./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:58:26,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:58:26,532 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:58:26,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:58:26,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:58:26,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:58:26,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:58:26,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:58:26,561 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:58:26,561 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:58:26,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:58:26,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:58:26,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:58:26,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:58:26,566 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:58:26,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:58:26,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:58:26,567 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:58:26,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:58:26,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:58:26,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:58:26,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:58:26,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:58:26,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:58:26,573 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:58:26,573 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:58:26,573 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:58:26,573 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:58:26,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:58:26,574 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:58:26,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:58:26,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:58:26,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:58:26,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:58:26,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:58:26,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:58:26,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:58:26,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:58:26,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:58:26,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:58:26,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:58:26,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:58:26,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:58:26,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:58:26,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2024-11-19 13:58:26,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:58:26,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:58:26,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:58:26,820 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:58:26,820 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:58:26,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-11-19 13:58:28,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:58:28,541 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:58:28,542 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-11-19 13:58:28,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32967444/f73c72cf67514e29b1525e58d8c21845/FLAG8035eba4e [2024-11-19 13:58:28,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32967444/f73c72cf67514e29b1525e58d8c21845 [2024-11-19 13:58:28,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:58:28,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:58:28,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:58:28,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:58:28,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:58:28,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:58:28" (1/1) ... [2024-11-19 13:58:28,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d2b5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:28, skipping insertion in model container [2024-11-19 13:58:28,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:58:28" (1/1) ... [2024-11-19 13:58:28,627 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:58:28,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:58:29,011 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:58:29,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:58:29,108 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:58:29,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29 WrapperNode [2024-11-19 13:58:29,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:58:29,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:58:29,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:58:29,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:58:29,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,156 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 109 [2024-11-19 13:58:29,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:58:29,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:58:29,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:58:29,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:58:29,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,172 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,189 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-19 13:58:29,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:58:29,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:58:29,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:58:29,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:58:29,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (1/1) ... [2024-11-19 13:58:29,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:58:29,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:29,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 13:58:29,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 13:58:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-19 13:58:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-19 13:58:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:58:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:58:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:58:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:58:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:58:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:58:29,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:58:29,327 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:58:29,457 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:58:29,458 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:58:29,642 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:58:29,642 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:58:29,779 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:58:29,780 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 13:58:29,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:58:29 BoogieIcfgContainer [2024-11-19 13:58:29,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:58:29,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:58:29,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:58:29,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:58:29,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:58:28" (1/3) ... [2024-11-19 13:58:29,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b93f3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:58:29, skipping insertion in model container [2024-11-19 13:58:29,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:29" (2/3) ... [2024-11-19 13:58:29,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b93f3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:58:29, skipping insertion in model container [2024-11-19 13:58:29,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:58:29" (3/3) ... [2024-11-19 13:58:29,792 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2024-11-19 13:58:29,808 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:58:29,809 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-19 13:58:29,809 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:58:29,863 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:58:29,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 38 transitions, 80 flow [2024-11-19 13:58:29,932 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2024-11-19 13:58:29,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:58:29,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 5/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-19 13:58:29,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 38 transitions, 80 flow [2024-11-19 13:58:29,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 37 transitions, 77 flow [2024-11-19 13:58:29,954 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:58:29,964 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;@6f67e55f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:58:29,964 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-19 13:58:29,977 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:58:29,977 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2024-11-19 13:58:29,978 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:58:29,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:29,978 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:29,979 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:29,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:29,985 INFO L85 PathProgramCache]: Analyzing trace with hash -178405112, now seen corresponding path program 1 times [2024-11-19 13:58:29,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:29,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971502207] [2024-11-19 13:58:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:29,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:30,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:30,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971502207] [2024-11-19 13:58:30,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971502207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:58:30,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:58:30,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:58:30,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725389120] [2024-11-19 13:58:30,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:58:30,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:58:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:58:30,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:58:30,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-11-19 13:58:30,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:30,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:30,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-11-19 13:58:30,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:30,547 INFO L124 PetriNetUnfolderBase]: 184/403 cut-off events. [2024-11-19 13:58:30,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:58:30,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 403 events. 184/403 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1793 event pairs, 14 based on Foata normal form. 4/335 useless extension candidates. Maximal degree in co-relation 729. Up to 222 conditions per place. [2024-11-19 13:58:30,553 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 44 selfloop transitions, 8 changer transitions 1/66 dead transitions. [2024-11-19 13:58:30,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 66 transitions, 241 flow [2024-11-19 13:58:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:58:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:58:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-19 13:58:30,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6947368421052632 [2024-11-19 13:58:30,566 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 77 flow. Second operand 5 states and 132 transitions. [2024-11-19 13:58:30,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 66 transitions, 241 flow [2024-11-19 13:58:30,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:58:30,574 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 142 flow [2024-11-19 13:58:30,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2024-11-19 13:58:30,581 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2024-11-19 13:58:30,581 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 142 flow [2024-11-19 13:58:30,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:30,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:30,581 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:30,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:58:30,582 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:30,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1615907721, now seen corresponding path program 1 times [2024-11-19 13:58:30,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:30,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090126296] [2024-11-19 13:58:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:30,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:30,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090126296] [2024-11-19 13:58:30,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090126296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:58:30,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:58:30,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:58:30,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932951809] [2024-11-19 13:58:30,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:58:30,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:58:30,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:30,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:58:30,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:58:30,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-19 13:58:30,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:30,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:30,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-19 13:58:30,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:30,892 INFO L124 PetriNetUnfolderBase]: 212/481 cut-off events. [2024-11-19 13:58:30,892 INFO L125 PetriNetUnfolderBase]: For 248/250 co-relation queries the response was YES. [2024-11-19 13:58:30,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 481 events. 212/481 cut-off events. For 248/250 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2223 event pairs, 43 based on Foata normal form. 11/463 useless extension candidates. Maximal degree in co-relation 1134. Up to 285 conditions per place. [2024-11-19 13:58:30,901 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 53 selfloop transitions, 4 changer transitions 1/72 dead transitions. [2024-11-19 13:58:30,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 72 transitions, 356 flow [2024-11-19 13:58:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:58:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:58:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-19 13:58:30,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2024-11-19 13:58:30,905 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 142 flow. Second operand 4 states and 110 transitions. [2024-11-19 13:58:30,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 72 transitions, 356 flow [2024-11-19 13:58:30,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 72 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:58:30,909 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 182 flow [2024-11-19 13:58:30,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-11-19 13:58:30,910 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-11-19 13:58:30,910 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 182 flow [2024-11-19 13:58:30,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:30,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:30,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:30,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:58:30,912 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:30,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash 567489290, now seen corresponding path program 1 times [2024-11-19 13:58:30,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:30,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527523258] [2024-11-19 13:58:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:30,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527523258] [2024-11-19 13:58:31,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527523258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:58:31,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:58:31,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:58:31,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77158725] [2024-11-19 13:58:31,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:58:31,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:58:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:31,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:58:31,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:58:31,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-19 13:58:31,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:31,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:31,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-19 13:58:31,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:31,155 INFO L124 PetriNetUnfolderBase]: 96/281 cut-off events. [2024-11-19 13:58:31,155 INFO L125 PetriNetUnfolderBase]: For 211/219 co-relation queries the response was YES. [2024-11-19 13:58:31,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 281 events. 96/281 cut-off events. For 211/219 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1201 event pairs, 27 based on Foata normal form. 11/283 useless extension candidates. Maximal degree in co-relation 662. Up to 110 conditions per place. [2024-11-19 13:58:31,158 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 28 selfloop transitions, 5 changer transitions 3/52 dead transitions. [2024-11-19 13:58:31,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 272 flow [2024-11-19 13:58:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:58:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:58:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-19 13:58:31,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-11-19 13:58:31,161 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 182 flow. Second operand 3 states and 80 transitions. [2024-11-19 13:58:31,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 272 flow [2024-11-19 13:58:31,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:58:31,164 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 150 flow [2024-11-19 13:58:31,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-19 13:58:31,165 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-11-19 13:58:31,165 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 150 flow [2024-11-19 13:58:31,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:31,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:31,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:31,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:58:31,167 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:31,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1190566207, now seen corresponding path program 1 times [2024-11-19 13:58:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:31,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207353552] [2024-11-19 13:58:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:31,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:31,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207353552] [2024-11-19 13:58:31,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207353552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:58:31,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:58:31,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:58:31,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571569707] [2024-11-19 13:58:31,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:58:31,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:58:31,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:31,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:58:31,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:58:31,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-19 13:58:31,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:31,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:31,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-19 13:58:31,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:31,366 INFO L124 PetriNetUnfolderBase]: 131/354 cut-off events. [2024-11-19 13:58:31,367 INFO L125 PetriNetUnfolderBase]: For 232/245 co-relation queries the response was YES. [2024-11-19 13:58:31,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 354 events. 131/354 cut-off events. For 232/245 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1451 event pairs, 46 based on Foata normal form. 12/350 useless extension candidates. Maximal degree in co-relation 881. Up to 153 conditions per place. [2024-11-19 13:58:31,371 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-11-19 13:58:31,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 326 flow [2024-11-19 13:58:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:58:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:58:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-19 13:58:31,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2024-11-19 13:58:31,373 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 150 flow. Second operand 4 states and 93 transitions. [2024-11-19 13:58:31,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 326 flow [2024-11-19 13:58:31,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:58:31,378 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 176 flow [2024-11-19 13:58:31,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-11-19 13:58:31,379 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2024-11-19 13:58:31,380 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 176 flow [2024-11-19 13:58:31,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:31,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:31,381 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:31,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:58:31,381 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:31,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1747153623, now seen corresponding path program 1 times [2024-11-19 13:58:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:31,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081915031] [2024-11-19 13:58:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:31,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:31,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081915031] [2024-11-19 13:58:31,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081915031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:58:31,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:58:31,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:58:31,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519249399] [2024-11-19 13:58:31,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:58:31,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:58:31,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:58:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:58:31,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-19 13:58:31,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:31,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:31,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-19 13:58:31,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:31,686 INFO L124 PetriNetUnfolderBase]: 176/442 cut-off events. [2024-11-19 13:58:31,687 INFO L125 PetriNetUnfolderBase]: For 493/505 co-relation queries the response was YES. [2024-11-19 13:58:31,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 442 events. 176/442 cut-off events. For 493/505 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1724 event pairs, 36 based on Foata normal form. 9/451 useless extension candidates. Maximal degree in co-relation 1169. Up to 217 conditions per place. [2024-11-19 13:58:31,691 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 49 selfloop transitions, 11 changer transitions 7/76 dead transitions. [2024-11-19 13:58:31,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 457 flow [2024-11-19 13:58:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 13:58:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 13:58:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-11-19 13:58:31,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-11-19 13:58:31,693 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 176 flow. Second operand 8 states and 154 transitions. [2024-11-19 13:58:31,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 457 flow [2024-11-19 13:58:31,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:58:31,699 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 249 flow [2024-11-19 13:58:31,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-11-19 13:58:31,701 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-11-19 13:58:31,702 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 249 flow [2024-11-19 13:58:31,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:31,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:31,703 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:31,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:58:31,703 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:31,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:31,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1753422616, now seen corresponding path program 1 times [2024-11-19 13:58:31,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:31,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546434899] [2024-11-19 13:58:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:31,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:31,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546434899] [2024-11-19 13:58:31,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546434899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880007047] [2024-11-19 13:58:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:31,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:31,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:31,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:31,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:58:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:31,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:58:31,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:31,951 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:58:31,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880007047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:58:31,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:58:31,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:58:31,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902202724] [2024-11-19 13:58:31,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:58:31,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:58:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:31,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:58:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:58:31,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-19 13:58:31,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:31,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:31,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-19 13:58:31,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:32,151 INFO L124 PetriNetUnfolderBase]: 210/557 cut-off events. [2024-11-19 13:58:32,151 INFO L125 PetriNetUnfolderBase]: For 912/919 co-relation queries the response was YES. [2024-11-19 13:58:32,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 557 events. 210/557 cut-off events. For 912/919 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2319 event pairs, 49 based on Foata normal form. 15/572 useless extension candidates. Maximal degree in co-relation 1546. Up to 180 conditions per place. [2024-11-19 13:58:32,155 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 63 selfloop transitions, 21 changer transitions 3/97 dead transitions. [2024-11-19 13:58:32,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 663 flow [2024-11-19 13:58:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 13:58:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 13:58:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2024-11-19 13:58:32,157 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-11-19 13:58:32,157 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 249 flow. Second operand 10 states and 210 transitions. [2024-11-19 13:58:32,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 663 flow [2024-11-19 13:58:32,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 649 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 13:58:32,163 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 424 flow [2024-11-19 13:58:32,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=424, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-11-19 13:58:32,164 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-11-19 13:58:32,164 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 424 flow [2024-11-19 13:58:32,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:32,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:32,164 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:32,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 13:58:32,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 13:58:32,370 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:32,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:32,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1478474113, now seen corresponding path program 1 times [2024-11-19 13:58:32,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:32,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255668501] [2024-11-19 13:58:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:32,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 13:58:32,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:32,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255668501] [2024-11-19 13:58:32,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255668501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:58:32,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:58:32,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:58:32,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379809610] [2024-11-19 13:58:32,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:58:32,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:58:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:58:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:58:32,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-19 13:58:32,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:32,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:32,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-19 13:58:32,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:32,517 INFO L124 PetriNetUnfolderBase]: 205/546 cut-off events. [2024-11-19 13:58:32,517 INFO L125 PetriNetUnfolderBase]: For 1801/1810 co-relation queries the response was YES. [2024-11-19 13:58:32,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 546 events. 205/546 cut-off events. For 1801/1810 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2213 event pairs, 82 based on Foata normal form. 16/558 useless extension candidates. Maximal degree in co-relation 1749. Up to 310 conditions per place. [2024-11-19 13:58:32,522 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 45 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-11-19 13:58:32,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 609 flow [2024-11-19 13:58:32,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:58:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:58:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-19 13:58:32,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 13:58:32,523 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 424 flow. Second operand 3 states and 76 transitions. [2024-11-19 13:58:32,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 609 flow [2024-11-19 13:58:32,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 584 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 13:58:32,531 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 430 flow [2024-11-19 13:58:32,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-11-19 13:58:32,532 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-11-19 13:58:32,533 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 430 flow [2024-11-19 13:58:32,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:32,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:32,533 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:32,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 13:58:32,534 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:32,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:32,535 INFO L85 PathProgramCache]: Analyzing trace with hash 333015127, now seen corresponding path program 1 times [2024-11-19 13:58:32,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:32,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343181188] [2024-11-19 13:58:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:32,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:32,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:32,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343181188] [2024-11-19 13:58:32,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343181188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:32,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341857198] [2024-11-19 13:58:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:32,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:32,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:32,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:32,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:58:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:32,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:58:32,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:32,771 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:58:32,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341857198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:58:32,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:58:32,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:58:32,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817734750] [2024-11-19 13:58:32,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:58:32,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:58:32,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:32,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:58:32,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:58:32,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-19 13:58:32,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:32,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:32,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-19 13:58:32,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:32,969 INFO L124 PetriNetUnfolderBase]: 221/556 cut-off events. [2024-11-19 13:58:32,969 INFO L125 PetriNetUnfolderBase]: For 2070/2070 co-relation queries the response was YES. [2024-11-19 13:58:32,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 556 events. 221/556 cut-off events. For 2070/2070 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2219 event pairs, 17 based on Foata normal form. 18/556 useless extension candidates. Maximal degree in co-relation 1877. Up to 237 conditions per place. [2024-11-19 13:58:32,974 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 68 selfloop transitions, 12 changer transitions 5/97 dead transitions. [2024-11-19 13:58:32,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 878 flow [2024-11-19 13:58:32,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:58:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:58:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-11-19 13:58:32,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6535087719298246 [2024-11-19 13:58:32,975 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 430 flow. Second operand 6 states and 149 transitions. [2024-11-19 13:58:32,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 878 flow [2024-11-19 13:58:32,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 864 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 13:58:32,982 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 436 flow [2024-11-19 13:58:32,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-11-19 13:58:32,983 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2024-11-19 13:58:32,983 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 436 flow [2024-11-19 13:58:32,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:32,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:32,984 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 13:58:33,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 13:58:33,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-19 13:58:33,184 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:33,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1733534688, now seen corresponding path program 1 times [2024-11-19 13:58:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934425256] [2024-11-19 13:58:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:33,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:33,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:33,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934425256] [2024-11-19 13:58:33,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934425256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:33,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623819621] [2024-11-19 13:58:33,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:33,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:33,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:33,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:33,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 13:58:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:33,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:58:33,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:33,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:58:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:33,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623819621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:58:33,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:58:33,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 13:58:33,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025818934] [2024-11-19 13:58:33,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:58:33,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:58:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:58:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:58:33,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-19 13:58:33,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 436 flow. Second operand has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:33,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:33,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-19 13:58:33,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:33,809 INFO L124 PetriNetUnfolderBase]: 476/1163 cut-off events. [2024-11-19 13:58:33,809 INFO L125 PetriNetUnfolderBase]: For 4991/4991 co-relation queries the response was YES. [2024-11-19 13:58:33,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4207 conditions, 1163 events. 476/1163 cut-off events. For 4991/4991 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5727 event pairs, 47 based on Foata normal form. 45/1208 useless extension candidates. Maximal degree in co-relation 4175. Up to 374 conditions per place. [2024-11-19 13:58:33,818 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 131 selfloop transitions, 21 changer transitions 22/186 dead transitions. [2024-11-19 13:58:33,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 186 transitions, 1773 flow [2024-11-19 13:58:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 13:58:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 13:58:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-11-19 13:58:33,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7026315789473684 [2024-11-19 13:58:33,820 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 436 flow. Second operand 10 states and 267 transitions. [2024-11-19 13:58:33,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 186 transitions, 1773 flow [2024-11-19 13:58:33,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 186 transitions, 1748 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 13:58:33,833 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 678 flow [2024-11-19 13:58:33,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=678, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-11-19 13:58:33,835 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2024-11-19 13:58:33,835 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 678 flow [2024-11-19 13:58:33,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:33,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:33,836 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:33,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 13:58:34,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:34,037 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:34,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:34,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2043242043, now seen corresponding path program 1 times [2024-11-19 13:58:34,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:34,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604099448] [2024-11-19 13:58:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:34,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:34,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:34,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604099448] [2024-11-19 13:58:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604099448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:58:34,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:58:34,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 13:58:34,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698286342] [2024-11-19 13:58:34,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:58:34,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:58:34,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:34,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:58:34,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:58:34,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-19 13:58:34,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:34,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:34,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-19 13:58:34,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:34,452 INFO L124 PetriNetUnfolderBase]: 560/1342 cut-off events. [2024-11-19 13:58:34,453 INFO L125 PetriNetUnfolderBase]: For 8717/8724 co-relation queries the response was YES. [2024-11-19 13:58:34,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5332 conditions, 1342 events. 560/1342 cut-off events. For 8717/8724 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6867 event pairs, 51 based on Foata normal form. 36/1373 useless extension candidates. Maximal degree in co-relation 5295. Up to 461 conditions per place. [2024-11-19 13:58:34,465 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 74 selfloop transitions, 50 changer transitions 0/132 dead transitions. [2024-11-19 13:58:34,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 132 transitions, 1522 flow [2024-11-19 13:58:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 13:58:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 13:58:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-11-19 13:58:34,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-11-19 13:58:34,467 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 678 flow. Second operand 8 states and 146 transitions. [2024-11-19 13:58:34,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 132 transitions, 1522 flow [2024-11-19 13:58:34,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 1494 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 13:58:34,486 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 1143 flow [2024-11-19 13:58:34,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1143, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2024-11-19 13:58:34,488 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2024-11-19 13:58:34,488 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 1143 flow [2024-11-19 13:58:34,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:34,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:34,488 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:34,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:58:34,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:34,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:34,489 INFO L85 PathProgramCache]: Analyzing trace with hash 782469495, now seen corresponding path program 1 times [2024-11-19 13:58:34,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:34,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483627504] [2024-11-19 13:58:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:34,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:34,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:34,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483627504] [2024-11-19 13:58:34,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483627504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:34,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21862426] [2024-11-19 13:58:34,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:34,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:34,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:34,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:34,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 13:58:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:34,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 13:58:34,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:34,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:58:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:34,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21862426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:58:34,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:58:34,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-19 13:58:34,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493314740] [2024-11-19 13:58:34,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:58:34,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:58:34,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:34,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:58:34,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:58:34,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-19 13:58:34,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 1143 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 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) [2024-11-19 13:58:34,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:34,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-19 13:58:34,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:35,403 INFO L124 PetriNetUnfolderBase]: 667/1657 cut-off events. [2024-11-19 13:58:35,403 INFO L125 PetriNetUnfolderBase]: For 15803/15810 co-relation queries the response was YES. [2024-11-19 13:58:35,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1657 events. 667/1657 cut-off events. For 15803/15810 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8217 event pairs, 78 based on Foata normal form. 68/1720 useless extension candidates. Maximal degree in co-relation 7213. Up to 430 conditions per place. [2024-11-19 13:58:35,417 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 104 selfloop transitions, 87 changer transitions 31/230 dead transitions. [2024-11-19 13:58:35,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 230 transitions, 3012 flow [2024-11-19 13:58:35,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 13:58:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 13:58:35,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 352 transitions. [2024-11-19 13:58:35,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44110275689223055 [2024-11-19 13:58:35,419 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 1143 flow. Second operand 21 states and 352 transitions. [2024-11-19 13:58:35,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 230 transitions, 3012 flow [2024-11-19 13:58:35,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 230 transitions, 2813 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-11-19 13:58:35,447 INFO L231 Difference]: Finished difference. Result has 110 places, 126 transitions, 1855 flow [2024-11-19 13:58:35,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1855, PETRI_PLACES=110, PETRI_TRANSITIONS=126} [2024-11-19 13:58:35,448 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2024-11-19 13:58:35,448 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 126 transitions, 1855 flow [2024-11-19 13:58:35,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 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) [2024-11-19 13:58:35,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:35,449 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-19 13:58:35,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 13:58:35,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:35,653 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:35,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash -791151918, now seen corresponding path program 1 times [2024-11-19 13:58:35,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:35,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656307119] [2024-11-19 13:58:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:35,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 13:58:35,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:35,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656307119] [2024-11-19 13:58:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656307119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660772872] [2024-11-19 13:58:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:35,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:35,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:35,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:35,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 13:58:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:35,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 13:58:35,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 13:58:35,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:58:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 13:58:36,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660772872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:58:36,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:58:36,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-19 13:58:36,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546154952] [2024-11-19 13:58:36,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:58:36,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 13:58:36,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:36,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 13:58:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-19 13:58:36,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-19 13:58:36,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 1855 flow. Second operand has 18 states, 18 states have (on average 16.72222222222222) internal successors, (301), 18 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:36,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:36,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-19 13:58:36,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:36,712 INFO L124 PetriNetUnfolderBase]: 660/1764 cut-off events. [2024-11-19 13:58:36,712 INFO L125 PetriNetUnfolderBase]: For 17688/17695 co-relation queries the response was YES. [2024-11-19 13:58:36,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8242 conditions, 1764 events. 660/1764 cut-off events. For 17688/17695 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9282 event pairs, 230 based on Foata normal form. 8/1771 useless extension candidates. Maximal degree in co-relation 8196. Up to 931 conditions per place. [2024-11-19 13:58:36,728 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 205 selfloop transitions, 75 changer transitions 10/298 dead transitions. [2024-11-19 13:58:36,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 298 transitions, 3923 flow [2024-11-19 13:58:36,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 13:58:36,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-19 13:58:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 601 transitions. [2024-11-19 13:58:36,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5101867572156197 [2024-11-19 13:58:36,733 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 1855 flow. Second operand 31 states and 601 transitions. [2024-11-19 13:58:36,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 298 transitions, 3923 flow [2024-11-19 13:58:36,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 298 transitions, 3594 flow, removed 96 selfloop flow, removed 8 redundant places. [2024-11-19 13:58:36,770 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 2452 flow [2024-11-19 13:58:36,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2452, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2024-11-19 13:58:36,771 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 106 predicate places. [2024-11-19 13:58:36,771 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 2452 flow [2024-11-19 13:58:36,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.72222222222222) internal successors, (301), 18 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:36,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:36,772 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-19 13:58:36,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 13:58:36,972 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,SelfDestructingSolverStorable11 [2024-11-19 13:58:36,973 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:36,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:36,973 INFO L85 PathProgramCache]: Analyzing trace with hash 85625920, now seen corresponding path program 2 times [2024-11-19 13:58:36,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:36,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018876505] [2024-11-19 13:58:36,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:58:36,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:37,000 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:58:37,000 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:58:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:37,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:37,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018876505] [2024-11-19 13:58:37,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018876505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:37,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104354128] [2024-11-19 13:58:37,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:58:37,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:37,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:37,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 13:58:37,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:58:37,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:58:37,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 13:58:37,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:37,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:58:37,539 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:37,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104354128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:58:37,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:58:37,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-19 13:58:37,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808045446] [2024-11-19 13:58:37,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:58:37,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 13:58:37,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 13:58:37,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-19 13:58:37,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-19 13:58:37,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 2452 flow. Second operand has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:37,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:37,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-19 13:58:37,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:39,101 INFO L124 PetriNetUnfolderBase]: 1837/4646 cut-off events. [2024-11-19 13:58:39,101 INFO L125 PetriNetUnfolderBase]: For 46394/46394 co-relation queries the response was YES. [2024-11-19 13:58:39,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20986 conditions, 4646 events. 1837/4646 cut-off events. For 46394/46394 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 25462 event pairs, 101 based on Foata normal form. 215/4861 useless extension candidates. Maximal degree in co-relation 20930. Up to 661 conditions per place. [2024-11-19 13:58:39,139 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 531 selfloop transitions, 135 changer transitions 96/773 dead transitions. [2024-11-19 13:58:39,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 773 transitions, 11322 flow [2024-11-19 13:58:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 13:58:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 13:58:39,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 584 transitions. [2024-11-19 13:58:39,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6985645933014354 [2024-11-19 13:58:39,141 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 2452 flow. Second operand 22 states and 584 transitions. [2024-11-19 13:58:39,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 773 transitions, 11322 flow [2024-11-19 13:58:39,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 773 transitions, 11077 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-11-19 13:58:39,249 INFO L231 Difference]: Finished difference. Result has 169 places, 239 transitions, 4022 flow [2024-11-19 13:58:39,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4022, PETRI_PLACES=169, PETRI_TRANSITIONS=239} [2024-11-19 13:58:39,250 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 133 predicate places. [2024-11-19 13:58:39,250 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 239 transitions, 4022 flow [2024-11-19 13:58:39,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:39,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:39,251 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 7, 7, 7, 4, 1, 1, 1, 1] [2024-11-19 13:58:39,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 13:58:39,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:39,456 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:39,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:39,456 INFO L85 PathProgramCache]: Analyzing trace with hash 412335652, now seen corresponding path program 2 times [2024-11-19 13:58:39,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:39,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789766166] [2024-11-19 13:58:39,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:58:39,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:39,488 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:58:39,488 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:58:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-19 13:58:39,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:39,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789766166] [2024-11-19 13:58:39,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789766166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:39,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890359985] [2024-11-19 13:58:39,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:58:39,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:39,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:39,858 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:39,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 13:58:39,979 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:58:39,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:58:39,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 13:58:39,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-19 13:58:40,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:58:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-19 13:58:40,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890359985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:58:40,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:58:40,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-19 13:58:40,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895656929] [2024-11-19 13:58:40,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:58:40,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 13:58:40,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 13:58:40,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 13:58:40,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-19 13:58:40,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 239 transitions, 4022 flow. Second operand has 34 states, 34 states have (on average 16.558823529411764) internal successors, (563), 34 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:40,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:40,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-19 13:58:40,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:42,517 INFO L124 PetriNetUnfolderBase]: 1978/5172 cut-off events. [2024-11-19 13:58:42,518 INFO L125 PetriNetUnfolderBase]: For 61633/61634 co-relation queries the response was YES. [2024-11-19 13:58:42,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25135 conditions, 5172 events. 1978/5172 cut-off events. For 61633/61634 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 29682 event pairs, 834 based on Foata normal form. 16/5188 useless extension candidates. Maximal degree in co-relation 25069. Up to 2980 conditions per place. [2024-11-19 13:58:42,607 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 445 selfloop transitions, 151 changer transitions 26/630 dead transitions. [2024-11-19 13:58:42,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 630 transitions, 8937 flow [2024-11-19 13:58:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-19 13:58:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-11-19 13:58:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1291 transitions. [2024-11-19 13:58:42,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.507069913589945 [2024-11-19 13:58:42,611 INFO L175 Difference]: Start difference. First operand has 169 places, 239 transitions, 4022 flow. Second operand 67 states and 1291 transitions. [2024-11-19 13:58:42,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 630 transitions, 8937 flow [2024-11-19 13:58:42,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 630 transitions, 8538 flow, removed 139 selfloop flow, removed 9 redundant places. [2024-11-19 13:58:42,745 INFO L231 Difference]: Finished difference. Result has 244 places, 319 transitions, 5697 flow [2024-11-19 13:58:42,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3753, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=5697, PETRI_PLACES=244, PETRI_TRANSITIONS=319} [2024-11-19 13:58:42,746 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 208 predicate places. [2024-11-19 13:58:42,746 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 319 transitions, 5697 flow [2024-11-19 13:58:42,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 16.558823529411764) internal successors, (563), 34 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:42,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:42,747 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:42,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 13:58:42,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:42,948 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:42,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:42,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1698525685, now seen corresponding path program 1 times [2024-11-19 13:58:42,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:42,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146391159] [2024-11-19 13:58:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:42,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 208 proven. 37 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-19 13:58:43,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:43,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146391159] [2024-11-19 13:58:43,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146391159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:43,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077059966] [2024-11-19 13:58:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:58:43,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:43,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:43,169 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:43,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 13:58:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:58:43,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 13:58:43,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 208 proven. 32 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-19 13:58:43,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:58:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 208 proven. 32 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-19 13:58:43,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077059966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:58:43,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:58:43,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-11-19 13:58:43,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583217173] [2024-11-19 13:58:43,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:58:43,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 13:58:43,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 13:58:43,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-19 13:58:43,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-19 13:58:43,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 319 transitions, 5697 flow. Second operand has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:43,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:43,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-19 13:58:43,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:45,650 INFO L124 PetriNetUnfolderBase]: 3266/8681 cut-off events. [2024-11-19 13:58:45,650 INFO L125 PetriNetUnfolderBase]: For 107919/107936 co-relation queries the response was YES. [2024-11-19 13:58:45,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41469 conditions, 8681 events. 3266/8681 cut-off events. For 107919/107936 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 56884 event pairs, 611 based on Foata normal form. 132/8803 useless extension candidates. Maximal degree in co-relation 41382. Up to 2115 conditions per place. [2024-11-19 13:58:45,730 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 373 selfloop transitions, 331 changer transitions 18/730 dead transitions. [2024-11-19 13:58:45,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 730 transitions, 11847 flow [2024-11-19 13:58:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 13:58:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-19 13:58:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 614 transitions. [2024-11-19 13:58:45,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4366998577524893 [2024-11-19 13:58:45,732 INFO L175 Difference]: Start difference. First operand has 244 places, 319 transitions, 5697 flow. Second operand 37 states and 614 transitions. [2024-11-19 13:58:45,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 730 transitions, 11847 flow [2024-11-19 13:58:46,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 730 transitions, 11389 flow, removed 185 selfloop flow, removed 26 redundant places. [2024-11-19 13:58:46,082 INFO L231 Difference]: Finished difference. Result has 257 places, 503 transitions, 9272 flow [2024-11-19 13:58:46,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9272, PETRI_PLACES=257, PETRI_TRANSITIONS=503} [2024-11-19 13:58:46,082 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 221 predicate places. [2024-11-19 13:58:46,083 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 503 transitions, 9272 flow [2024-11-19 13:58:46,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:46,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:46,083 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:46,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 13:58:46,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 13:58:46,284 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:46,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1520693804, now seen corresponding path program 2 times [2024-11-19 13:58:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:46,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968834855] [2024-11-19 13:58:46,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:58:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:46,311 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:58:46,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:58:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 70 proven. 193 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-19 13:58:46,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:46,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968834855] [2024-11-19 13:58:46,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968834855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:46,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117769452] [2024-11-19 13:58:46,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:58:46,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:46,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:46,695 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:46,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 13:58:46,835 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:58:46,836 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:58:46,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 13:58:46,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 70 proven. 193 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-19 13:58:46,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:58:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 70 proven. 193 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-19 13:58:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117769452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:58:47,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:58:47,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-19 13:58:47,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923167590] [2024-11-19 13:58:47,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:58:47,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 13:58:47,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 13:58:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-11-19 13:58:47,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-19 13:58:47,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 503 transitions, 9272 flow. Second operand has 24 states, 24 states have (on average 14.75) internal successors, (354), 24 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:47,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:47,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-19 13:58:47,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:51,606 INFO L124 PetriNetUnfolderBase]: 5416/14575 cut-off events. [2024-11-19 13:58:51,606 INFO L125 PetriNetUnfolderBase]: For 207982/208015 co-relation queries the response was YES. [2024-11-19 13:58:51,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73804 conditions, 14575 events. 5416/14575 cut-off events. For 207982/208015 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 110608 event pairs, 563 based on Foata normal form. 108/14683 useless extension candidates. Maximal degree in co-relation 73710. Up to 2053 conditions per place. [2024-11-19 13:58:51,783 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 306 selfloop transitions, 844 changer transitions 17/1175 dead transitions. [2024-11-19 13:58:51,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1175 transitions, 21155 flow [2024-11-19 13:58:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-19 13:58:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-19 13:58:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 901 transitions. [2024-11-19 13:58:51,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4159741458910434 [2024-11-19 13:58:51,786 INFO L175 Difference]: Start difference. First operand has 257 places, 503 transitions, 9272 flow. Second operand 57 states and 901 transitions. [2024-11-19 13:58:51,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1175 transitions, 21155 flow [2024-11-19 13:58:52,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1175 transitions, 20756 flow, removed 114 selfloop flow, removed 8 redundant places. [2024-11-19 13:58:52,815 INFO L231 Difference]: Finished difference. Result has 309 places, 888 transitions, 18259 flow [2024-11-19 13:58:52,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8854, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=18259, PETRI_PLACES=309, PETRI_TRANSITIONS=888} [2024-11-19 13:58:52,816 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 273 predicate places. [2024-11-19 13:58:52,817 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 888 transitions, 18259 flow [2024-11-19 13:58:52,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.75) internal successors, (354), 24 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:52,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:52,817 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:52,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 13:58:53,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 13:58:53,018 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:58:53,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:53,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1551694118, now seen corresponding path program 3 times [2024-11-19 13:58:53,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:53,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859864802] [2024-11-19 13:58:53,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:58:53,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:53,082 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-19 13:58:53,083 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:58:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:53,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:53,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859864802] [2024-11-19 13:58:53,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859864802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:53,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998245621] [2024-11-19 13:58:53,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:58:53,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:53,611 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:53,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 13:58:53,752 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-19 13:58:53,752 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:58:53,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 13:58:53,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 40 proven. 340 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-19 13:58:54,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:58:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 40 proven. 340 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-19 13:58:54,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998245621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:58:54,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:58:54,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13, 13] total 48 [2024-11-19 13:58:54,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487435594] [2024-11-19 13:58:54,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:58:54,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-19 13:58:54,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:54,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-19 13:58:54,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1941, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 13:58:54,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-19 13:58:54,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 888 transitions, 18259 flow. Second operand has 48 states, 48 states have (on average 12.75) internal successors, (612), 48 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:58:54,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:54,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-19 13:58:54,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:59:24,367 INFO L124 PetriNetUnfolderBase]: 7840/20729 cut-off events. [2024-11-19 13:59:24,368 INFO L125 PetriNetUnfolderBase]: For 359218/359218 co-relation queries the response was YES. [2024-11-19 13:59:24,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111264 conditions, 20729 events. 7840/20729 cut-off events. For 359218/359218 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 166492 event pairs, 149 based on Foata normal form. 280/21009 useless extension candidates. Maximal degree in co-relation 111167. Up to 2935 conditions per place. [2024-11-19 13:59:24,585 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 2799 selfloop transitions, 2544 changer transitions 417/5767 dead transitions. [2024-11-19 13:59:24,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1096 places, 5767 transitions, 85630 flow [2024-11-19 13:59:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 788 states. [2024-11-19 13:59:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2024-11-19 13:59:24,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 11074 transitions. [2024-11-19 13:59:24,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36982367085225754 [2024-11-19 13:59:24,615 INFO L175 Difference]: Start difference. First operand has 309 places, 888 transitions, 18259 flow. Second operand 788 states and 11074 transitions. [2024-11-19 13:59:24,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1096 places, 5767 transitions, 85630 flow [2024-11-19 13:59:26,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1078 places, 5767 transitions, 84424 flow, removed 489 selfloop flow, removed 18 redundant places. [2024-11-19 13:59:26,084 INFO L231 Difference]: Finished difference. Result has 1209 places, 2682 transitions, 55769 flow [2024-11-19 13:59:26,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17952, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=797, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=788, PETRI_FLOW=55769, PETRI_PLACES=1209, PETRI_TRANSITIONS=2682} [2024-11-19 13:59:26,086 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 1173 predicate places. [2024-11-19 13:59:26,086 INFO L471 AbstractCegarLoop]: Abstraction has has 1209 places, 2682 transitions, 55769 flow [2024-11-19 13:59:26,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 12.75) internal successors, (612), 48 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:59:26,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:59:26,087 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1] [2024-11-19 13:59:26,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 13:59:26,288 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,SelfDestructingSolverStorable16 [2024-11-19 13:59:26,288 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-19 13:59:26,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:59:26,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2034195744, now seen corresponding path program 3 times [2024-11-19 13:59:26,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:59:26,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706154402] [2024-11-19 13:59:26,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:59:26,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:59:26,374 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-19 13:59:26,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:59:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:59:27,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:59:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706154402] [2024-11-19 13:59:27,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706154402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:59:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795045065] [2024-11-19 13:59:27,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:59:27,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:59:27,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:59:27,147 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:59:27,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 13:59:27,314 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-19 13:59:27,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:59:27,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 13:59:27,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:59:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:59:27,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:59:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:59:28,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795045065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:59:28,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:59:28,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 51 [2024-11-19 13:59:28,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335587750] [2024-11-19 13:59:28,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:59:28,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 13:59:28,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:59:28,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 13:59:28,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 13:59:28,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-19 13:59:28,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1209 places, 2682 transitions, 55769 flow. Second operand has 52 states, 52 states have (on average 18.46153846153846) internal successors, (960), 52 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:59:28,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:59:28,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-19 13:59:28,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand