/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:53:20,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:53:20,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:53:21,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 02:53:21,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:53:21,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:53:21,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:53:21,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:53:21,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:53:21,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:53:21,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:53:21,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:53:21,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:53:21,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:53:21,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:53:21,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:53:21,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 02:53:21,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:53:21,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:53:21,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:53:21,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:53:21,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:53:21,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:53:21,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:53:21,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:53:21,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:53:21,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:53:21,087 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:53:21,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:53:21,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:53:21,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:53:21,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:53:21,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:53:21,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:53:21,088 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:53:21,088 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:53:21,088 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:53:21,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:53:21,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:53:21,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:53:21,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:53:21,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:53:21,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:53:21,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:53:21,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:53:21,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:53:21,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:53:21,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:53:21,090 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:53:21,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:53:21,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:53:21,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:53:21,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:53:21,091 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:53:21,091 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:53:21,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:53:21,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:53:21,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:53:21,346 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:53:21,347 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:53:21,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i [2022-01-11 02:53:21,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a8084e80/da19fcae47e34ee1b7a4adbc4b85fb26/FLAG8ba7adaa0 [2022-01-11 02:53:21,784 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:53:21,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i [2022-01-11 02:53:21,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a8084e80/da19fcae47e34ee1b7a4adbc4b85fb26/FLAG8ba7adaa0 [2022-01-11 02:53:22,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a8084e80/da19fcae47e34ee1b7a4adbc4b85fb26 [2022-01-11 02:53:22,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:53:22,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:53:22,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:53:22,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:53:22,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:53:22,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cbba17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22, skipping insertion in model container [2022-01-11 02:53:22,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:53:22,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:53:22,353 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i[816,829] [2022-01-11 02:53:22,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:53:22,381 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:53:22,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i[816,829] [2022-01-11 02:53:22,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:53:22,448 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:53:22,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22 WrapperNode [2022-01-11 02:53:22,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:53:22,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:53:22,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:53:22,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:53:22,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,489 INFO L137 Inliner]: procedures = 18, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2022-01-11 02:53:22,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:53:22,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:53:22,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:53:22,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:53:22,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:53:22,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:53:22,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:53:22,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:53:22,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:22,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:53:22,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:53:22,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 02:53:22,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 02:53:22,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:53:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:53:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 02:53:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 02:53:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:53:22,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:53:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 02:53:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 02:53:22,680 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:53:22,682 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:53:22,867 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:53:22,872 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:53:22,872 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-11 02:53:22,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:53:22 BoogieIcfgContainer [2022-01-11 02:53:22,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:53:22,876 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:53:22,876 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:53:22,877 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:53:22,879 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:53:22" (1/1) ... [2022-01-11 02:53:23,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:53:23 BasicIcfg [2022-01-11 02:53:23,000 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:53:23,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:53:23,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:53:23,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:53:23,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:53:22" (1/4) ... [2022-01-11 02:53:23,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef2ab1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:53:23, skipping insertion in model container [2022-01-11 02:53:23,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:53:22" (2/4) ... [2022-01-11 02:53:23,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef2ab1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:53:23, skipping insertion in model container [2022-01-11 02:53:23,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:53:22" (3/4) ... [2022-01-11 02:53:23,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef2ab1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:53:23, skipping insertion in model container [2022-01-11 02:53:23,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:53:23" (4/4) ... [2022-01-11 02:53:23,007 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy3_ground-1.iTransformedIcfg [2022-01-11 02:53:23,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:53:23,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 02:53:23,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:53:23,045 INFO L339 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:53:23,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 02:53:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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) [2022-01-11 02:53:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 02:53:23,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:53:23,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:53:23,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:53:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:53:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1738567779, now seen corresponding path program 1 times [2022-01-11 02:53:23,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:53:23,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080138525] [2022-01-11 02:53:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:53:23,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:53:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:53:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:53:23,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:53:23,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080138525] [2022-01-11 02:53:23,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080138525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:53:23,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:53:23,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:53:23,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596004338] [2022-01-11 02:53:23,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:53:23,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:53:23,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:53:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:53:23,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:53:23,293 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-01-11 02:53:23,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:53:23,313 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-01-11 02:53:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:53:23,315 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2022-01-11 02:53:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:53:23,321 INFO L225 Difference]: With dead ends: 44 [2022-01-11 02:53:23,321 INFO L226 Difference]: Without dead ends: 20 [2022-01-11 02:53:23,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:53:23,328 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:53:23,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:53:23,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-11 02:53:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-11 02:53:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-01-11 02:53:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-01-11 02:53:23,368 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2022-01-11 02:53:23,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:53:23,369 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-01-11 02:53:23,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-01-11 02:53:23,371 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-01-11 02:53:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 02:53:23,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:53:23,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:53:23,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:53:23,373 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:53:23,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:53:23,376 INFO L85 PathProgramCache]: Analyzing trace with hash -977410841, now seen corresponding path program 1 times [2022-01-11 02:53:23,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:53:23,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624573775] [2022-01-11 02:53:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:53:23,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:53:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:53:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:53:23,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:53:23,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624573775] [2022-01-11 02:53:23,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624573775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:53:23,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:53:23,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:53:23,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903818070] [2022-01-11 02:53:23,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:53:23,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 02:53:23,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:53:23,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 02:53:23,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:53:23,574 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-01-11 02:53:23,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:53:23,587 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-01-11 02:53:23,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 02:53:23,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-01-11 02:53:23,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:53:23,588 INFO L225 Difference]: With dead ends: 38 [2022-01-11 02:53:23,589 INFO L226 Difference]: Without dead ends: 22 [2022-01-11 02:53:23,589 INFO L932 BasicCegarLoop]: 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 [2022-01-11 02:53:23,590 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:53:23,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 42 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:53:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-11 02:53:23,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-01-11 02:53:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2022-01-11 02:53:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-01-11 02:53:23,595 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2022-01-11 02:53:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:53:23,595 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-01-11 02:53:23,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-01-11 02:53:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-01-11 02:53:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 02:53:23,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:53:23,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:53:23,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 02:53:23,597 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:53:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:53:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1744075547, now seen corresponding path program 1 times [2022-01-11 02:53:23,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:53:23,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158313324] [2022-01-11 02:53:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:53:23,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:53:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:53:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 02:53:23,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:53:23,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158313324] [2022-01-11 02:53:23,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158313324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:53:23,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:53:23,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:53:23,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030551966] [2022-01-11 02:53:23,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:53:23,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 02:53:23,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:53:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 02:53:23,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:53:23,759 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-01-11 02:53:23,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:53:23,833 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-01-11 02:53:23,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 02:53:23,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2022-01-11 02:53:23,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:53:23,834 INFO L225 Difference]: With dead ends: 40 [2022-01-11 02:53:23,835 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 02:53:23,839 INFO L932 BasicCegarLoop]: 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 [2022-01-11 02:53:23,842 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:53:23,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:53:23,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 02:53:23,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-01-11 02:53:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2022-01-11 02:53:23,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-01-11 02:53:23,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2022-01-11 02:53:23,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:53:23,850 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-01-11 02:53:23,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-01-11 02:53:23,850 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-01-11 02:53:23,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 02:53:23,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:53:23,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:53:23,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 02:53:23,852 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:53:23,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:53:23,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1244314655, now seen corresponding path program 1 times [2022-01-11 02:53:23,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:53:23,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363485477] [2022-01-11 02:53:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:53:23,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:53:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:53:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 02:53:23,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:53:23,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363485477] [2022-01-11 02:53:23,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363485477] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:53:23,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27576161] [2022-01-11 02:53:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:53:23,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:53:23,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:53:24,001 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) [2022-01-11 02:53:24,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:53:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:53:24,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-11 02:53:24,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:53:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 02:53:24,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:53:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 02:53:24,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27576161] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:53:24,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:53:24,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-11 02:53:24,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619049065] [2022-01-11 02:53:24,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:53:24,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:53:24,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:53:24,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:53:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:53:24,490 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2022-01-11 02:53:24,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:53:24,631 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-01-11 02:53:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:53:24,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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 21 [2022-01-11 02:53:24,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:53:24,633 INFO L225 Difference]: With dead ends: 49 [2022-01-11 02:53:24,633 INFO L226 Difference]: Without dead ends: 30 [2022-01-11 02:53:24,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:53:24,634 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:53:24,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 82 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:53:24,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-11 02:53:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-01-11 02:53:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 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) [2022-01-11 02:53:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-11 02:53:24,640 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 21 [2022-01-11 02:53:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:53:24,640 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-11 02:53:24,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2022-01-11 02:53:24,640 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-11 02:53:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-11 02:53:24,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:53:24,641 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:53:24,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 02:53:24,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:53:24,849 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:53:24,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:53:24,850 INFO L85 PathProgramCache]: Analyzing trace with hash -970765415, now seen corresponding path program 2 times [2022-01-11 02:53:24,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:53:24,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790633495] [2022-01-11 02:53:24,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:53:24,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:53:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:53:25,010 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-11 02:53:25,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:53:25,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790633495] [2022-01-11 02:53:25,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790633495] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:53:25,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613467113] [2022-01-11 02:53:25,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:53:25,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:53:25,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:53:25,012 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) [2022-01-11 02:53:25,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:53:25,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:53:25,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:53:25,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-11 02:53:25,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:53:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 02:53:25,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:53:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-11 02:53:25,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613467113] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:53:25,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:53:25,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-01-11 02:53:25,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575105613] [2022-01-11 02:53:25,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:53:25,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 02:53:25,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:53:25,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 02:53:25,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-11 02:53:25,380 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2022-01-11 02:53:25,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:53:25,637 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2022-01-11 02:53:25,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 02:53:25,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-11 02:53:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:53:25,639 INFO L225 Difference]: With dead ends: 63 [2022-01-11 02:53:25,639 INFO L226 Difference]: Without dead ends: 48 [2022-01-11 02:53:25,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:53:25,640 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:53:25,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 80 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 02:53:25,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-11 02:53:25,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-01-11 02:53:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:53:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-01-11 02:53:25,648 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2022-01-11 02:53:25,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:53:25,648 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-01-11 02:53:25,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2022-01-11 02:53:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-01-11 02:53:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 02:53:25,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:53:25,650 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:53:25,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:53:25,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:53:25,864 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:53:25,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:53:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 896111047, now seen corresponding path program 3 times [2022-01-11 02:53:25,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:53:25,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492039172] [2022-01-11 02:53:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:53:25,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:53:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:53:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-11 02:53:26,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:53:26,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492039172] [2022-01-11 02:53:26,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492039172] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:53:26,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439991679] [2022-01-11 02:53:26,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 02:53:26,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:53:26,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:53:26,049 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) [2022-01-11 02:53:26,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:53:30,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-11 02:53:30,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:53:30,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-11 02:53:30,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:53:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-11 02:53:58,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:54:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-11 02:54:03,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439991679] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:54:03,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:54:03,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2022-01-11 02:54:03,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611990290] [2022-01-11 02:54:03,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:54:03,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-11 02:54:03,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:54:03,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-11 02:54:03,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=220, Unknown=12, NotChecked=0, Total=272 [2022-01-11 02:54:03,488 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:54:16,249 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2022-01-11 02:54:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 02:54:16,249 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-01-11 02:54:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:54:16,250 INFO L225 Difference]: With dead ends: 93 [2022-01-11 02:54:16,250 INFO L226 Difference]: Without dead ends: 56 [2022-01-11 02:54:16,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 40.7s TimeCoverageRelationStatistics Valid=79, Invalid=371, Unknown=12, NotChecked=0, Total=462 [2022-01-11 02:54:16,251 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 77 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:54:16,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 110 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 120 Invalid, 0 Unknown, 10 Unchecked, 3.1s Time] [2022-01-11 02:54:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-11 02:54:16,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-01-11 02:54:16,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:16,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-01-11 02:54:16,292 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 45 [2022-01-11 02:54:16,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:54:16,292 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-01-11 02:54:16,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:54:16,293 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-01-11 02:54:16,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 02:54:16,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:54:16,294 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:54:16,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 02:54:16,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:54:16,503 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:54:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:54:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1364113153, now seen corresponding path program 4 times [2022-01-11 02:54:16,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:54:16,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240770033] [2022-01-11 02:54:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:54:16,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:54:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:54:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-11 02:54:16,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:54:16,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240770033] [2022-01-11 02:54:16,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240770033] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:54:16,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736526489] [2022-01-11 02:54:16,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 02:54:16,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:54:16,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:54:16,796 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) [2022-01-11 02:54:16,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:54:18,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 02:54:18,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:54:18,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-11 02:54:18,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:54:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-11 02:54:33,466 INFO L328 TraceCheckSpWp]: Computing backward predicates...