./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_running-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_running-1.i -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 7b8d5eeb19c9858fcb0b2998e8b2a6094462b42b704d3f987f7fa52a623cb169 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 08:56:46,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 08:56:46,732 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 08:56:46,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 08:56:46,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 08:56:46,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 08:56:46,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 08:56:46,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 08:56:46,764 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 08:56:46,764 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 08:56:46,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 08:56:46,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 08:56:46,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 08:56:46,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 08:56:46,766 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 08:56:46,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 08:56:46,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 08:56:46,767 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 08:56:46,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 08:56:46,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 08:56:46,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 08:56:46,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 08:56:46,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 08:56:46,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 08:56:46,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 08:56:46,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 08:56:46,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 08:56:46,771 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 08:56:46,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 08:56:46,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 08:56:46,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 08:56:46,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 08:56:46,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:56:46,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 08:56:46,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 08:56:46,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 08:56:46,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 08:56:46,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 08:56:46,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 08:56:46,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 08:56:46,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 08:56:46,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 08:56:46,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b8d5eeb19c9858fcb0b2998e8b2a6094462b42b704d3f987f7fa52a623cb169 [2024-11-18 08:56:47,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 08:56:47,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 08:56:47,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 08:56:47,062 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 08:56:47,062 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 08:56:47,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_running-1.i [2024-11-18 08:56:48,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 08:56:48,528 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 08:56:48,528 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_running-1.i [2024-11-18 08:56:48,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77628f77d/5918e6a4a5be49febd9abed4d6e7861a/FLAG5ac4c29c7 [2024-11-18 08:56:48,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77628f77d/5918e6a4a5be49febd9abed4d6e7861a [2024-11-18 08:56:48,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 08:56:48,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 08:56:48,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 08:56:48,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 08:56:48,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 08:56:48,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab90aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48, skipping insertion in model container [2024-11-18 08:56:48,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,580 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 08:56:48,707 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-examples/standard_running-1.i[811,824] [2024-11-18 08:56:48,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:56:48,725 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 08:56:48,734 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-examples/standard_running-1.i[811,824] [2024-11-18 08:56:48,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:56:48,752 INFO L204 MainTranslator]: Completed translation [2024-11-18 08:56:48,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48 WrapperNode [2024-11-18 08:56:48,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 08:56:48,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 08:56:48,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 08:56:48,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 08:56:48,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,781 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2024-11-18 08:56:48,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 08:56:48,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 08:56:48,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 08:56:48,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 08:56:48,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,796 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,806 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2024-11-18 08:56:48,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 08:56:48,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 08:56:48,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 08:56:48,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 08:56:48,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (1/1) ... [2024-11-18 08:56:48,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:56:48,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:48,853 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) [2024-11-18 08:56:48,855 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 [2024-11-18 08:56:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 08:56:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 08:56:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 08:56:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 08:56:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 08:56:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 08:56:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 08:56:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 08:56:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 08:56:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 08:56:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 08:56:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 08:56:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 08:56:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 08:56:48,946 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 08:56:48,948 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 08:56:49,126 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-18 08:56:49,127 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 08:56:49,140 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 08:56:49,140 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 08:56:49,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:49 BoogieIcfgContainer [2024-11-18 08:56:49,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 08:56:49,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 08:56:49,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 08:56:49,145 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 08:56:49,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:56:48" (1/3) ... [2024-11-18 08:56:49,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39083c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:56:49, skipping insertion in model container [2024-11-18 08:56:49,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:48" (2/3) ... [2024-11-18 08:56:49,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39083c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:56:49, skipping insertion in model container [2024-11-18 08:56:49,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:49" (3/3) ... [2024-11-18 08:56:49,147 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_running-1.i [2024-11-18 08:56:49,161 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 08:56:49,161 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 08:56:49,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 08:56:49,211 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;@2d86d16f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 08:56:49,211 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 08:56:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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) [2024-11-18 08:56:49,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 08:56:49,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:49,219 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:49,220 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:49,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2030235279, now seen corresponding path program 1 times [2024-11-18 08:56:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:49,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332944677] [2024-11-18 08:56:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:49,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:56:49,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:49,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332944677] [2024-11-18 08:56:49,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332944677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:56:49,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:56:49,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:56:49,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686539294] [2024-11-18 08:56:49,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:56:49,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:56:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:56:49,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:56:49,396 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-18 08:56:49,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:49,445 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2024-11-18 08:56:49,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:56:49,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-18 08:56:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:49,453 INFO L225 Difference]: With dead ends: 56 [2024-11-18 08:56:49,453 INFO L226 Difference]: Without dead ends: 32 [2024-11-18 08:56:49,455 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 [2024-11-18 08:56:49,458 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:49,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 33 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:56:49,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-18 08:56:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2024-11-18 08:56:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 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) [2024-11-18 08:56:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-11-18 08:56:49,483 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 10 [2024-11-18 08:56:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:49,483 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-11-18 08:56:49,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-18 08:56:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-11-18 08:56:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 08:56:49,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:49,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:49,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 08:56:49,485 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:49,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1221461665, now seen corresponding path program 1 times [2024-11-18 08:56:49,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:49,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351407104] [2024-11-18 08:56:49,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:49,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 08:56:49,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:49,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351407104] [2024-11-18 08:56:49,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351407104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:49,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566386368] [2024-11-18 08:56:49,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:49,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:49,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:49,588 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) [2024-11-18 08:56:49,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 08:56:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:49,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:56:49,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:56:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 08:56:49,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:56:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 08:56:49,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566386368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:56:49,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:56:49,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 08:56:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477431397] [2024-11-18 08:56:49,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:56:49,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 08:56:49,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 08:56:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:56:49,728 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2024-11-18 08:56:49,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:49,842 INFO L93 Difference]: Finished difference Result 77 states and 114 transitions. [2024-11-18 08:56:49,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:56:49,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 22 [2024-11-18 08:56:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:49,844 INFO L225 Difference]: With dead ends: 77 [2024-11-18 08:56:49,844 INFO L226 Difference]: Without dead ends: 59 [2024-11-18 08:56:49,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:56:49,845 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 145 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:49,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 38 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:56:49,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-18 08:56:49,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-18 08:56:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 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) [2024-11-18 08:56:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2024-11-18 08:56:49,859 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 22 [2024-11-18 08:56:49,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:49,860 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2024-11-18 08:56:49,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2024-11-18 08:56:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2024-11-18 08:56:49,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 08:56:49,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:49,862 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:49,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 08:56:50,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:50,067 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:50,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1687151938, now seen corresponding path program 2 times [2024-11-18 08:56:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:50,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487253804] [2024-11-18 08:56:50,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:56:50,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:50,135 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:56:50,135 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-18 08:56:50,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:50,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487253804] [2024-11-18 08:56:50,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487253804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:56:50,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:56:50,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 08:56:50,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691822199] [2024-11-18 08:56:50,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:56:50,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 08:56:50,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:50,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 08:56:50,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 08:56:50,425 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-18 08:56:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:50,487 INFO L93 Difference]: Finished difference Result 111 states and 162 transitions. [2024-11-18 08:56:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:56:50,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 58 [2024-11-18 08:56:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:50,489 INFO L225 Difference]: With dead ends: 111 [2024-11-18 08:56:50,491 INFO L226 Difference]: Without dead ends: 83 [2024-11-18 08:56:50,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 08:56:50,492 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:50,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:56:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-18 08:56:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2024-11-18 08:56:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 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) [2024-11-18 08:56:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 101 transitions. [2024-11-18 08:56:50,508 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 101 transitions. Word has length 58 [2024-11-18 08:56:50,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:50,508 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 101 transitions. [2024-11-18 08:56:50,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-18 08:56:50,509 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 101 transitions. [2024-11-18 08:56:50,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 08:56:50,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:50,510 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:50,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 08:56:50,510 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:50,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:50,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1354664638, now seen corresponding path program 1 times [2024-11-18 08:56:50,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:50,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377978096] [2024-11-18 08:56:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:50,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-18 08:56:50,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:50,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377978096] [2024-11-18 08:56:50,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377978096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:50,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983103530] [2024-11-18 08:56:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:50,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:50,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:50,687 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) [2024-11-18 08:56:50,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 08:56:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:50,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 08:56:50,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:56:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-18 08:56:50,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:56:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-18 08:56:50,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983103530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:56:50,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:56:50,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 08:56:50,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852029816] [2024-11-18 08:56:50,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:56:50,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 08:56:50,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:50,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 08:56:50,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 08:56:50,873 INFO L87 Difference]: Start difference. First operand 75 states and 101 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 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) [2024-11-18 08:56:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:51,056 INFO L93 Difference]: Finished difference Result 235 states and 340 transitions. [2024-11-18 08:56:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 08:56:51,057 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 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 58 [2024-11-18 08:56:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:51,058 INFO L225 Difference]: With dead ends: 235 [2024-11-18 08:56:51,058 INFO L226 Difference]: Without dead ends: 171 [2024-11-18 08:56:51,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 08:56:51,059 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 236 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:51,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 88 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 08:56:51,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-18 08:56:51,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-18 08:56:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.3705882352941177) internal successors, (233), 170 states have internal predecessors, (233), 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) [2024-11-18 08:56:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 233 transitions. [2024-11-18 08:56:51,081 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 233 transitions. Word has length 58 [2024-11-18 08:56:51,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:51,081 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 233 transitions. [2024-11-18 08:56:51,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 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) [2024-11-18 08:56:51,082 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 233 transitions. [2024-11-18 08:56:51,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 08:56:51,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:51,084 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:51,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 08:56:51,288 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,SelfDestructingSolverStorable3 [2024-11-18 08:56:51,290 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:51,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:51,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1703650066, now seen corresponding path program 2 times [2024-11-18 08:56:51,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:51,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815598641] [2024-11-18 08:56:51,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:56:51,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:51,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:56:51,348 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-11-18 08:56:51,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815598641] [2024-11-18 08:56:51,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815598641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211365401] [2024-11-18 08:56:51,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:56:51,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:51,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:51,625 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) [2024-11-18 08:56:51,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 08:56:51,751 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:56:51,751 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:51,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:56:51,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:56:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-11-18 08:56:51,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:56:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-11-18 08:56:52,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211365401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:56:52,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:56:52,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 08:56:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60112995] [2024-11-18 08:56:52,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:56:52,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 08:56:52,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 08:56:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:56:52,028 INFO L87 Difference]: Start difference. First operand 171 states and 233 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:52,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:52,388 INFO L93 Difference]: Finished difference Result 511 states and 742 transitions. [2024-11-18 08:56:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 08:56:52,389 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-11-18 08:56:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:52,391 INFO L225 Difference]: With dead ends: 511 [2024-11-18 08:56:52,391 INFO L226 Difference]: Without dead ends: 363 [2024-11-18 08:56:52,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:56:52,392 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 886 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:52,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 152 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 08:56:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-18 08:56:52,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-11-18 08:56:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.37292817679558) internal successors, (497), 362 states have internal predecessors, (497), 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) [2024-11-18 08:56:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 497 transitions. [2024-11-18 08:56:52,409 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 497 transitions. Word has length 130 [2024-11-18 08:56:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:52,409 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 497 transitions. [2024-11-18 08:56:52,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:56:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 497 transitions. [2024-11-18 08:56:52,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-18 08:56:52,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:52,414 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:52,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 08:56:52,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:52,621 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:52,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:52,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1176972730, now seen corresponding path program 3 times [2024-11-18 08:56:52,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:52,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920996800] [2024-11-18 08:56:52,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:56:52,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:52,674 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:56:52,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 64 proven. 169 refuted. 0 times theorem prover too weak. 2605 trivial. 0 not checked. [2024-11-18 08:56:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920996800] [2024-11-18 08:56:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920996800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:53,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811424054] [2024-11-18 08:56:53,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:56:53,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:53,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:53,015 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) [2024-11-18 08:56:53,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 08:56:53,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:56:53,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:56:53,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:56:53,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:56:53,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-18 08:56:53,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 08:56:53,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 25 [2024-11-18 08:56:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 85 proven. 127 refuted. 0 times theorem prover too weak. 2626 trivial. 0 not checked. [2024-11-18 08:56:53,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:56:53,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-18 08:56:53,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-18 08:56:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 64 proven. 148 refuted. 0 times theorem prover too weak. 2626 trivial. 0 not checked. [2024-11-18 08:56:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811424054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:56:53,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:56:53,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 23 [2024-11-18 08:56:53,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843296068] [2024-11-18 08:56:53,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:56:53,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 08:56:53,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:53,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 08:56:53,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2024-11-18 08:56:53,904 INFO L87 Difference]: Start difference. First operand 363 states and 497 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 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) [2024-11-18 08:56:54,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:54,212 INFO L93 Difference]: Finished difference Result 890 states and 1157 transitions. [2024-11-18 08:56:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 08:56:54,212 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 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) Word has length 274 [2024-11-18 08:56:54,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:54,217 INFO L225 Difference]: With dead ends: 890 [2024-11-18 08:56:54,218 INFO L226 Difference]: Without dead ends: 886 [2024-11-18 08:56:54,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 534 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-18 08:56:54,219 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 181 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:54,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 135 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:56:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-18 08:56:54,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 609. [2024-11-18 08:56:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 1.40625) internal successors, (855), 608 states have internal predecessors, (855), 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) [2024-11-18 08:56:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 855 transitions. [2024-11-18 08:56:54,257 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 855 transitions. Word has length 274 [2024-11-18 08:56:54,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:54,257 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 855 transitions. [2024-11-18 08:56:54,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 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) [2024-11-18 08:56:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 855 transitions. [2024-11-18 08:56:54,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-18 08:56:54,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:54,264 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:54,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 08:56:54,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:54,469 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:54,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash -496914360, now seen corresponding path program 1 times [2024-11-18 08:56:54,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:54,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448492981] [2024-11-18 08:56:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:54,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2024-11-18 08:56:55,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:56:55,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448492981] [2024-11-18 08:56:55,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448492981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:56:55,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096145354] [2024-11-18 08:56:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:56:55,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:55,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:56:55,399 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) [2024-11-18 08:56:55,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 08:56:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:56:55,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 08:56:55,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:56:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2024-11-18 08:56:55,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:56:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2024-11-18 08:56:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096145354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:56:56,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:56:56,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-18 08:56:56,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152176727] [2024-11-18 08:56:56,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:56:56,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 08:56:56,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:56:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 08:56:56,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:56:56,396 INFO L87 Difference]: Start difference. First operand 609 states and 855 transitions. Second operand has 49 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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) [2024-11-18 08:56:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:56:57,438 INFO L93 Difference]: Finished difference Result 2117 states and 2992 transitions. [2024-11-18 08:56:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 08:56:57,438 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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 274 [2024-11-18 08:56:57,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:56:57,442 INFO L225 Difference]: With dead ends: 2117 [2024-11-18 08:56:57,442 INFO L226 Difference]: Without dead ends: 1555 [2024-11-18 08:56:57,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:56:57,445 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2875 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2875 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 08:56:57,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2875 Valid, 290 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 08:56:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2024-11-18 08:56:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1257. [2024-11-18 08:56:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1256 states have (on average 1.4068471337579618) internal successors, (1767), 1256 states have internal predecessors, (1767), 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) [2024-11-18 08:56:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1767 transitions. [2024-11-18 08:56:57,475 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1767 transitions. Word has length 274 [2024-11-18 08:56:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:56:57,476 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1767 transitions. [2024-11-18 08:56:57,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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) [2024-11-18 08:56:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1767 transitions. [2024-11-18 08:56:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2024-11-18 08:56:57,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:56:57,484 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:56:57,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 08:56:57,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:56:57,689 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:56:57,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:56:57,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1691798792, now seen corresponding path program 2 times [2024-11-18 08:56:57,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:56:57,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382504383] [2024-11-18 08:56:57,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:56:57,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:56:57,826 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:56:57,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2024-11-18 08:57:00,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:57:00,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382504383] [2024-11-18 08:57:00,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382504383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:57:00,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726832738] [2024-11-18 08:57:00,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:57:00,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:00,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:57:00,525 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) [2024-11-18 08:57:00,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 08:57:00,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:57:00,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:00,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 08:57:00,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:57:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2024-11-18 08:57:01,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:57:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2024-11-18 08:57:03,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726832738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:57:03,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:57:03,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-18 08:57:03,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437441751] [2024-11-18 08:57:03,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:57:03,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-18 08:57:03,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:57:03,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-18 08:57:03,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 08:57:03,090 INFO L87 Difference]: Start difference. First operand 1257 states and 1767 transitions. Second operand has 97 states, 97 states have (on average 2.1649484536082473) internal successors, (210), 97 states have internal predecessors, (210), 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) [2024-11-18 08:57:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:57:08,231 INFO L93 Difference]: Finished difference Result 4301 states and 6088 transitions. [2024-11-18 08:57:08,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-18 08:57:08,231 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.1649484536082473) internal successors, (210), 97 states have internal predecessors, (210), 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 562 [2024-11-18 08:57:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:57:08,240 INFO L225 Difference]: With dead ends: 4301 [2024-11-18 08:57:08,240 INFO L226 Difference]: Without dead ends: 3139 [2024-11-18 08:57:08,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1076 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 08:57:08,244 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 5033 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5033 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:57:08,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5033 Valid, 608 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 08:57:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2024-11-18 08:57:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2553. [2024-11-18 08:57:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2552 states have (on average 1.4071316614420062) internal successors, (3591), 2552 states have internal predecessors, (3591), 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) [2024-11-18 08:57:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3591 transitions. [2024-11-18 08:57:08,302 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3591 transitions. Word has length 562 [2024-11-18 08:57:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:57:08,303 INFO L471 AbstractCegarLoop]: Abstraction has 2553 states and 3591 transitions. [2024-11-18 08:57:08,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.1649484536082473) internal successors, (210), 97 states have internal predecessors, (210), 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) [2024-11-18 08:57:08,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3591 transitions. [2024-11-18 08:57:08,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2024-11-18 08:57:08,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:57:08,322 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:57:08,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 08:57:08,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:08,523 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:57:08,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:57:08,524 INFO L85 PathProgramCache]: Analyzing trace with hash 483563608, now seen corresponding path program 3 times [2024-11-18 08:57:08,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:57:08,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995351685] [2024-11-18 08:57:08,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:57:08,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:57:08,655 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 08:57:08,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 52734 backedges. 463 proven. 1391 refuted. 0 times theorem prover too weak. 50880 trivial. 0 not checked. [2024-11-18 08:57:09,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:57:09,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995351685] [2024-11-18 08:57:09,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995351685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:57:09,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759040766] [2024-11-18 08:57:09,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:57:09,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:09,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:57:09,238 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) [2024-11-18 08:57:09,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 08:57:09,620 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 08:57:09,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:09,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 08:57:09,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:57:09,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-18 08:57:09,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-18 08:57:11,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 08:57:11,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2024-11-18 08:57:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 52734 backedges. 464 proven. 1206 refuted. 0 times theorem prover too weak. 51064 trivial. 0 not checked. [2024-11-18 08:57:11,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:57:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 52734 backedges. 463 proven. 1207 refuted. 0 times theorem prover too weak. 51064 trivial. 0 not checked. [2024-11-18 08:57:12,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759040766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:57:12,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:57:12,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 12] total 35 [2024-11-18 08:57:12,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280710756] [2024-11-18 08:57:12,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:57:12,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 08:57:12,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:57:12,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 08:57:12,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 08:57:12,634 INFO L87 Difference]: Start difference. First operand 2553 states and 3591 transitions. Second operand has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:57:13,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:57:13,844 INFO L93 Difference]: Finished difference Result 11732 states and 15742 transitions. [2024-11-18 08:57:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-18 08:57:13,844 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1138 [2024-11-18 08:57:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:57:13,876 INFO L225 Difference]: With dead ends: 11732 [2024-11-18 08:57:13,877 INFO L226 Difference]: Without dead ends: 11728 [2024-11-18 08:57:13,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2329 GetRequests, 2260 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=880, Invalid=3676, Unknown=0, NotChecked=0, Total=4556 [2024-11-18 08:57:13,885 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 734 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 08:57:13,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 214 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 08:57:13,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11728 states. [2024-11-18 08:57:14,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11728 to 4637. [2024-11-18 08:57:14,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4637 states, 4636 states have (on average 1.4281708369283865) internal successors, (6621), 4636 states have internal predecessors, (6621), 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) [2024-11-18 08:57:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4637 states to 4637 states and 6621 transitions. [2024-11-18 08:57:14,047 INFO L78 Accepts]: Start accepts. Automaton has 4637 states and 6621 transitions. Word has length 1138 [2024-11-18 08:57:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:57:14,048 INFO L471 AbstractCegarLoop]: Abstraction has 4637 states and 6621 transitions. [2024-11-18 08:57:14,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:57:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4637 states and 6621 transitions. [2024-11-18 08:57:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2024-11-18 08:57:14,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:57:14,072 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 92, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:57:14,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 08:57:14,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:14,277 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:57:14,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:57:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash -537504746, now seen corresponding path program 4 times [2024-11-18 08:57:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:57:14,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549581754] [2024-11-18 08:57:14,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:57:14,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:57:15,649 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:57:15,649 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 52734 backedges. 466 proven. 43432 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-18 08:57:41,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:57:41,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549581754] [2024-11-18 08:57:41,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549581754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:57:41,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975372983] [2024-11-18 08:57:41,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:57:41,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:57:41,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:57:41,396 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) [2024-11-18 08:57:41,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 08:57:41,925 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:57:41,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:57:41,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 379 conjuncts are in the unsatisfiable core [2024-11-18 08:57:41,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:57:42,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-18 08:57:42,318 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2024-11-18 08:57:42,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-18 08:57:42,687 INFO L349 Elim1Store]: treesize reduction 46, result has 31.3 percent of original size [2024-11-18 08:57:42,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38