transitions, 7311 flow [2024-10-24 23:34:11,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:11,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:11,838 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:11,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 23:34:12,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:12,038 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:34:12,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:12,039 INFO L85 PathProgramCache]: Analyzing trace with hash 139343276, now seen corresponding path program 1 times [2024-10-24 23:34:12,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:12,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049955128] [2024-10-24 23:34:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:12,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:34:12,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:12,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049955128] [2024-10-24 23:34:12,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049955128] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:34:12,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431808579] [2024-10-24 23:34:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:12,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:12,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:34:12,101 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:34:12,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:34:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:12,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:34:12,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:34:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:34:12,222 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:34:12,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431808579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:12,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:34:12,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:34:12,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656508457] [2024-10-24 23:34:12,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:12,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:34:12,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:12,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:34:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:34:12,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:34:12,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 424 transitions, 7311 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:12,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:12,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:34:12,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:12,914 INFO L124 PetriNetUnfolderBase]: 1474/3513 cut-off events. [2024-10-24 23:34:12,914 INFO L125 PetriNetUnfolderBase]: For 49562/49930 co-relation queries the response was YES. [2024-10-24 23:34:12,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20368 conditions, 3513 events. 1474/3513 cut-off events. For 49562/49930 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 23463 event pairs, 294 based on Foata normal form. 253/3737 useless extension candidates. Maximal degree in co-relation 20167. Up to 1573 conditions per place. [2024-10-24 23:34:12,942 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 501 selfloop transitions, 19 changer transitions 0/539 dead transitions. [2024-10-24 23:34:12,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 539 transitions, 9874 flow [2024-10-24 23:34:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:34:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:34:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-10-24 23:34:12,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6205673758865248 [2024-10-24 23:34:12,943 INFO L175 Difference]: Start difference. First operand has 261 places, 424 transitions, 7311 flow. Second operand 6 states and 175 transitions. [2024-10-24 23:34:12,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 539 transitions, 9874 flow [2024-10-24 23:34:13,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 539 transitions, 9789 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:34:13,066 INFO L231 Difference]: Finished difference. Result has 260 places, 422 transitions, 7317 flow [2024-10-24 23:34:13,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7279, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7317, PETRI_PLACES=260, PETRI_TRANSITIONS=422} [2024-10-24 23:34:13,066 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 213 predicate places. [2024-10-24 23:34:13,067 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 422 transitions, 7317 flow [2024-10-24 23:34:13,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:13,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:13,067 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:13,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 23:34:13,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-24 23:34:13,268 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:34:13,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash -160978597, now seen corresponding path program 1 times [2024-10-24 23:34:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:13,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887011078] [2024-10-24 23:34:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-24 23:34:13,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:13,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887011078] [2024-10-24 23:34:13,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887011078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:13,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:34:13,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:34:13,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543407978] [2024-10-24 23:34:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:13,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:34:13,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:13,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:34:13,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:34:13,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 23:34:13,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 422 transitions, 7317 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:13,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:13,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 23:34:13,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:13,898 INFO L124 PetriNetUnfolderBase]: 1439/3485 cut-off events. [2024-10-24 23:34:13,898 INFO L125 PetriNetUnfolderBase]: For 48841/49066 co-relation queries the response was YES. [2024-10-24 23:34:13,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20379 conditions, 3485 events. 1439/3485 cut-off events. For 48841/49066 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 23664 event pairs, 419 based on Foata normal form. 161/3625 useless extension candidates. Maximal degree in co-relation 20178. Up to 2096 conditions per place. [2024-10-24 23:34:13,924 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 465 selfloop transitions, 21 changer transitions 0/505 dead transitions. [2024-10-24 23:34:13,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 505 transitions, 9229 flow [2024-10-24 23:34:13,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:34:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:34:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-10-24 23:34:13,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-10-24 23:34:13,925 INFO L175 Difference]: Start difference. First operand has 260 places, 422 transitions, 7317 flow. Second operand 4 states and 126 transitions. [2024-10-24 23:34:13,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 505 transitions, 9229 flow [2024-10-24 23:34:14,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 505 transitions, 9136 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-24 23:34:14,049 INFO L231 Difference]: Finished difference. Result has 258 places, 422 transitions, 7331 flow [2024-10-24 23:34:14,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7271, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=7331, PETRI_PLACES=258, PETRI_TRANSITIONS=422} [2024-10-24 23:34:14,049 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 211 predicate places. [2024-10-24 23:34:14,049 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 422 transitions, 7331 flow [2024-10-24 23:34:14,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:14,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:14,050 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:14,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-24 23:34:14,050 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:34:14,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1604864296, now seen corresponding path program 1 times [2024-10-24 23:34:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:14,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308552941] [2024-10-24 23:34:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:14,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:34:14,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:14,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308552941] [2024-10-24 23:34:14,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308552941] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:34:14,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220253383] [2024-10-24 23:34:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:14,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:14,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:34:14,461 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:34:14,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 23:34:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:14,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-24 23:34:14,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:34:14,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 23:34:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-10-24 23:34:14,664 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:34:14,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220253383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:14,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:34:14,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 19 [2024-10-24 23:34:14,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243938243] [2024-10-24 23:34:14,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:14,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:34:14,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:34:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:34:14,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-24 23:34:14,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 422 transitions, 7331 flow. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:14,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:14,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-24 23:34:14,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:15,453 INFO L124 PetriNetUnfolderBase]: 1564/3733 cut-off events. [2024-10-24 23:34:15,453 INFO L125 PetriNetUnfolderBase]: For 51915/52195 co-relation queries the response was YES. [2024-10-24 23:34:15,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22104 conditions, 3733 events. 1564/3733 cut-off events. For 51915/52195 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 25869 event pairs, 404 based on Foata normal form. 160/3859 useless extension candidates. Maximal degree in co-relation 21905. Up to 1850 conditions per place. [2024-10-24 23:34:15,480 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 563 selfloop transitions, 26 changer transitions 0/608 dead transitions. [2024-10-24 23:34:15,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 608 transitions, 10970 flow [2024-10-24 23:34:15,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 23:34:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 23:34:15,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-10-24 23:34:15,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.598404255319149 [2024-10-24 23:34:15,481 INFO L175 Difference]: Start difference. First operand has 258 places, 422 transitions, 7331 flow. Second operand 8 states and 225 transitions. [2024-10-24 23:34:15,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 608 transitions, 10970 flow [2024-10-24 23:34:15,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 608 transitions, 10854 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:34:15,608 INFO L231 Difference]: Finished difference. Result has 268 places, 434 transitions, 7477 flow [2024-10-24 23:34:15,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7299, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7477, PETRI_PLACES=268, PETRI_TRANSITIONS=434} [2024-10-24 23:34:15,609 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 221 predicate places. [2024-10-24 23:34:15,609 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 434 transitions, 7477 flow [2024-10-24 23:34:15,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:15,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:15,609 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:15,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 23:34:15,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-24 23:34:15,810 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:34:15,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:15,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1618849188, now seen corresponding path program 1 times [2024-10-24 23:34:15,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:15,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261892005] [2024-10-24 23:34:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:15,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:34:16,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:16,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261892005] [2024-10-24 23:34:16,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261892005] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:34:16,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682199239] [2024-10-24 23:34:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:16,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:34:16,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:34:16,171 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:34:16,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 23:34:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:16,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-24 23:34:16,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:34:16,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-24 23:34:16,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2024-10-24 23:34:16,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 32 [2024-10-24 23:34:16,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2024-10-24 23:34:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:34:16,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:34:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:34:21,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682199239] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:34:21,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:34:21,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 33 [2024-10-24 23:34:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915977751] [2024-10-24 23:34:21,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:34:21,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-24 23:34:21,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-24 23:34:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1032, Unknown=1, NotChecked=0, Total=1190 [2024-10-24 23:34:26,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:34:26,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-10-24 23:34:26,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 434 transitions, 7477 flow. Second operand has 35 states, 35 states have (on average 12.114285714285714) internal successors, (424), 35 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:26,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:26,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-10-24 23:34:26,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand