./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 07a8b8b198dffd8285677bd0bfdd16b4d1f780e3a9696ef3e27a077e8ff12a49 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:00:55,699 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:00:55,773 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:00:55,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:00:55,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:00:55,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:00:55,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:00:55,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:00:55,808 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:00:55,808 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:00:55,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:00:55,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:00:55,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:00:55,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:00:55,812 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:00:55,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:00:55,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:00:55,813 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:00:55,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:00:55,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:00:55,814 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:00:55,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:00:55,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:00:55,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:00:55,819 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:00:55,819 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:00:55,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:00:55,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:00:55,820 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:00:55,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:00:55,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:00:55,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:00:55,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:00:55,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:00:55,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:00:55,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:00:55,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:00:55,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:00:55,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:00:55,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:00:55,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:00:55,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:00:55,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07a8b8b198dffd8285677bd0bfdd16b4d1f780e3a9696ef3e27a077e8ff12a49 [2024-11-09 18:00:56,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:00:56,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:00:56,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:00:56,122 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:00:56,122 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:00:56,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c [2024-11-09 18:00:57,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:00:57,891 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:00:57,892 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c [2024-11-09 18:00:57,900 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b969a49e4/3a2a09fa51654c40a756cfffe6597ee4/FLAG2269c51bd [2024-11-09 18:00:58,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b969a49e4/3a2a09fa51654c40a756cfffe6597ee4 [2024-11-09 18:00:58,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:00:58,269 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:00:58,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:00:58,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:00:58,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:00:58,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e0dd188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58, skipping insertion in model container [2024-11-09 18:00:58,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,305 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:00:58,501 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c[342,355] [2024-11-09 18:00:58,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:00:58,552 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:00:58,565 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/check_removal_from_set_after_insertion.c[342,355] [2024-11-09 18:00:58,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:00:58,606 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:00:58,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58 WrapperNode [2024-11-09 18:00:58,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:00:58,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:00:58,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:00:58,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:00:58,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,657 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2024-11-09 18:00:58,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:00:58,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:00:58,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:00:58,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:00:58,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,676 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,703 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 3, 7]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 1, 3]. [2024-11-09 18:00:58,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,710 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:00:58,726 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:00:58,726 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:00:58,726 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:00:58,727 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:00:58,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:00:58,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:00:58,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:00:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:00:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:00:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:00:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:00:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:00:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:00:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:00:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:00:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:00:58,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:00:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:00:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:00:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:00:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:00:59,027 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:00:59,029 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:00:59,263 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-09 18:00:59,263 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:00:59,283 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:00:59,284 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:00:59,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:00:59 BoogieIcfgContainer [2024-11-09 18:00:59,284 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:00:59,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:00:59,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:00:59,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:00:59,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:00:58" (1/3) ... [2024-11-09 18:00:59,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9fdf81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:00:59, skipping insertion in model container [2024-11-09 18:00:59,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (2/3) ... [2024-11-09 18:00:59,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9fdf81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:00:59, skipping insertion in model container [2024-11-09 18:00:59,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:00:59" (3/3) ... [2024-11-09 18:00:59,293 INFO L112 eAbstractionObserver]: Analyzing ICFG check_removal_from_set_after_insertion.c [2024-11-09 18:00:59,306 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:00:59,307 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:00:59,371 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:00:59,378 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;@439794e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:00:59,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:00:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 18:00:59,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:59,388 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:59,389 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:59,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash 409718128, now seen corresponding path program 1 times [2024-11-09 18:00:59,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:59,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842667933] [2024-11-09 18:00:59,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:59,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:00:59,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842667933] [2024-11-09 18:00:59,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842667933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:00:59,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:00:59,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:00:59,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462842719] [2024-11-09 18:00:59,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:00:59,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:00:59,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:00:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:00:59,589 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:59,603 INFO L93 Difference]: Finished difference Result 67 states and 99 transitions. [2024-11-09 18:00:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:00:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) Word has length 14 [2024-11-09 18:00:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:59,614 INFO L225 Difference]: With dead ends: 67 [2024-11-09 18:00:59,616 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 18:00:59,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:00:59,625 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:00:59,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:00:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 18:00:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-09 18:00:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-11-09 18:00:59,656 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 14 [2024-11-09 18:00:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:59,656 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-11-09 18:00:59,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-11-09 18:00:59,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 18:00:59,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:59,658 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:59,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:00:59,658 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:59,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash 807279597, now seen corresponding path program 1 times [2024-11-09 18:00:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:59,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952719286] [2024-11-09 18:00:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:59,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:00:59,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952719286] [2024-11-09 18:00:59,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952719286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:00:59,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:00:59,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:00:59,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348339218] [2024-11-09 18:00:59,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:00:59,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:00:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:00:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:00:59,850 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:59,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:59,918 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2024-11-09 18:00:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:00:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) Word has length 17 [2024-11-09 18:00:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:59,921 INFO L225 Difference]: With dead ends: 71 [2024-11-09 18:00:59,922 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 18:00:59,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:00:59,923 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:00:59,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 50 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:00:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 18:00:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2024-11-09 18:00:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-09 18:00:59,932 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 17 [2024-11-09 18:00:59,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:59,932 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-09 18:00:59,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-09 18:00:59,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 18:00:59,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:59,934 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:59,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:00:59,935 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:59,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash -806682130, now seen corresponding path program 1 times [2024-11-09 18:00:59,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:59,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830606323] [2024-11-09 18:00:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:59,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:01:00,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:00,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830606323] [2024-11-09 18:01:00,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830606323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:01:00,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:01:00,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:01:00,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672600882] [2024-11-09 18:01:00,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:01:00,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:01:00,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:00,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:01:00,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:01:00,108 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:00,172 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2024-11-09 18:01:00,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:01:00,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) Word has length 19 [2024-11-09 18:01:00,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:00,174 INFO L225 Difference]: With dead ends: 59 [2024-11-09 18:01:00,174 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 18:01:00,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:01:00,177 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 57 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:00,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 54 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:01:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 18:01:00,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-11-09 18:01:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 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) [2024-11-09 18:01:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-11-09 18:01:00,191 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 19 [2024-11-09 18:01:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:00,192 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-11-09 18:01:00,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-11-09 18:01:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:01:00,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:00,194 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:00,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:01:00,194 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:00,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:00,195 INFO L85 PathProgramCache]: Analyzing trace with hash -729915516, now seen corresponding path program 1 times [2024-11-09 18:01:00,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:00,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396423092] [2024-11-09 18:01:00,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:00,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:01:00,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:00,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396423092] [2024-11-09 18:01:00,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396423092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:01:00,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:01:00,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:01:00,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803322441] [2024-11-09 18:01:00,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:01:00,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:01:00,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:00,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:01:00,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:01:00,331 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:00,351 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2024-11-09 18:01:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:01:00,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) Word has length 27 [2024-11-09 18:01:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:00,352 INFO L225 Difference]: With dead ends: 63 [2024-11-09 18:01:00,352 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 18:01:00,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:01:00,354 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:00,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 18:01:00,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 18:01:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2024-11-09 18:01:00,361 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 27 [2024-11-09 18:01:00,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:00,361 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2024-11-09 18:01:00,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,362 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2024-11-09 18:01:00,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:01:00,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:00,363 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:00,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:01:00,363 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:00,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:00,364 INFO L85 PathProgramCache]: Analyzing trace with hash 445101347, now seen corresponding path program 1 times [2024-11-09 18:01:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:00,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674059154] [2024-11-09 18:01:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:00,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:01:00,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674059154] [2024-11-09 18:01:00,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674059154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:01:00,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:01:00,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:01:00,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802094417] [2024-11-09 18:01:00,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:01:00,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:01:00,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:00,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:01:00,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:01:00,503 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:00,541 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2024-11-09 18:01:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:01:00,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) Word has length 27 [2024-11-09 18:01:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:00,545 INFO L225 Difference]: With dead ends: 70 [2024-11-09 18:01:00,546 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 18:01:00,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:01:00,547 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:00,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 103 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 18:01:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2024-11-09 18:01:00,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2024-11-09 18:01:00,559 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 27 [2024-11-09 18:01:00,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:00,560 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2024-11-09 18:01:00,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2024-11-09 18:01:00,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 18:01:00,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:00,561 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:00,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 18:01:00,562 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:00,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1346753511, now seen corresponding path program 1 times [2024-11-09 18:01:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:00,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823673848] [2024-11-09 18:01:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:00,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:01:00,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823673848] [2024-11-09 18:01:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823673848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:01:00,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:01:00,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:01:00,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539478112] [2024-11-09 18:01:00,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:01:00,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:01:00,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:00,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:01:00,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:01:00,637 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:00,667 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2024-11-09 18:01:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:01:00,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) Word has length 28 [2024-11-09 18:01:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:00,669 INFO L225 Difference]: With dead ends: 54 [2024-11-09 18:01:00,669 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 18:01:00,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:01:00,670 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 24 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:00,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 51 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 18:01:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-09 18:01:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-09 18:01:00,684 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 28 [2024-11-09 18:01:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:00,686 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-09 18:01:00,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:00,686 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-09 18:01:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 18:01:00,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:00,687 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:00,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 18:01:00,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:00,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:00,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1863329673, now seen corresponding path program 1 times [2024-11-09 18:01:00,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:00,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138734461] [2024-11-09 18:01:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:00,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:01:00,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:00,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138734461] [2024-11-09 18:01:00,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138734461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335477035] [2024-11-09 18:01:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:00,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:00,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:01:00,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:01:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:01:00,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:01:01,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 18:01:01,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335477035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:01,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:01,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 18:01:01,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531422852] [2024-11-09 18:01:01,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:01,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 18:01:01,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:01,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 18:01:01,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:01:01,091 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:01,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:01,308 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2024-11-09 18:01:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 18:01:01,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-09 18:01:01,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:01,312 INFO L225 Difference]: With dead ends: 144 [2024-11-09 18:01:01,313 INFO L226 Difference]: Without dead ends: 108 [2024-11-09 18:01:01,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:01:01,314 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 128 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:01,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 104 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:01:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-09 18:01:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 61. [2024-11-09 18:01:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-09 18:01:01,336 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 34 [2024-11-09 18:01:01,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:01,336 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-09 18:01:01,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-09 18:01:01,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 18:01:01,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:01,337 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:01,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:01:01,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:01,539 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:01,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash 48300246, now seen corresponding path program 2 times [2024-11-09 18:01:01,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:01,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457243999] [2024-11-09 18:01:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:01,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:01:01,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:01,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457243999] [2024-11-09 18:01:01,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457243999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:01:01,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:01:01,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:01:01,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221132187] [2024-11-09 18:01:01,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:01:01,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:01:01,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:01:01,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:01:01,632 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:01,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:01,647 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-11-09 18:01:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:01:01,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) Word has length 44 [2024-11-09 18:01:01,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:01,650 INFO L225 Difference]: With dead ends: 79 [2024-11-09 18:01:01,650 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 18:01:01,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:01:01,651 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:01,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 67 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:01,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 18:01:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-09 18:01:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.15) internal successors, (69), 60 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2024-11-09 18:01:01,665 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 44 [2024-11-09 18:01:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:01,665 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2024-11-09 18:01:01,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2024-11-09 18:01:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 18:01:01,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:01,668 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:01,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 18:01:01,668 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:01,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:01,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1401609943, now seen corresponding path program 1 times [2024-11-09 18:01:01,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:01,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723719263] [2024-11-09 18:01:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:01,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:01:01,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:01,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723719263] [2024-11-09 18:01:01,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723719263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:01,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312814568] [2024-11-09 18:01:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:01,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:01,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:01,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:01:01,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:01:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:01,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 18:01:01,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:01:02,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:01:02,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312814568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:02,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:02,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-09 18:01:02,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93851264] [2024-11-09 18:01:02,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:02,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 18:01:02,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:02,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 18:01:02,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:01:02,187 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 18 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:02,461 INFO L93 Difference]: Finished difference Result 241 states and 271 transitions. [2024-11-09 18:01:02,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:01:02,462 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 18 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-09 18:01:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:02,463 INFO L225 Difference]: With dead ends: 241 [2024-11-09 18:01:02,463 INFO L226 Difference]: Without dead ends: 192 [2024-11-09 18:01:02,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:01:02,465 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 341 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:02,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 166 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:01:02,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-09 18:01:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 73. [2024-11-09 18:01:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.125) internal successors, (81), 72 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:02,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2024-11-09 18:01:02,481 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 44 [2024-11-09 18:01:02,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:02,481 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2024-11-09 18:01:02,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 18 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:02,482 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2024-11-09 18:01:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 18:01:02,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:02,483 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:02,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:01:02,683 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,SelfDestructingSolverStorable8 [2024-11-09 18:01:02,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:02,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1998256431, now seen corresponding path program 2 times [2024-11-09 18:01:02,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:02,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051502853] [2024-11-09 18:01:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:02,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:01:03,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051502853] [2024-11-09 18:01:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051502853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195447728] [2024-11-09 18:01:03,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:01:03,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:03,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:03,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:01:03,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:01:03,198 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:01:03,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:01:03,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 18:01:03,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:01:03,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:03,707 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:01:03,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195447728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:03,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:03,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-09 18:01:03,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464064595] [2024-11-09 18:01:03,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:03,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 18:01:03,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 18:01:03,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 18:01:03,711 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 36 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:04,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:04,366 INFO L93 Difference]: Finished difference Result 433 states and 481 transitions. [2024-11-09 18:01:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 18:01:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 36 states have internal predecessors, (98), 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) Word has length 56 [2024-11-09 18:01:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:04,369 INFO L225 Difference]: With dead ends: 433 [2024-11-09 18:01:04,369 INFO L226 Difference]: Without dead ends: 384 [2024-11-09 18:01:04,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 18:01:04,371 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 955 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:04,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 294 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:01:04,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-09 18:01:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 97. [2024-11-09 18:01:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.09375) internal successors, (105), 96 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2024-11-09 18:01:04,396 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 56 [2024-11-09 18:01:04,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:04,397 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2024-11-09 18:01:04,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 36 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2024-11-09 18:01:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 18:01:04,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:04,401 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:04,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:01:04,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:04,603 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:04,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash 594633157, now seen corresponding path program 3 times [2024-11-09 18:01:04,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:04,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195486480] [2024-11-09 18:01:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:04,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:01:05,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:05,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195486480] [2024-11-09 18:01:05,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195486480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:05,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232978759] [2024-11-09 18:01:05,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:01:05,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:05,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:05,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:01:05,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:01:05,552 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 18:01:05,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:01:05,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:01:05,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-09 18:01:05,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-09 18:01:05,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232978759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:05,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 4, 4] total 30 [2024-11-09 18:01:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578634911] [2024-11-09 18:01:05,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:05,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 18:01:05,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:05,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 18:01:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=605, Unknown=0, NotChecked=0, Total=930 [2024-11-09 18:01:05,813 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 31 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 30 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:06,703 INFO L93 Difference]: Finished difference Result 493 states and 540 transitions. [2024-11-09 18:01:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 18:01:06,703 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 30 states have internal predecessors, (108), 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) Word has length 80 [2024-11-09 18:01:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:06,707 INFO L225 Difference]: With dead ends: 493 [2024-11-09 18:01:06,707 INFO L226 Difference]: Without dead ends: 444 [2024-11-09 18:01:06,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=935, Invalid=2035, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 18:01:06,710 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1193 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:06,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 311 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:01:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-09 18:01:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 130. [2024-11-09 18:01:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 129 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2024-11-09 18:01:06,737 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 80 [2024-11-09 18:01:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:06,737 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2024-11-09 18:01:06,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 30 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:06,738 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2024-11-09 18:01:06,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 18:01:06,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:06,740 INFO L215 NwaCegarLoop]: trace histogram [24, 23, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:06,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:01:06,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:06,941 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:06,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:06,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1983471747, now seen corresponding path program 1 times [2024-11-09 18:01:06,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:06,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698051382] [2024-11-09 18:01:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:06,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 18:01:07,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:07,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698051382] [2024-11-09 18:01:07,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698051382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:07,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091426236] [2024-11-09 18:01:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:07,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:07,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:07,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:01:07,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:01:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:08,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 18:01:08,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 18:01:08,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 18:01:09,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091426236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:09,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:09,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 75 [2024-11-09 18:01:09,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129399052] [2024-11-09 18:01:09,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:09,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-09 18:01:09,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:09,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-09 18:01:09,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2503, Invalid=3197, Unknown=0, NotChecked=0, Total=5700 [2024-11-09 18:01:09,707 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand has 76 states, 76 states have (on average 2.3552631578947367) internal successors, (179), 75 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:11,777 INFO L93 Difference]: Finished difference Result 911 states and 1010 transitions. [2024-11-09 18:01:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-09 18:01:11,778 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.3552631578947367) internal successors, (179), 75 states have internal predecessors, (179), 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) Word has length 106 [2024-11-09 18:01:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:11,782 INFO L225 Difference]: With dead ends: 911 [2024-11-09 18:01:11,784 INFO L226 Difference]: Without dead ends: 831 [2024-11-09 18:01:11,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3501 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3775, Invalid=6125, Unknown=0, NotChecked=0, Total=9900 [2024-11-09 18:01:11,790 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2346 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:11,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2346 Valid, 555 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:01:11,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-11-09 18:01:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 180. [2024-11-09 18:01:11,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0837988826815643) internal successors, (194), 179 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 194 transitions. [2024-11-09 18:01:11,817 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 194 transitions. Word has length 106 [2024-11-09 18:01:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:11,818 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 194 transitions. [2024-11-09 18:01:11,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.3552631578947367) internal successors, (179), 75 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 194 transitions. [2024-11-09 18:01:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-09 18:01:11,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:11,819 INFO L215 NwaCegarLoop]: trace histogram [49, 48, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:11,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:01:12,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 18:01:12,024 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:12,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash 24546186, now seen corresponding path program 2 times [2024-11-09 18:01:12,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:12,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450632276] [2024-11-09 18:01:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:12,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2413 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 18:01:14,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:14,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450632276] [2024-11-09 18:01:14,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450632276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:14,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711504487] [2024-11-09 18:01:14,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:01:14,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:14,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:14,458 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:01:14,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:01:14,723 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:01:14,723 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:01:14,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 18:01:14,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2413 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 18:01:16,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2413 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 18:01:19,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711504487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:19,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:19,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 150 [2024-11-09 18:01:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082542644] [2024-11-09 18:01:19,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:19,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2024-11-09 18:01:19,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:19,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2024-11-09 18:01:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10003, Invalid=12647, Unknown=0, NotChecked=0, Total=22650 [2024-11-09 18:01:19,022 INFO L87 Difference]: Start difference. First operand 180 states and 194 transitions. Second operand has 151 states, 151 states have (on average 2.1788079470198674) internal successors, (329), 150 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:28,520 INFO L93 Difference]: Finished difference Result 1711 states and 1885 transitions. [2024-11-09 18:01:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-09 18:01:28,521 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 2.1788079470198674) internal successors, (329), 150 states have internal predecessors, (329), 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) Word has length 156 [2024-11-09 18:01:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:28,527 INFO L225 Difference]: With dead ends: 1711 [2024-11-09 18:01:28,527 INFO L226 Difference]: Without dead ends: 1631 [2024-11-09 18:01:28,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14501 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=15050, Invalid=24750, Unknown=0, NotChecked=0, Total=39800 [2024-11-09 18:01:28,534 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 7927 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 1258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7927 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1258 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:28,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7927 Valid, 1046 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1258 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 18:01:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2024-11-09 18:01:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 280. [2024-11-09 18:01:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.053763440860215) internal successors, (294), 279 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 294 transitions. [2024-11-09 18:01:28,564 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 294 transitions. Word has length 156 [2024-11-09 18:01:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:28,564 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 294 transitions. [2024-11-09 18:01:28,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 2.1788079470198674) internal successors, (329), 150 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 294 transitions. [2024-11-09 18:01:28,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-09 18:01:28,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:28,567 INFO L215 NwaCegarLoop]: trace histogram [99, 98, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:28,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:01:28,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:28,768 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:28,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2012971608, now seen corresponding path program 3 times [2024-11-09 18:01:28,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:28,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814590391] [2024-11-09 18:01:28,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:28,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9763 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 18:01:36,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:36,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814590391] [2024-11-09 18:01:36,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814590391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:36,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826581856] [2024-11-09 18:01:36,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:01:36,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:36,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:36,593 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:01:36,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:01:36,874 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:01:36,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:01:36,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:01:36,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9763 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9755 trivial. 0 not checked. [2024-11-09 18:01:37,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9763 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9755 trivial. 0 not checked. [2024-11-09 18:01:37,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826581856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:37,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:37,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 108 [2024-11-09 18:01:37,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955178895] [2024-11-09 18:01:37,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:37,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-09 18:01:37,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-09 18:01:37,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5478, Invalid=6294, Unknown=0, NotChecked=0, Total=11772 [2024-11-09 18:01:37,633 INFO L87 Difference]: Start difference. First operand 280 states and 294 transitions. Second operand has 109 states, 109 states have (on average 2.706422018348624) internal successors, (295), 108 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:53,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:53,978 INFO L93 Difference]: Finished difference Result 1971 states and 2201 transitions. [2024-11-09 18:01:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2024-11-09 18:01:53,979 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.706422018348624) internal successors, (295), 108 states have internal predecessors, (295), 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) Word has length 256 [2024-11-09 18:01:53,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:53,985 INFO L225 Difference]: With dead ends: 1971 [2024-11-09 18:01:53,985 INFO L226 Difference]: Without dead ends: 1891 [2024-11-09 18:01:53,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21124 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=32244, Invalid=64166, Unknown=0, NotChecked=0, Total=96410 [2024-11-09 18:01:53,992 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 6669 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 1701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6669 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1701 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:53,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6669 Valid, 1030 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1701 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 18:01:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2024-11-09 18:01:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 884. [2024-11-09 18:01:54,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 1.130237825594564) internal successors, (998), 883 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:54,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 998 transitions. [2024-11-09 18:01:54,249 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 998 transitions. Word has length 256 [2024-11-09 18:01:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:54,250 INFO L471 AbstractCegarLoop]: Abstraction has 884 states and 998 transitions. [2024-11-09 18:01:54,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.706422018348624) internal successors, (295), 108 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 998 transitions. [2024-11-09 18:01:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-09 18:01:54,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:54,253 INFO L215 NwaCegarLoop]: trace histogram [102, 101, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:54,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:01:54,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:54,454 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:54,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1422739881, now seen corresponding path program 1 times [2024-11-09 18:01:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:54,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487645145] [2024-11-09 18:01:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:54,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10375 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-09 18:02:01,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:01,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487645145] [2024-11-09 18:02:01,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487645145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:01,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690177595] [2024-11-09 18:02:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:01,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:01,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:01,692 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:02:01,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:02:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:02,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-09 18:02:02,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10375 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-09 18:02:06,899 INFO L311 TraceCheckSpWp]: Computing backward predicates...