./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:40:17,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:40:17,876 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:40:17,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:40:17,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:40:17,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:40:17,897 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:40:17,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:40:17,898 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:40:17,898 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:40:17,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:40:17,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:40:17,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:40:17,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:40:17,899 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:40:17,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:40:17,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:40:17,900 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:40:17,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:40:17,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:40:17,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:40:17,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:40:17,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:40:17,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:40:17,905 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:40:17,905 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:40:17,906 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:40:17,906 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:40:17,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:40:17,906 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:40:17,906 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:40:17,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:40:17,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:40:17,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:40:17,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:40:17,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:40:17,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:40:17,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:40:17,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:40:17,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:40:17,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:40:17,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:40:17,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:40:17,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:40:17,912 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd [2024-10-13 16:40:18,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:40:18,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:40:18,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:40:18,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:40:18,158 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:40:18,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2024-10-13 16:40:19,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:40:19,774 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:40:19,774 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2024-10-13 16:40:19,784 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3ad97bba/d701bb5bf25d4990821a49f060c1d3ed/FLAGf190abcfb [2024-10-13 16:40:20,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3ad97bba/d701bb5bf25d4990821a49f060c1d3ed [2024-10-13 16:40:20,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:40:20,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:40:20,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:40:20,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:40:20,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:40:20,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e80bbc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20, skipping insertion in model container [2024-10-13 16:40:20,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,112 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:40:20,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:40:20,412 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:40:20,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:40:20,479 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:40:20,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20 WrapperNode [2024-10-13 16:40:20,481 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:40:20,482 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:40:20,482 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:40:20,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:40:20,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,525 INFO L138 Inliner]: procedures = 161, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2024-10-13 16:40:20,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:40:20,526 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:40:20,527 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:40:20,527 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:40:20,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,537 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,547 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 1 writes are split as follows [1]. [2024-10-13 16:40:20,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:40:20,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:40:20,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:40:20,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:40:20,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (1/1) ... [2024-10-13 16:40:20,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:40:20,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:20,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:40:20,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 16:40:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 16:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:40:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:40:20,645 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:40:20,754 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:40:20,757 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:40:20,886 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:40:20,886 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:40:20,962 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:40:20,962 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 16:40:20,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:20 BoogieIcfgContainer [2024-10-13 16:40:20,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:40:20,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:40:20,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:40:20,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:40:20,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:40:20" (1/3) ... [2024-10-13 16:40:20,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339dd984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:40:20, skipping insertion in model container [2024-10-13 16:40:20,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:20" (2/3) ... [2024-10-13 16:40:20,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339dd984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:40:20, skipping insertion in model container [2024-10-13 16:40:20,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:20" (3/3) ... [2024-10-13 16:40:20,971 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_02-idx_nr.i [2024-10-13 16:40:20,985 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:40:20,985 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-13 16:40:20,985 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:40:21,017 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 16:40:21,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2024-10-13 16:40:21,060 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-10-13 16:40:21,060 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:21,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-10-13 16:40:21,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2024-10-13 16:40:21,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2024-10-13 16:40:21,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:40:21,084 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;@59dd884a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:40:21,084 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-13 16:40:21,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:40:21,088 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:40:21,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:21,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:21,089 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:40:21,089 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:21,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:21,094 INFO L85 PathProgramCache]: Analyzing trace with hash 162888, now seen corresponding path program 1 times [2024-10-13 16:40:21,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:21,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766597892] [2024-10-13 16:40:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:21,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:21,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:21,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766597892] [2024-10-13 16:40:21,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766597892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:21,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:21,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:21,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535609514] [2024-10-13 16:40:21,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:21,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:21,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:21,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:21,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-10-13 16:40:21,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-10-13 16:40:21,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:21,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-10-13 16:40:21,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:21,411 INFO L124 PetriNetUnfolderBase]: 31/100 cut-off events. [2024-10-13 16:40:21,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:21,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 100 events. 31/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 338 event pairs, 30 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 164. Up to 74 conditions per place. [2024-10-13 16:40:21,414 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 13 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2024-10-13 16:40:21,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 87 flow [2024-10-13 16:40:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:40:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:40:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2024-10-13 16:40:21,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 16:40:21,425 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 54 transitions. [2024-10-13 16:40:21,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 87 flow [2024-10-13 16:40:21,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:21,429 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 60 flow [2024-10-13 16:40:21,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2024-10-13 16:40:21,433 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-10-13 16:40:21,434 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 60 flow [2024-10-13 16:40:21,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-10-13 16:40:21,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:21,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-13 16:40:21,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:40:21,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:21,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:21,435 INFO L85 PathProgramCache]: Analyzing trace with hash 5049684, now seen corresponding path program 1 times [2024-10-13 16:40:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:21,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595288403] [2024-10-13 16:40:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:21,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:21,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:21,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595288403] [2024-10-13 16:40:21,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595288403] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:21,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:21,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:21,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90887913] [2024-10-13 16:40:21,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:21,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:21,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:21,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:21,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:21,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-10-13 16:40:21,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-10-13 16:40:21,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:21,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-10-13 16:40:21,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:21,587 INFO L124 PetriNetUnfolderBase]: 31/103 cut-off events. [2024-10-13 16:40:21,587 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:40:21,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 103 events. 31/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 345 event pairs, 30 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 168. Up to 78 conditions per place. [2024-10-13 16:40:21,592 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 16 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-10-13 16:40:21,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 106 flow [2024-10-13 16:40:21,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:40:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:40:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2024-10-13 16:40:21,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-10-13 16:40:21,594 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 60 flow. Second operand 4 states and 57 transitions. [2024-10-13 16:40:21,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 106 flow [2024-10-13 16:40:21,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 94 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:40:21,595 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 74 flow [2024-10-13 16:40:21,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-10-13 16:40:21,596 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2024-10-13 16:40:21,598 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 74 flow [2024-10-13 16:40:21,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-10-13 16:40:21,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:21,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:40:21,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:40:21,599 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:21,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:21,600 INFO L85 PathProgramCache]: Analyzing trace with hash 111444644, now seen corresponding path program 1 times [2024-10-13 16:40:21,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:21,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64515373] [2024-10-13 16:40:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:21,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:40:21,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:21,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64515373] [2024-10-13 16:40:21,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64515373] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:21,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:21,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:21,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660873275] [2024-10-13 16:40:21,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:21,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:40:21,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:21,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:40:21,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:40:21,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-10-13 16:40:21,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 16:40:21,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:21,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-10-13 16:40:21,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:21,695 INFO L124 PetriNetUnfolderBase]: 31/102 cut-off events. [2024-10-13 16:40:21,695 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:40:21,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 102 events. 31/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 340 event pairs, 30 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 178. Up to 77 conditions per place. [2024-10-13 16:40:21,698 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 14 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-10-13 16:40:21,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 106 flow [2024-10-13 16:40:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:40:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:40:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-10-13 16:40:21,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2024-10-13 16:40:21,700 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 74 flow. Second operand 3 states and 44 transitions. [2024-10-13 16:40:21,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 106 flow [2024-10-13 16:40:21,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:21,702 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 76 flow [2024-10-13 16:40:21,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-10-13 16:40:21,703 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2024-10-13 16:40:21,703 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 76 flow [2024-10-13 16:40:21,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 16:40:21,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:21,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:21,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:40:21,704 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:21,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash 77734548, now seen corresponding path program 1 times [2024-10-13 16:40:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:21,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082786142] [2024-10-13 16:40:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:21,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:40:21,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:21,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082786142] [2024-10-13 16:40:21,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082786142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:21,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:21,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:21,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281146012] [2024-10-13 16:40:21,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:21,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:21,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:21,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:21,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:21,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-10-13 16:40:21,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-13 16:40:21,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:21,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-10-13 16:40:21,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:21,824 INFO L124 PetriNetUnfolderBase]: 46/135 cut-off events. [2024-10-13 16:40:21,825 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 16:40:21,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 135 events. 46/135 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 488 event pairs, 14 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 245. Up to 49 conditions per place. [2024-10-13 16:40:21,826 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 24 selfloop transitions, 6 changer transitions 6/42 dead transitions. [2024-10-13 16:40:21,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 180 flow [2024-10-13 16:40:21,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-10-13 16:40:21,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-13 16:40:21,827 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 76 flow. Second operand 5 states and 81 transitions. [2024-10-13 16:40:21,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 180 flow [2024-10-13 16:40:21,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:40:21,828 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 106 flow [2024-10-13 16:40:21,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2024-10-13 16:40:21,829 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-10-13 16:40:21,829 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 106 flow [2024-10-13 16:40:21,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-13 16:40:21,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:21,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:21,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:40:21,830 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:21,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash 77998694, now seen corresponding path program 1 times [2024-10-13 16:40:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:21,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057458069] [2024-10-13 16:40:21,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:21,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:40:21,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:21,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057458069] [2024-10-13 16:40:21,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057458069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:21,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:21,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:21,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269998732] [2024-10-13 16:40:21,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:21,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:21,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:21,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:21,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-10-13 16:40:21,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:21,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:21,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-10-13 16:40:21,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:21,955 INFO L124 PetriNetUnfolderBase]: 43/138 cut-off events. [2024-10-13 16:40:21,955 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-13 16:40:21,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 138 events. 43/138 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 537 event pairs, 21 based on Foata normal form. 7/143 useless extension candidates. Maximal degree in co-relation 301. Up to 55 conditions per place. [2024-10-13 16:40:21,956 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 25 selfloop transitions, 7 changer transitions 6/45 dead transitions. [2024-10-13 16:40:21,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 230 flow [2024-10-13 16:40:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:21,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-10-13 16:40:21,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-13 16:40:21,958 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 106 flow. Second operand 5 states and 81 transitions. [2024-10-13 16:40:21,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 230 flow [2024-10-13 16:40:21,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:40:21,960 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 152 flow [2024-10-13 16:40:21,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2024-10-13 16:40:21,961 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-10-13 16:40:21,961 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 152 flow [2024-10-13 16:40:21,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:21,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:21,961 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:21,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:40:21,962 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:21,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:21,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1885196146, now seen corresponding path program 1 times [2024-10-13 16:40:21,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:21,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831535569] [2024-10-13 16:40:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:21,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:40:22,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:22,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831535569] [2024-10-13 16:40:22,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831535569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:22,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:22,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:22,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828993322] [2024-10-13 16:40:22,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:22,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:22,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:22,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:22,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:22,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-10-13 16:40:22,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-13 16:40:22,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:22,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-10-13 16:40:22,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:22,099 INFO L124 PetriNetUnfolderBase]: 24/98 cut-off events. [2024-10-13 16:40:22,099 INFO L125 PetriNetUnfolderBase]: For 115/117 co-relation queries the response was YES. [2024-10-13 16:40:22,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 98 events. 24/98 cut-off events. For 115/117 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 334 event pairs, 10 based on Foata normal form. 8/104 useless extension candidates. Maximal degree in co-relation 242. Up to 43 conditions per place. [2024-10-13 16:40:22,100 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 24 selfloop transitions, 6 changer transitions 1/38 dead transitions. [2024-10-13 16:40:22,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 228 flow [2024-10-13 16:40:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:22,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-10-13 16:40:22,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-13 16:40:22,101 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 152 flow. Second operand 5 states and 75 transitions. [2024-10-13 16:40:22,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 228 flow [2024-10-13 16:40:22,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 38 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:22,103 INFO L231 Difference]: Finished difference. Result has 49 places, 30 transitions, 147 flow [2024-10-13 16:40:22,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=49, PETRI_TRANSITIONS=30} [2024-10-13 16:40:22,104 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-10-13 16:40:22,104 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 30 transitions, 147 flow [2024-10-13 16:40:22,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-13 16:40:22,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:22,104 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:22,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:40:22,105 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:22,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:22,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1877007605, now seen corresponding path program 1 times [2024-10-13 16:40:22,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:22,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683017376] [2024-10-13 16:40:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:22,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:40:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:22,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683017376] [2024-10-13 16:40:22,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683017376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:22,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:22,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316854461] [2024-10-13 16:40:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:22,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:22,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:22,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:22,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-10-13 16:40:22,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 30 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:22,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:22,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-10-13 16:40:22,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:22,204 INFO L124 PetriNetUnfolderBase]: 24/92 cut-off events. [2024-10-13 16:40:22,204 INFO L125 PetriNetUnfolderBase]: For 143/145 co-relation queries the response was YES. [2024-10-13 16:40:22,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 92 events. 24/92 cut-off events. For 143/145 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 291 event pairs, 9 based on Foata normal form. 9/99 useless extension candidates. Maximal degree in co-relation 235. Up to 40 conditions per place. [2024-10-13 16:40:22,205 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 24 selfloop transitions, 5 changer transitions 2/37 dead transitions. [2024-10-13 16:40:22,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 37 transitions, 227 flow [2024-10-13 16:40:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-10-13 16:40:22,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-10-13 16:40:22,206 INFO L175 Difference]: Start difference. First operand has 49 places, 30 transitions, 147 flow. Second operand 5 states and 76 transitions. [2024-10-13 16:40:22,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 37 transitions, 227 flow [2024-10-13 16:40:22,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 37 transitions, 205 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-13 16:40:22,208 INFO L231 Difference]: Finished difference. Result has 48 places, 28 transitions, 125 flow [2024-10-13 16:40:22,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=48, PETRI_TRANSITIONS=28} [2024-10-13 16:40:22,208 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-10-13 16:40:22,208 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 125 flow [2024-10-13 16:40:22,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:22,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:22,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:22,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:40:22,209 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:22,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash 311769839, now seen corresponding path program 1 times [2024-10-13 16:40:22,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:22,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200034504] [2024-10-13 16:40:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:22,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:40:22,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:22,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200034504] [2024-10-13 16:40:22,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200034504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:22,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:22,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:40:22,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889937481] [2024-10-13 16:40:22,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:22,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:40:22,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:22,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:40:22,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:40:22,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 27 [2024-10-13 16:40:22,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:22,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:22,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 27 [2024-10-13 16:40:22,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:22,287 INFO L124 PetriNetUnfolderBase]: 10/58 cut-off events. [2024-10-13 16:40:22,288 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-13 16:40:22,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 58 events. 10/58 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 130 event pairs, 2 based on Foata normal form. 6/62 useless extension candidates. Maximal degree in co-relation 138. Up to 24 conditions per place. [2024-10-13 16:40:22,288 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 19 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-10-13 16:40:22,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 31 transitions, 177 flow [2024-10-13 16:40:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:40:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:40:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-13 16:40:22,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 16:40:22,289 INFO L175 Difference]: Start difference. First operand has 48 places, 28 transitions, 125 flow. Second operand 3 states and 54 transitions. [2024-10-13 16:40:22,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 31 transitions, 177 flow [2024-10-13 16:40:22,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 31 transitions, 164 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-13 16:40:22,291 INFO L231 Difference]: Finished difference. Result has 46 places, 28 transitions, 120 flow [2024-10-13 16:40:22,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2024-10-13 16:40:22,291 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-10-13 16:40:22,292 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 120 flow [2024-10-13 16:40:22,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:22,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:22,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:22,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:40:22,292 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:22,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1555824312, now seen corresponding path program 1 times [2024-10-13 16:40:22,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:22,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021415992] [2024-10-13 16:40:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:22,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:22,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:22,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021415992] [2024-10-13 16:40:22,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021415992] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:22,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536069323] [2024-10-13 16:40:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:22,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:22,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:22,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:40:22,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:40:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:22,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:40:22,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:22,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:40:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:22,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536069323] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:40:22,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:40:22,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-13 16:40:22,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011806436] [2024-10-13 16:40:22,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:40:22,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:40:22,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:22,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:40:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:40:22,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-10-13 16:40:22,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 120 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:22,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:22,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-10-13 16:40:22,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:22,507 INFO L124 PetriNetUnfolderBase]: 10/62 cut-off events. [2024-10-13 16:40:22,508 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-13 16:40:22,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 62 events. 10/62 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 9 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 132. Up to 37 conditions per place. [2024-10-13 16:40:22,509 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2024-10-13 16:40:22,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 31 transitions, 178 flow [2024-10-13 16:40:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:40:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:40:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-10-13 16:40:22,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-10-13 16:40:22,511 INFO L175 Difference]: Start difference. First operand has 46 places, 28 transitions, 120 flow. Second operand 7 states and 86 transitions. [2024-10-13 16:40:22,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 31 transitions, 178 flow [2024-10-13 16:40:22,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 31 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:22,513 INFO L231 Difference]: Finished difference. Result has 53 places, 31 transitions, 153 flow [2024-10-13 16:40:22,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=53, PETRI_TRANSITIONS=31} [2024-10-13 16:40:22,514 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-10-13 16:40:22,514 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 31 transitions, 153 flow [2024-10-13 16:40:22,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:22,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:22,515 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:22,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:40:22,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:22,720 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:22,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash 958670356, now seen corresponding path program 2 times [2024-10-13 16:40:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:22,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287964329] [2024-10-13 16:40:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:22,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287964329] [2024-10-13 16:40:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287964329] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755892312] [2024-10-13 16:40:22,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:40:22,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:22,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:22,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:40:22,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:40:22,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:40:22,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:40:22,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:40:22,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:40:22,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:40:22,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755892312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:22,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:40:22,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-10-13 16:40:22,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927850890] [2024-10-13 16:40:22,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:22,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:22,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:22,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:22,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:40:22,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-10-13 16:40:22,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:22,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:22,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-10-13 16:40:22,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:23,035 INFO L124 PetriNetUnfolderBase]: 13/61 cut-off events. [2024-10-13 16:40:23,035 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-13 16:40:23,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 61 events. 13/61 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 6 based on Foata normal form. 4/64 useless extension candidates. Maximal degree in co-relation 133. Up to 33 conditions per place. [2024-10-13 16:40:23,036 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 22 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2024-10-13 16:40:23,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 32 transitions, 209 flow [2024-10-13 16:40:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:23,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-10-13 16:40:23,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-10-13 16:40:23,037 INFO L175 Difference]: Start difference. First operand has 53 places, 31 transitions, 153 flow. Second operand 5 states and 54 transitions. [2024-10-13 16:40:23,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 32 transitions, 209 flow [2024-10-13 16:40:23,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 32 transitions, 189 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-13 16:40:23,039 INFO L231 Difference]: Finished difference. Result has 48 places, 29 transitions, 139 flow [2024-10-13 16:40:23,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2024-10-13 16:40:23,039 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-10-13 16:40:23,040 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 139 flow [2024-10-13 16:40:23,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:23,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:23,040 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:23,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:40:23,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 16:40:23,245 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:23,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:23,245 INFO L85 PathProgramCache]: Analyzing trace with hash -345989859, now seen corresponding path program 1 times [2024-10-13 16:40:23,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:23,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254789470] [2024-10-13 16:40:23,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:23,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:40:23,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:23,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254789470] [2024-10-13 16:40:23,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254789470] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:23,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:23,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:40:23,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355871769] [2024-10-13 16:40:23,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:23,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:40:23,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:23,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:40:23,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:40:23,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-10-13 16:40:23,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:23,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:23,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-10-13 16:40:23,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:23,428 INFO L124 PetriNetUnfolderBase]: 11/57 cut-off events. [2024-10-13 16:40:23,432 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-10-13 16:40:23,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 57 events. 11/57 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 5 based on Foata normal form. 2/58 useless extension candidates. Maximal degree in co-relation 120. Up to 19 conditions per place. [2024-10-13 16:40:23,433 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 18 selfloop transitions, 3 changer transitions 8/33 dead transitions. [2024-10-13 16:40:23,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 33 transitions, 205 flow [2024-10-13 16:40:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:40:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:40:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-10-13 16:40:23,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-10-13 16:40:23,434 INFO L175 Difference]: Start difference. First operand has 48 places, 29 transitions, 139 flow. Second operand 7 states and 74 transitions. [2024-10-13 16:40:23,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 33 transitions, 205 flow [2024-10-13 16:40:23,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 33 transitions, 189 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:40:23,439 INFO L231 Difference]: Finished difference. Result has 47 places, 23 transitions, 105 flow [2024-10-13 16:40:23,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=105, PETRI_PLACES=47, PETRI_TRANSITIONS=23} [2024-10-13 16:40:23,439 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-10-13 16:40:23,440 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 23 transitions, 105 flow [2024-10-13 16:40:23,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:23,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:23,440 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:23,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:40:23,440 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:23,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:23,441 INFO L85 PathProgramCache]: Analyzing trace with hash 840794320, now seen corresponding path program 1 times [2024-10-13 16:40:23,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:23,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059134456] [2024-10-13 16:40:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:23,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059134456] [2024-10-13 16:40:23,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059134456] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519404675] [2024-10-13 16:40:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:23,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:23,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:23,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:40:23,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:40:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:23,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 16:40:23,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:23,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:40:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:23,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519404675] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:40:23,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:40:23,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-13 16:40:23,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911767419] [2024-10-13 16:40:23,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:40:23,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 16:40:23,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:23,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 16:40:23,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-13 16:40:23,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-10-13 16:40:23,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 23 transitions, 105 flow. Second operand has 16 states, 16 states have (on average 10.5) internal successors, (168), 16 states have internal predecessors, (168), 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) [2024-10-13 16:40:23,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:23,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-10-13 16:40:23,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:23,844 INFO L124 PetriNetUnfolderBase]: 8/55 cut-off events. [2024-10-13 16:40:23,844 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-13 16:40:23,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 55 events. 8/55 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 7 based on Foata normal form. 4/58 useless extension candidates. Maximal degree in co-relation 98. Up to 27 conditions per place. [2024-10-13 16:40:23,844 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 11 selfloop transitions, 15 changer transitions 0/31 dead transitions. [2024-10-13 16:40:23,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 31 transitions, 205 flow [2024-10-13 16:40:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:40:23,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:40:23,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 165 transitions. [2024-10-13 16:40:23,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-10-13 16:40:23,846 INFO L175 Difference]: Start difference. First operand has 47 places, 23 transitions, 105 flow. Second operand 15 states and 165 transitions. [2024-10-13 16:40:23,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 31 transitions, 205 flow [2024-10-13 16:40:23,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 31 transitions, 187 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 16:40:23,847 INFO L231 Difference]: Finished difference. Result has 50 places, 31 transitions, 184 flow [2024-10-13 16:40:23,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=184, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2024-10-13 16:40:23,847 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-10-13 16:40:23,847 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 184 flow [2024-10-13 16:40:23,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.5) internal successors, (168), 16 states have internal predecessors, (168), 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) [2024-10-13 16:40:23,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:23,848 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:23,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 16:40:24,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:24,052 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:40:24,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash 272762064, now seen corresponding path program 2 times [2024-10-13 16:40:24,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:24,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036529345] [2024-10-13 16:40:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:24,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:40:24,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:24,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036529345] [2024-10-13 16:40:24,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036529345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:24,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:24,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:40:24,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997886383] [2024-10-13 16:40:24,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:24,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:40:24,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:24,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:40:24,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:40:24,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-10-13 16:40:24,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:24,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:24,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-10-13 16:40:24,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:24,191 INFO L124 PetriNetUnfolderBase]: 8/53 cut-off events. [2024-10-13 16:40:24,191 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-10-13 16:40:24,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 53 events. 8/53 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 2 based on Foata normal form. 2/54 useless extension candidates. Maximal degree in co-relation 103. Up to 23 conditions per place. [2024-10-13 16:40:24,192 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-10-13 16:40:24,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 34 transitions, 250 flow [2024-10-13 16:40:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:24,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:24,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-10-13 16:40:24,192 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-10-13 16:40:24,192 INFO L175 Difference]: Start difference. First operand has 50 places, 31 transitions, 184 flow. Second operand 6 states and 60 transitions. [2024-10-13 16:40:24,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 34 transitions, 250 flow [2024-10-13 16:40:24,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 34 transitions, 232 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-13 16:40:24,194 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-10-13 16:40:24,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-10-13 16:40:24,194 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-10-13 16:40:24,194 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-10-13 16:40:24,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:24,197 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2024-10-13 16:40:24,197 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-10-13 16:40:24,197 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-10-13 16:40:24,197 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-10-13 16:40:24,197 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-10-13 16:40:24,197 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-10-13 16:40:24,197 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-10-13 16:40:24,198 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-10-13 16:40:24,198 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-10-13 16:40:24,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:40:24,198 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:24,202 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:40:24,202 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:40:24,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:40:24 BasicIcfg [2024-10-13 16:40:24,206 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:40:24,206 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:40:24,206 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:40:24,206 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:40:24,207 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:20" (3/4) ... [2024-10-13 16:40:24,208 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:40:24,210 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-13 16:40:24,212 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-10-13 16:40:24,212 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-13 16:40:24,212 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 16:40:24,275 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:40:24,275 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:40:24,275 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:40:24,276 INFO L158 Benchmark]: Toolchain (without parser) took 4202.33ms. Allocated memory was 148.9MB in the beginning and 213.9MB in the end (delta: 65.0MB). Free memory was 119.4MB in the beginning and 171.7MB in the end (delta: -52.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:24,276 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory was 65.9MB in the beginning and 65.8MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:24,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.61ms. Allocated memory is still 148.9MB. Free memory was 119.4MB in the beginning and 98.1MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-13 16:40:24,276 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.75ms. Allocated memory is still 148.9MB. Free memory was 98.1MB in the beginning and 96.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:24,276 INFO L158 Benchmark]: Boogie Preprocessor took 34.03ms. Allocated memory is still 148.9MB. Free memory was 96.1MB in the beginning and 94.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:24,276 INFO L158 Benchmark]: RCFGBuilder took 401.64ms. Allocated memory is still 148.9MB. Free memory was 94.0MB in the beginning and 77.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-13 16:40:24,276 INFO L158 Benchmark]: TraceAbstraction took 3241.61ms. Allocated memory was 148.9MB in the beginning and 213.9MB in the end (delta: 65.0MB). Free memory was 76.8MB in the beginning and 175.9MB in the end (delta: -99.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:24,277 INFO L158 Benchmark]: Witness Printer took 68.97ms. Allocated memory is still 213.9MB. Free memory was 175.9MB in the beginning and 171.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 16:40:24,278 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory was 65.9MB in the beginning and 65.8MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.61ms. Allocated memory is still 148.9MB. Free memory was 119.4MB in the beginning and 98.1MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.75ms. Allocated memory is still 148.9MB. Free memory was 98.1MB in the beginning and 96.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.03ms. Allocated memory is still 148.9MB. Free memory was 96.1MB in the beginning and 94.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 401.64ms. Allocated memory is still 148.9MB. Free memory was 94.0MB in the beginning and 77.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3241.61ms. Allocated memory was 148.9MB in the beginning and 213.9MB in the end (delta: 65.0MB). Free memory was 76.8MB in the beginning and 175.9MB in the end (delta: -99.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 68.97ms. Allocated memory is still 213.9MB. Free memory was 175.9MB in the beginning and 171.7MB 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: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: 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 3 procedures, 38 locations, 9 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: 3.2s, OverallIterations: 13, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 226 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 179 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 826 IncrementalHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 36 mSDtfsCounter, 826 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=12, InterpolantAutomatonStates: 74, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 251 NumberOfCodeBlocks, 242 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 272 ConstructedInterpolants, 0 QuantifiedInterpolants, 618 SizeOfPredicates, 5 NumberOfNonLiveVariables, 255 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 102/153 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 16:40:24,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE