./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:47:19,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:47:19,545 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:47:19,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:47:19,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:47:19,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:47:19,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:47:19,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:47:19,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:47:19,585 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:47:19,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:47:19,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:47:19,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:47:19,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:47:19,589 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:47:19,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:47:19,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:47:19,590 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:47:19,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:47:19,590 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:47:19,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:47:19,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:47:19,591 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:47:19,592 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:47:19,592 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:47:19,592 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:47:19,593 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:47:19,593 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:47:19,593 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:47:19,593 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:47:19,594 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:47:19,594 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:47:19,594 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:47:19,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:47:19,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:47:19,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:47:19,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:47:19,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:47:19,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:47:19,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:47:19,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:47:19,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:47:19,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:47:19,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:47:19,598 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2024-10-11 23:47:19,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:47:19,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:47:19,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:47:19,888 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:47:19,888 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:47:19,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-10-11 23:47:21,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:47:21,562 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:47:21,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-10-11 23:47:21,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/707325888/6ab6d98898464425aa8d27f6484561a0/FLAG1d5b02529 [2024-10-11 23:47:21,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/707325888/6ab6d98898464425aa8d27f6484561a0 [2024-10-11 23:47:21,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:47:21,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:47:21,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:47:21,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:47:21,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:47:21,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:47:21" (1/1) ... [2024-10-11 23:47:21,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f22e2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:21, skipping insertion in model container [2024-10-11 23:47:21,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:47:21" (1/1) ... [2024-10-11 23:47:21,653 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:47:22,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:47:22,028 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:47:22,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:47:22,120 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:47:22,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22 WrapperNode [2024-10-11 23:47:22,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:47:22,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:47:22,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:47:22,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:47:22,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,160 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-10-11 23:47:22,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:47:22,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:47:22,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:47:22,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:47:22,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,188 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 23:47:22,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:47:22,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:47:22,206 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:47:22,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:47:22,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (1/1) ... [2024-10-11 23:47:22,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:47:22,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:22,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:47:22,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:47:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 23:47:22,350 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 23:47:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 23:47:22,350 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 23:47:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 23:47:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:47:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:47:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 23:47:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:47:22,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:47:22,352 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:47:22,487 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:47:22,488 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:47:22,632 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:47:22,632 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:47:22,759 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:47:22,759 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 23:47:22,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:47:22 BoogieIcfgContainer [2024-10-11 23:47:22,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:47:22,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:47:22,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:47:22,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:47:22,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:47:21" (1/3) ... [2024-10-11 23:47:22,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44216a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:47:22, skipping insertion in model container [2024-10-11 23:47:22,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:22" (2/3) ... [2024-10-11 23:47:22,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44216a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:47:22, skipping insertion in model container [2024-10-11 23:47:22,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:47:22" (3/3) ... [2024-10-11 23:47:22,769 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2024-10-11 23:47:22,782 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:47:22,782 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 23:47:22,782 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:47:22,815 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:47:22,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2024-10-11 23:47:22,867 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-10-11 23:47:22,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:47:22,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-10-11 23:47:22,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2024-10-11 23:47:22,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2024-10-11 23:47:22,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:47:22,889 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;@4a079b1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:47:22,889 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-11 23:47:22,894 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:47:22,895 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-11 23:47:22,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:47:22,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:22,896 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:47:22,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:22,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash 213710731, now seen corresponding path program 1 times [2024-10-11 23:47:22,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:22,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320287958] [2024-10-11 23:47:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:22,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:23,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:23,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320287958] [2024-10-11 23:47:23,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320287958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:23,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:23,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:47:23,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644841830] [2024-10-11 23:47:23,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:23,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:23,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:23,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:23,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:23,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:23,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:23,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:23,352 INFO L124 PetriNetUnfolderBase]: 288/572 cut-off events. [2024-10-11 23:47:23,352 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:47:23,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 572 events. 288/572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3049 event pairs, 118 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1045. Up to 241 conditions per place. [2024-10-11 23:47:23,363 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-10-11 23:47:23,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 150 flow [2024-10-11 23:47:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-11 23:47:23,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2024-10-11 23:47:23,383 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 73 transitions. [2024-10-11 23:47:23,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 150 flow [2024-10-11 23:47:23,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:23,389 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2024-10-11 23:47:23,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-10-11 23:47:23,394 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-10-11 23:47:23,395 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2024-10-11 23:47:23,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:23,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:23,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:47:23,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:47:23,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:23,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash 213710732, now seen corresponding path program 1 times [2024-10-11 23:47:23,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:23,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854441644] [2024-10-11 23:47:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:23,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:23,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:23,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854441644] [2024-10-11 23:47:23,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854441644] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:23,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:23,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:47:23,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731138773] [2024-10-11 23:47:23,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:23,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:23,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:23,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:23,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:23,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:23,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:23,618 INFO L124 PetriNetUnfolderBase]: 279/583 cut-off events. [2024-10-11 23:47:23,618 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-10-11 23:47:23,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 583 events. 279/583 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3026 event pairs, 102 based on Foata normal form. 16/530 useless extension candidates. Maximal degree in co-relation 1151. Up to 266 conditions per place. [2024-10-11 23:47:23,631 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-10-11 23:47:23,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 174 flow [2024-10-11 23:47:23,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-10-11 23:47:23,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-11 23:47:23,634 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 72 transitions. [2024-10-11 23:47:23,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 174 flow [2024-10-11 23:47:23,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:23,638 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2024-10-11 23:47:23,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-10-11 23:47:23,641 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-10-11 23:47:23,641 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2024-10-11 23:47:23,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:23,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:23,642 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:23,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:47:23,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:23,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash -782409202, now seen corresponding path program 1 times [2024-10-11 23:47:23,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:23,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862561628] [2024-10-11 23:47:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:23,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:23,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:23,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862561628] [2024-10-11 23:47:23,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862561628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:23,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:23,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:47:23,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956038679] [2024-10-11 23:47:23,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:23,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:23,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:23,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:23,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-11 23:47:23,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:23,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:23,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-11 23:47:23,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:23,988 INFO L124 PetriNetUnfolderBase]: 661/1318 cut-off events. [2024-10-11 23:47:23,989 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-10-11 23:47:23,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 1318 events. 661/1318 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8108 event pairs, 260 based on Foata normal form. 64/1231 useless extension candidates. Maximal degree in co-relation 2730. Up to 721 conditions per place. [2024-10-11 23:47:23,998 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 50 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-10-11 23:47:23,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 302 flow [2024-10-11 23:47:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-11 23:47:23,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-10-11 23:47:24,000 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 93 transitions. [2024-10-11 23:47:24,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 302 flow [2024-10-11 23:47:24,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:47:24,003 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2024-10-11 23:47:24,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-10-11 23:47:24,005 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-10-11 23:47:24,005 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2024-10-11 23:47:24,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:24,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:24,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:24,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:47:24,006 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:24,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash -790923469, now seen corresponding path program 1 times [2024-10-11 23:47:24,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:24,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647457478] [2024-10-11 23:47:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:24,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:24,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:24,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647457478] [2024-10-11 23:47:24,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647457478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:24,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:24,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:47:24,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006333298] [2024-10-11 23:47:24,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:24,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:24,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:24,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:24,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:24,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:24,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:24,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:24,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:24,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:24,187 INFO L124 PetriNetUnfolderBase]: 439/1042 cut-off events. [2024-10-11 23:47:24,188 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-10-11 23:47:24,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1042 events. 439/1042 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6779 event pairs, 151 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 2326. Up to 459 conditions per place. [2024-10-11 23:47:24,195 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-10-11 23:47:24,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 267 flow [2024-10-11 23:47:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-10-11 23:47:24,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.78125 [2024-10-11 23:47:24,197 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 75 transitions. [2024-10-11 23:47:24,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 267 flow [2024-10-11 23:47:24,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:47:24,200 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2024-10-11 23:47:24,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-10-11 23:47:24,201 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2024-10-11 23:47:24,201 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2024-10-11 23:47:24,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:24,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:24,202 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:24,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 23:47:24,202 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:24,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:24,203 INFO L85 PathProgramCache]: Analyzing trace with hash -790923468, now seen corresponding path program 1 times [2024-10-11 23:47:24,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:24,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079020373] [2024-10-11 23:47:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:24,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:24,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079020373] [2024-10-11 23:47:24,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079020373] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:24,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:24,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:47:24,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741755157] [2024-10-11 23:47:24,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:24,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:24,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:24,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:24,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:24,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:24,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:24,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:24,372 INFO L124 PetriNetUnfolderBase]: 417/1032 cut-off events. [2024-10-11 23:47:24,373 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2024-10-11 23:47:24,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 1032 events. 417/1032 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6801 event pairs, 117 based on Foata normal form. 24/1015 useless extension candidates. Maximal degree in co-relation 2454. Up to 483 conditions per place. [2024-10-11 23:47:24,380 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2024-10-11 23:47:24,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 290 flow [2024-10-11 23:47:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-10-11 23:47:24,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2024-10-11 23:47:24,382 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 74 transitions. [2024-10-11 23:47:24,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 290 flow [2024-10-11 23:47:24,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:24,386 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2024-10-11 23:47:24,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-10-11 23:47:24,386 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2024-10-11 23:47:24,387 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2024-10-11 23:47:24,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:24,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:24,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:24,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:47:24,387 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:24,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash 131766550, now seen corresponding path program 1 times [2024-10-11 23:47:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629081690] [2024-10-11 23:47:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:24,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629081690] [2024-10-11 23:47:24,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629081690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:24,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:24,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:47:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749247457] [2024-10-11 23:47:24,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:24,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:24,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:24,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:24,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:24,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-11 23:47:24,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:24,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:24,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-11 23:47:24,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:24,641 INFO L124 PetriNetUnfolderBase]: 661/1357 cut-off events. [2024-10-11 23:47:24,642 INFO L125 PetriNetUnfolderBase]: For 1033/1149 co-relation queries the response was YES. [2024-10-11 23:47:24,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1357 events. 661/1357 cut-off events. For 1033/1149 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8942 event pairs, 378 based on Foata normal form. 87/1394 useless extension candidates. Maximal degree in co-relation 3363. Up to 853 conditions per place. [2024-10-11 23:47:24,653 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 51 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-10-11 23:47:24,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 376 flow [2024-10-11 23:47:24,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-10-11 23:47:24,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2024-10-11 23:47:24,657 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 89 transitions. [2024-10-11 23:47:24,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 376 flow [2024-10-11 23:47:24,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:47:24,662 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2024-10-11 23:47:24,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-10-11 23:47:24,662 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2024-10-11 23:47:24,663 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2024-10-11 23:47:24,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:24,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:24,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:24,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 23:47:24,664 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:24,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:24,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1215453567, now seen corresponding path program 1 times [2024-10-11 23:47:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:24,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877472028] [2024-10-11 23:47:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:24,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:24,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:24,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877472028] [2024-10-11 23:47:24,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877472028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:24,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:24,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:24,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193448810] [2024-10-11 23:47:24,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:24,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:24,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:24,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:24,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:24,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:24,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:24,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:24,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:24,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:24,954 INFO L124 PetriNetUnfolderBase]: 553/1324 cut-off events. [2024-10-11 23:47:24,954 INFO L125 PetriNetUnfolderBase]: For 1098/1179 co-relation queries the response was YES. [2024-10-11 23:47:24,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 1324 events. 553/1324 cut-off events. For 1098/1179 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9415 event pairs, 147 based on Foata normal form. 75/1348 useless extension candidates. Maximal degree in co-relation 3466. Up to 422 conditions per place. [2024-10-11 23:47:24,965 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 51 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-10-11 23:47:24,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 435 flow [2024-10-11 23:47:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:47:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:47:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-10-11 23:47:24,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.74375 [2024-10-11 23:47:24,967 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 119 transitions. [2024-10-11 23:47:24,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 435 flow [2024-10-11 23:47:24,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:47:24,970 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 258 flow [2024-10-11 23:47:24,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-10-11 23:47:24,971 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2024-10-11 23:47:24,972 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 258 flow [2024-10-11 23:47:24,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:24,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:24,972 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:24,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:47:24,973 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:24,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1197405986, now seen corresponding path program 1 times [2024-10-11 23:47:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:24,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17818960] [2024-10-11 23:47:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:24,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:25,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:25,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17818960] [2024-10-11 23:47:25,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17818960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:25,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:25,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:25,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920999014] [2024-10-11 23:47:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:25,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:25,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:25,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:25,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:25,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:25,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:25,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:25,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:25,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:25,192 INFO L124 PetriNetUnfolderBase]: 608/1500 cut-off events. [2024-10-11 23:47:25,192 INFO L125 PetriNetUnfolderBase]: For 1768/1889 co-relation queries the response was YES. [2024-10-11 23:47:25,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 1500 events. 608/1500 cut-off events. For 1768/1889 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10885 event pairs, 81 based on Foata normal form. 68/1532 useless extension candidates. Maximal degree in co-relation 4058. Up to 509 conditions per place. [2024-10-11 23:47:25,205 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 55 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-10-11 23:47:25,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 545 flow [2024-10-11 23:47:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:47:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:47:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-11 23:47:25,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-10-11 23:47:25,207 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 258 flow. Second operand 5 states and 116 transitions. [2024-10-11 23:47:25,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 545 flow [2024-10-11 23:47:25,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 543 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 23:47:25,213 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 328 flow [2024-10-11 23:47:25,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-10-11 23:47:25,214 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2024-10-11 23:47:25,214 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 328 flow [2024-10-11 23:47:25,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:25,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:25,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:25,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:47:25,215 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:25,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash -523195646, now seen corresponding path program 1 times [2024-10-11 23:47:25,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:25,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284774139] [2024-10-11 23:47:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:25,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:25,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:25,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284774139] [2024-10-11 23:47:25,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284774139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:25,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:25,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:25,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393436242] [2024-10-11 23:47:25,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:25,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:25,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:25,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:25,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:25,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:25,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:25,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:25,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:25,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:25,496 INFO L124 PetriNetUnfolderBase]: 710/1711 cut-off events. [2024-10-11 23:47:25,496 INFO L125 PetriNetUnfolderBase]: For 3112/3238 co-relation queries the response was YES. [2024-10-11 23:47:25,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5002 conditions, 1711 events. 710/1711 cut-off events. For 3112/3238 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12340 event pairs, 142 based on Foata normal form. 78/1738 useless extension candidates. Maximal degree in co-relation 4973. Up to 720 conditions per place. [2024-10-11 23:47:25,510 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 60 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-10-11 23:47:25,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 643 flow [2024-10-11 23:47:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:47:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:47:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-11 23:47:25,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7625 [2024-10-11 23:47:25,512 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 328 flow. Second operand 5 states and 122 transitions. [2024-10-11 23:47:25,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 643 flow [2024-10-11 23:47:25,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 630 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 23:47:25,520 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 427 flow [2024-10-11 23:47:25,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-10-11 23:47:25,522 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2024-10-11 23:47:25,524 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 427 flow [2024-10-11 23:47:25,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:25,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:25,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:25,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 23:47:25,524 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:25,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:25,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1197399147, now seen corresponding path program 1 times [2024-10-11 23:47:25,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:25,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658374975] [2024-10-11 23:47:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:25,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:25,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:25,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658374975] [2024-10-11 23:47:25,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658374975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:25,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:25,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:25,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702524114] [2024-10-11 23:47:25,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:25,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:25,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:25,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:25,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:25,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:25,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:25,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:25,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:25,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:25,718 INFO L124 PetriNetUnfolderBase]: 558/1313 cut-off events. [2024-10-11 23:47:25,719 INFO L125 PetriNetUnfolderBase]: For 3780/3938 co-relation queries the response was YES. [2024-10-11 23:47:25,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3835 conditions, 1313 events. 558/1313 cut-off events. For 3780/3938 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8784 event pairs, 418 based on Foata normal form. 129/1361 useless extension candidates. Maximal degree in co-relation 3801. Up to 934 conditions per place. [2024-10-11 23:47:25,729 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 31 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-10-11 23:47:25,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 46 transitions, 352 flow [2024-10-11 23:47:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-10-11 23:47:25,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-11 23:47:25,731 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 427 flow. Second operand 3 states and 60 transitions. [2024-10-11 23:47:25,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 46 transitions, 352 flow [2024-10-11 23:47:25,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 46 transitions, 322 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-11 23:47:25,737 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 260 flow [2024-10-11 23:47:25,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2024-10-11 23:47:25,739 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2024-10-11 23:47:25,740 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 260 flow [2024-10-11 23:47:25,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:25,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:25,740 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:25,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:47:25,741 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:25,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash -516534008, now seen corresponding path program 1 times [2024-10-11 23:47:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:25,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016689732] [2024-10-11 23:47:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:25,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016689732] [2024-10-11 23:47:25,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016689732] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:25,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173469046] [2024-10-11 23:47:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:25,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:25,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:25,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:25,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:47:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:25,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:47:25,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:25,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:25,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173469046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:25,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:25,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-11 23:47:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870937827] [2024-10-11 23:47:25,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:25,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:47:25,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:25,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:47:25,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 23:47:25,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-11 23:47:25,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:25,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:25,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-11 23:47:25,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:26,203 INFO L124 PetriNetUnfolderBase]: 1036/2005 cut-off events. [2024-10-11 23:47:26,203 INFO L125 PetriNetUnfolderBase]: For 2333/2478 co-relation queries the response was YES. [2024-10-11 23:47:26,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5686 conditions, 2005 events. 1036/2005 cut-off events. For 2333/2478 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13150 event pairs, 145 based on Foata normal form. 122/2005 useless extension candidates. Maximal degree in co-relation 5660. Up to 785 conditions per place. [2024-10-11 23:47:26,220 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-10-11 23:47:26,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 525 flow [2024-10-11 23:47:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:26,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-11 23:47:26,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-11 23:47:26,222 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 260 flow. Second operand 4 states and 78 transitions. [2024-10-11 23:47:26,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 525 flow [2024-10-11 23:47:26,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:47:26,229 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 267 flow [2024-10-11 23:47:26,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-10-11 23:47:26,230 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2024-10-11 23:47:26,230 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 267 flow [2024-10-11 23:47:26,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:26,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:26,230 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:47:26,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:47:26,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 23:47:26,431 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:26,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:26,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1167315176, now seen corresponding path program 1 times [2024-10-11 23:47:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:26,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630753198] [2024-10-11 23:47:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:26,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:47:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:26,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630753198] [2024-10-11 23:47:26,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630753198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:26,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:26,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:47:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429973302] [2024-10-11 23:47:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:26,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:26,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:26,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:26,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-11 23:47:26,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:26,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:26,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-11 23:47:26,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:26,713 INFO L124 PetriNetUnfolderBase]: 883/1891 cut-off events. [2024-10-11 23:47:26,713 INFO L125 PetriNetUnfolderBase]: For 2718/2799 co-relation queries the response was YES. [2024-10-11 23:47:26,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 1891 events. 883/1891 cut-off events. For 2718/2799 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12757 event pairs, 246 based on Foata normal form. 108/1971 useless extension candidates. Maximal degree in co-relation 5486. Up to 726 conditions per place. [2024-10-11 23:47:26,725 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-10-11 23:47:26,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 534 flow [2024-10-11 23:47:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-11 23:47:26,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-11 23:47:26,727 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 267 flow. Second operand 4 states and 78 transitions. [2024-10-11 23:47:26,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 534 flow [2024-10-11 23:47:26,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 522 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:47:26,734 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 271 flow [2024-10-11 23:47:26,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-10-11 23:47:26,734 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2024-10-11 23:47:26,735 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 271 flow [2024-10-11 23:47:26,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:26,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:26,735 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:26,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 23:47:26,736 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:26,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:26,736 INFO L85 PathProgramCache]: Analyzing trace with hash 430599243, now seen corresponding path program 1 times [2024-10-11 23:47:26,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:26,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741991436] [2024-10-11 23:47:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:26,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:26,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:26,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741991436] [2024-10-11 23:47:26,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741991436] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:26,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738710856] [2024-10-11 23:47:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:26,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:26,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:26,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:26,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:47:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:26,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:47:26,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:26,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:26,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738710856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:26,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:26,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 23:47:26,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154362743] [2024-10-11 23:47:26,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:26,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:47:26,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:26,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:47:26,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:47:26,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-11 23:47:26,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:26,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:26,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-11 23:47:26,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:27,204 INFO L124 PetriNetUnfolderBase]: 845/1729 cut-off events. [2024-10-11 23:47:27,205 INFO L125 PetriNetUnfolderBase]: For 3284/3338 co-relation queries the response was YES. [2024-10-11 23:47:27,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 1729 events. 845/1729 cut-off events. For 3284/3338 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11376 event pairs, 70 based on Foata normal form. 123/1774 useless extension candidates. Maximal degree in co-relation 5148. Up to 562 conditions per place. [2024-10-11 23:47:27,216 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 71 selfloop transitions, 6 changer transitions 1/87 dead transitions. [2024-10-11 23:47:27,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 686 flow [2024-10-11 23:47:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:47:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:47:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-10-11 23:47:27,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-11 23:47:27,217 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 271 flow. Second operand 6 states and 116 transitions. [2024-10-11 23:47:27,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 686 flow [2024-10-11 23:47:27,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:27,224 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 271 flow [2024-10-11 23:47:27,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2024-10-11 23:47:27,225 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2024-10-11 23:47:27,226 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 271 flow [2024-10-11 23:47:27,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:27,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:27,226 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:27,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:27,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:27,427 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:27,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1787995972, now seen corresponding path program 1 times [2024-10-11 23:47:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:27,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828706662] [2024-10-11 23:47:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:27,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:27,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:27,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828706662] [2024-10-11 23:47:27,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828706662] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:27,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528425543] [2024-10-11 23:47:27,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:27,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:27,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:27,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:27,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:47:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:27,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:47:27,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:27,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:27,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528425543] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:27,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:27,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-11 23:47:27,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419630823] [2024-10-11 23:47:27,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:27,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:47:27,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:27,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:47:27,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:47:27,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:27,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 271 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:27,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:27,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:27,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:27,917 INFO L124 PetriNetUnfolderBase]: 747/1715 cut-off events. [2024-10-11 23:47:27,917 INFO L125 PetriNetUnfolderBase]: For 3566/3614 co-relation queries the response was YES. [2024-10-11 23:47:27,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 1715 events. 747/1715 cut-off events. For 3566/3614 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10727 event pairs, 71 based on Foata normal form. 135/1829 useless extension candidates. Maximal degree in co-relation 5208. Up to 289 conditions per place. [2024-10-11 23:47:27,928 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 61 selfloop transitions, 12 changer transitions 4/89 dead transitions. [2024-10-11 23:47:27,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 653 flow [2024-10-11 23:47:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:47:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:47:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-10-11 23:47:27,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-10-11 23:47:27,930 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 271 flow. Second operand 7 states and 160 transitions. [2024-10-11 23:47:27,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 653 flow [2024-10-11 23:47:27,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 626 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-11 23:47:27,937 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 375 flow [2024-10-11 23:47:27,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-10-11 23:47:27,938 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-10-11 23:47:27,938 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 375 flow [2024-10-11 23:47:27,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:27,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:27,939 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:27,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 23:47:28,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:28,143 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:28,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:28,143 INFO L85 PathProgramCache]: Analyzing trace with hash 463674896, now seen corresponding path program 1 times [2024-10-11 23:47:28,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:28,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273583070] [2024-10-11 23:47:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:28,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:47:28,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:28,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273583070] [2024-10-11 23:47:28,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273583070] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:28,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:28,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:47:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210256058] [2024-10-11 23:47:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:28,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:28,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:28,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-11 23:47:28,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:28,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:28,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-11 23:47:28,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:28,436 INFO L124 PetriNetUnfolderBase]: 1190/2263 cut-off events. [2024-10-11 23:47:28,436 INFO L125 PetriNetUnfolderBase]: For 5912/5957 co-relation queries the response was YES. [2024-10-11 23:47:28,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7489 conditions, 2263 events. 1190/2263 cut-off events. For 5912/5957 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13455 event pairs, 275 based on Foata normal form. 153/2382 useless extension candidates. Maximal degree in co-relation 7457. Up to 893 conditions per place. [2024-10-11 23:47:28,451 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-10-11 23:47:28,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 740 flow [2024-10-11 23:47:28,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-10-11 23:47:28,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-10-11 23:47:28,452 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 375 flow. Second operand 4 states and 74 transitions. [2024-10-11 23:47:28,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 740 flow [2024-10-11 23:47:28,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 705 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 23:47:28,462 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 368 flow [2024-10-11 23:47:28,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-10-11 23:47:28,464 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-10-11 23:47:28,464 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 368 flow [2024-10-11 23:47:28,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:28,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:28,465 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:28,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 23:47:28,465 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:28,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1702380340, now seen corresponding path program 1 times [2024-10-11 23:47:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:28,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398780759] [2024-10-11 23:47:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:28,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398780759] [2024-10-11 23:47:28,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398780759] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:28,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774543782] [2024-10-11 23:47:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:28,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:28,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:28,546 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:28,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:47:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:28,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 23:47:28,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:28,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:28,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774543782] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:28,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:28,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 23:47:28,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849282452] [2024-10-11 23:47:28,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:28,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 23:47:28,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:28,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 23:47:28,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-11 23:47:28,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:28,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 368 flow. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:28,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:28,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:28,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:29,112 INFO L124 PetriNetUnfolderBase]: 972/2189 cut-off events. [2024-10-11 23:47:29,112 INFO L125 PetriNetUnfolderBase]: For 7431/7449 co-relation queries the response was YES. [2024-10-11 23:47:29,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7028 conditions, 2189 events. 972/2189 cut-off events. For 7431/7449 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13043 event pairs, 35 based on Foata normal form. 120/2306 useless extension candidates. Maximal degree in co-relation 6997. Up to 277 conditions per place. [2024-10-11 23:47:29,125 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 78 selfloop transitions, 17 changer transitions 17/124 dead transitions. [2024-10-11 23:47:29,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 946 flow [2024-10-11 23:47:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 23:47:29,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 23:47:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 270 transitions. [2024-10-11 23:47:29,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-11 23:47:29,127 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 368 flow. Second operand 12 states and 270 transitions. [2024-10-11 23:47:29,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 946 flow [2024-10-11 23:47:29,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 124 transitions, 909 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:29,138 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 427 flow [2024-10-11 23:47:29,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=427, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2024-10-11 23:47:29,139 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2024-10-11 23:47:29,139 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 427 flow [2024-10-11 23:47:29,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:29,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:29,140 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:29,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:29,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 23:47:29,341 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:29,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:29,341 INFO L85 PathProgramCache]: Analyzing trace with hash -550526186, now seen corresponding path program 1 times [2024-10-11 23:47:29,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:29,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179680499] [2024-10-11 23:47:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:29,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:29,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:29,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179680499] [2024-10-11 23:47:29,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179680499] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:29,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967897] [2024-10-11 23:47:29,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:29,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:29,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:29,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:29,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:47:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:29,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:47:29,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:29,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:29,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967897] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:29,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:29,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-11 23:47:29,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907729880] [2024-10-11 23:47:29,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:29,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 23:47:29,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:29,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 23:47:29,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-11 23:47:29,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:29,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 427 flow. Second operand has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:29,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:29,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:29,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:30,284 INFO L124 PetriNetUnfolderBase]: 1422/3164 cut-off events. [2024-10-11 23:47:30,284 INFO L125 PetriNetUnfolderBase]: For 11451/11475 co-relation queries the response was YES. [2024-10-11 23:47:30,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10137 conditions, 3164 events. 1422/3164 cut-off events. For 11451/11475 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19052 event pairs, 71 based on Foata normal form. 114/3263 useless extension candidates. Maximal degree in co-relation 10098. Up to 391 conditions per place. [2024-10-11 23:47:30,302 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 24 changer transitions 25/153 dead transitions. [2024-10-11 23:47:30,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 153 transitions, 1222 flow [2024-10-11 23:47:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:47:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:47:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 336 transitions. [2024-10-11 23:47:30,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-11 23:47:30,304 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 427 flow. Second operand 15 states and 336 transitions. [2024-10-11 23:47:30,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 153 transitions, 1222 flow [2024-10-11 23:47:30,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 153 transitions, 1209 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-11 23:47:30,319 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 578 flow [2024-10-11 23:47:30,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=578, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2024-10-11 23:47:30,320 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2024-10-11 23:47:30,320 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 578 flow [2024-10-11 23:47:30,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:30,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:30,321 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:30,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:30,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 23:47:30,522 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:30,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:30,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1669441654, now seen corresponding path program 2 times [2024-10-11 23:47:30,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:30,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123323876] [2024-10-11 23:47:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:30,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:30,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:30,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123323876] [2024-10-11 23:47:30,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123323876] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:30,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376211317] [2024-10-11 23:47:30,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:47:30,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:30,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:30,810 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:30,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:47:30,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:47:30,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:47:30,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 23:47:30,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:30,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:31,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376211317] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:31,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:31,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-10-11 23:47:31,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054445035] [2024-10-11 23:47:31,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:31,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 23:47:31,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:31,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 23:47:31,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-10-11 23:47:31,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:31,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 578 flow. Second operand has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:31,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:31,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:31,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:32,624 INFO L124 PetriNetUnfolderBase]: 2412/5357 cut-off events. [2024-10-11 23:47:32,624 INFO L125 PetriNetUnfolderBase]: For 28181/28199 co-relation queries the response was YES. [2024-10-11 23:47:32,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17423 conditions, 5357 events. 2412/5357 cut-off events. For 28181/28199 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 31928 event pairs, 35 based on Foata normal form. 216/5570 useless extension candidates. Maximal degree in co-relation 17376. Up to 709 conditions per place. [2024-10-11 23:47:32,657 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 158 selfloop transitions, 41 changer transitions 49/260 dead transitions. [2024-10-11 23:47:32,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 260 transitions, 2117 flow [2024-10-11 23:47:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 23:47:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 23:47:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 627 transitions. [2024-10-11 23:47:32,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6997767857142857 [2024-10-11 23:47:32,660 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 578 flow. Second operand 28 states and 627 transitions. [2024-10-11 23:47:32,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 260 transitions, 2117 flow [2024-10-11 23:47:32,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 260 transitions, 2037 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 23:47:32,696 INFO L231 Difference]: Finished difference. Result has 139 places, 76 transitions, 840 flow [2024-10-11 23:47:32,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=840, PETRI_PLACES=139, PETRI_TRANSITIONS=76} [2024-10-11 23:47:32,696 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2024-10-11 23:47:32,697 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 76 transitions, 840 flow [2024-10-11 23:47:32,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:32,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:32,697 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:32,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 23:47:32,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 23:47:32,902 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:32,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:32,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1964422650, now seen corresponding path program 2 times [2024-10-11 23:47:32,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:32,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766586561] [2024-10-11 23:47:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:32,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:33,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766586561] [2024-10-11 23:47:33,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766586561] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071530755] [2024-10-11 23:47:33,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:47:33,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:33,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:33,441 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:33,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:47:33,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:47:33,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:47:33,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 23:47:33,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:33,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:34,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071530755] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:34,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:34,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2024-10-11 23:47:34,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428241136] [2024-10-11 23:47:34,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:34,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-11 23:47:34,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:34,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-11 23:47:34,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 23:47:34,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-10-11 23:47:34,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 76 transitions, 840 flow. Second operand has 48 states, 48 states have (on average 16.083333333333332) internal successors, (772), 48 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:34,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:34,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-10-11 23:47:34,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:37,074 INFO L124 PetriNetUnfolderBase]: 4302/9500 cut-off events. [2024-10-11 23:47:37,075 INFO L125 PetriNetUnfolderBase]: For 80805/80829 co-relation queries the response was YES. [2024-10-11 23:47:37,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30896 conditions, 9500 events. 4302/9500 cut-off events. For 80805/80829 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 56827 event pairs, 71 based on Foata normal form. 402/9887 useless extension candidates. Maximal degree in co-relation 30836. Up to 1255 conditions per place. [2024-10-11 23:47:37,146 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 252 selfloop transitions, 72 changer transitions 89/425 dead transitions. [2024-10-11 23:47:37,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 425 transitions, 3531 flow [2024-10-11 23:47:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-11 23:47:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-10-11 23:47:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1056 transitions. [2024-10-11 23:47:37,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7021276595744681 [2024-10-11 23:47:37,151 INFO L175 Difference]: Start difference. First operand has 139 places, 76 transitions, 840 flow. Second operand 47 states and 1056 transitions. [2024-10-11 23:47:37,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 425 transitions, 3531 flow [2024-10-11 23:47:37,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 425 transitions, 3385 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-11 23:47:37,261 INFO L231 Difference]: Finished difference. Result has 197 places, 108 transitions, 1346 flow [2024-10-11 23:47:37,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1346, PETRI_PLACES=197, PETRI_TRANSITIONS=108} [2024-10-11 23:47:37,262 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 162 predicate places. [2024-10-11 23:47:37,262 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 108 transitions, 1346 flow [2024-10-11 23:47:37,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 16.083333333333332) internal successors, (772), 48 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:37,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:37,263 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:37,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 23:47:37,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:37,468 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:37,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1850068462, now seen corresponding path program 3 times [2024-10-11 23:47:37,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:37,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496260003] [2024-10-11 23:47:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:37,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 0 proven. 2291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:39,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:39,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496260003] [2024-10-11 23:47:39,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496260003] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:39,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854140548] [2024-10-11 23:47:39,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 23:47:39,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:39,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:39,350 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:39,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 23:47:39,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-10-11 23:47:39,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:47:39,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-11 23:47:39,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 2288 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 23:47:41,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:41,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854140548] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:41,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:41,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [45] total 90 [2024-10-11 23:47:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650273989] [2024-10-11 23:47:41,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:41,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-11 23:47:41,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:41,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-11 23:47:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1102, Invalid=6908, Unknown=0, NotChecked=0, Total=8010 [2024-10-11 23:47:41,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-11 23:47:41,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 108 transitions, 1346 flow. Second operand has 45 states, 45 states have (on average 13.044444444444444) internal successors, (587), 45 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:41,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:41,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-11 23:47:41,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:01,189 INFO L124 PetriNetUnfolderBase]: 57698/100737 cut-off events. [2024-10-11 23:48:01,189 INFO L125 PetriNetUnfolderBase]: For 263341/263341 co-relation queries the response was YES. [2024-10-11 23:48:02,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334089 conditions, 100737 events. 57698/100737 cut-off events. For 263341/263341 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 840538 event pairs, 505 based on Foata normal form. 728/101455 useless extension candidates. Maximal degree in co-relation 334016. Up to 15435 conditions per place. [2024-10-11 23:48:02,638 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 1694/1694 dead transitions. [2024-10-11 23:48:02,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1694 transitions, 21720 flow [2024-10-11 23:48:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-11 23:48:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-10-11 23:48:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 870 transitions. [2024-10-11 23:48:02,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6322674418604651 [2024-10-11 23:48:02,642 INFO L175 Difference]: Start difference. First operand has 197 places, 108 transitions, 1346 flow. Second operand 43 states and 870 transitions. [2024-10-11 23:48:02,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1694 transitions, 21720 flow [2024-10-11 23:48:04,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1694 transitions, 15210 flow, removed 42 selfloop flow, removed 73 redundant places. [2024-10-11 23:48:04,137 INFO L231 Difference]: Finished difference. Result has 160 places, 0 transitions, 0 flow [2024-10-11 23:48:04,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=0, PETRI_PLACES=160, PETRI_TRANSITIONS=0} [2024-10-11 23:48:04,138 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 125 predicate places. [2024-10-11 23:48:04,138 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 0 transitions, 0 flow [2024-10-11 23:48:04,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 13.044444444444444) internal successors, (587), 45 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:04,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-11 23:48:04,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2024-10-11 23:48:04,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-10-11 23:48:04,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-10-11 23:48:04,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-10-11 23:48:04,143 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-10-11 23:48:04,143 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-10-11 23:48:04,143 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-10-11 23:48:04,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 23:48:04,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:04,344 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:04,350 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 23:48:04,350 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 23:48:04,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 11:48:04 BasicIcfg [2024-10-11 23:48:04,355 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 23:48:04,355 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 23:48:04,355 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 23:48:04,355 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 23:48:04,356 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:47:22" (3/4) ... [2024-10-11 23:48:04,357 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 23:48:04,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-10-11 23:48:04,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-10-11 23:48:04,363 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2024-10-11 23:48:04,364 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-11 23:48:04,364 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-11 23:48:04,364 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 23:48:04,429 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 23:48:04,430 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 23:48:04,430 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 23:48:04,431 INFO L158 Benchmark]: Toolchain (without parser) took 42832.83ms. Allocated memory was 197.1MB in the beginning and 12.1GB in the end (delta: 11.9GB). Free memory was 126.8MB in the beginning and 10.3GB in the end (delta: -10.2GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-10-11 23:48:04,431 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 23:48:04,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.87ms. Allocated memory is still 197.1MB. Free memory was 126.5MB in the beginning and 105.2MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-11 23:48:04,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.15ms. Allocated memory is still 197.1MB. Free memory was 105.2MB in the beginning and 103.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 23:48:04,432 INFO L158 Benchmark]: Boogie Preprocessor took 44.10ms. Allocated memory is still 197.1MB. Free memory was 103.2MB in the beginning and 101.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 23:48:04,432 INFO L158 Benchmark]: RCFGBuilder took 553.63ms. Allocated memory is still 197.1MB. Free memory was 101.4MB in the beginning and 147.9MB in the end (delta: -46.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-10-11 23:48:04,433 INFO L158 Benchmark]: TraceAbstraction took 41592.79ms. Allocated memory was 197.1MB in the beginning and 12.1GB in the end (delta: 11.9GB). Free memory was 146.9MB in the beginning and 10.4GB in the end (delta: -10.2GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2024-10-11 23:48:04,433 INFO L158 Benchmark]: Witness Printer took 75.24ms. Allocated memory is still 12.1GB. Free memory was 10.4GB in the beginning and 10.3GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 23:48:04,435 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.87ms. Allocated memory is still 197.1MB. Free memory was 126.5MB in the beginning and 105.2MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.15ms. Allocated memory is still 197.1MB. Free memory was 105.2MB in the beginning and 103.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.10ms. Allocated memory is still 197.1MB. Free memory was 103.2MB in the beginning and 101.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 553.63ms. Allocated memory is still 197.1MB. Free memory was 101.4MB in the beginning and 147.9MB in the end (delta: -46.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * TraceAbstraction took 41592.79ms. Allocated memory was 197.1MB in the beginning and 12.1GB in the end (delta: 11.9GB). Free memory was 146.9MB in the beginning and 10.4GB in the end (delta: -10.2GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 75.24ms. Allocated memory is still 12.1GB. Free memory was 10.4GB in the beginning and 10.3GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 41.5s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 31.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3486 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3414 mSDsluCounter, 262 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 239 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5075 IncrementalHoareTripleChecker+Invalid, 5148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 23 mSDtfsCounter, 5075 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1026 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5619 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1346occurred in iteration=19, InterpolantAutomatonStates: 208, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 1120 NumberOfCodeBlocks, 1120 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 1342 ConstructedInterpolants, 0 QuantifiedInterpolants, 3944 SizeOfPredicates, 70 NumberOfNonLiveVariables, 1550 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 33 InterpolantComputations, 15 PerfectInterpolantSequences, 2309/6804 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 23:48:04,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE