/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_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:31:05,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:31:05,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:31:05,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 18:31:05,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:31:05,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:31:05,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:31:06,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:31:06,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:31:06,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:31:06,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:31:06,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:31:06,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:31:06,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:31:06,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:31:06,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:31:06,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 18:31:06,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:31:06,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:31:06,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:31:06,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:31:06,031 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:31:06,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:31:06,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:31:06,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:31:06,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:31:06,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:31:06,033 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:31:06,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:31:06,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:31:06,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:31:06,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:31:06,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:31:06,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:31:06,034 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:31:06,034 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:31:06,034 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:31:06,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:31:06,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:31:06,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:31:06,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:31:06,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:31:06,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:31:06,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:31:06,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:31:06,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:31:06,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:31:06,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:31:06,036 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:31:06,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:31:06,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:31:06,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:31:06,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:31:06,052 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:31:06,052 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:31:06,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:31:06,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:31:06,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:31:06,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:31:06,256 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:31:06,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-01-10 18:31:06,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09057ad8d/e2fb1f1a7de4432286be82feef5c38a4/FLAG5b2cd4546 [2022-01-10 18:31:06,692 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:31:06,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-01-10 18:31:06,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09057ad8d/e2fb1f1a7de4432286be82feef5c38a4/FLAG5b2cd4546 [2022-01-10 18:31:06,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09057ad8d/e2fb1f1a7de4432286be82feef5c38a4 [2022-01-10 18:31:06,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:31:06,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:31:06,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:31:06,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:31:06,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:31:06,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:31:06" (1/1) ... [2022-01-10 18:31:06,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4476c3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:06, skipping insertion in model container [2022-01-10 18:31:06,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:31:06" (1/1) ... [2022-01-10 18:31:06,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:31:06,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:31:06,932 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2022-01-10 18:31:06,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:31:06,941 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:31:06,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2022-01-10 18:31:06,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:31:07,010 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:31:07,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07 WrapperNode [2022-01-10 18:31:07,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:31:07,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:31:07,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:31:07,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:31:07,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (1/1) ... [2022-01-10 18:31:07,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (1/1) ... [2022-01-10 18:31:07,086 INFO L137 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 46, calls inlined = 89, statements flattened = 1576 [2022-01-10 18:31:07,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:31:07,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:31:07,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:31:07,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:31:07,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (1/1) ... [2022-01-10 18:31:07,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (1/1) ... [2022-01-10 18:31:07,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (1/1) ... [2022-01-10 18:31:07,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (1/1) ... [2022-01-10 18:31:07,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (1/1) ... [2022-01-10 18:31:07,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (1/1) ... [2022-01-10 18:31:07,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (1/1) ... [2022-01-10 18:31:07,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:31:07,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:31:07,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:31:07,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:31:07,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (1/1) ... [2022-01-10 18:31:07,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:31:07,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:31:07,209 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) [2022-01-10 18:31:07,216 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 [2022-01-10 18:31:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:31:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:31:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:31:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:31:07,330 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:31:07,331 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:31:08,110 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:31:08,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:31:08,123 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 18:31:08,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:31:08 BoogieIcfgContainer [2022-01-10 18:31:08,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:31:08,126 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:31:08,126 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:31:08,128 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:31:08,130 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:31:08" (1/1) ... [2022-01-10 18:31:08,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:31:08 BasicIcfg [2022-01-10 18:31:08,483 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:31:08,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:31:08,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:31:08,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:31:08,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:31:06" (1/4) ... [2022-01-10 18:31:08,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8bf54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:31:08, skipping insertion in model container [2022-01-10 18:31:08,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:07" (2/4) ... [2022-01-10 18:31:08,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8bf54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:31:08, skipping insertion in model container [2022-01-10 18:31:08,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:31:08" (3/4) ... [2022-01-10 18:31:08,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8bf54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:31:08, skipping insertion in model container [2022-01-10 18:31:08,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:31:08" (4/4) ... [2022-01-10 18:31:08,488 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-10 18:31:08,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:31:08,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2022-01-10 18:31:08,537 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:31:08,545 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 [2022-01-10 18:31:08,546 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-01-10 18:31:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 533 states, 495 states have (on average 1.7757575757575759) internal successors, (879), 532 states have internal predecessors, (879), 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) [2022-01-10 18:31:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 18:31:08,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:08,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:08,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:08,578 INFO L85 PathProgramCache]: Analyzing trace with hash -740562496, now seen corresponding path program 1 times [2022-01-10 18:31:08,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:08,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227672370] [2022-01-10 18:31:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:08,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:08,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:08,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227672370] [2022-01-10 18:31:08,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227672370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:08,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:08,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:08,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693414782] [2022-01-10 18:31:08,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:08,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:08,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:08,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:08,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:08,830 INFO L87 Difference]: Start difference. First operand has 533 states, 495 states have (on average 1.7757575757575759) internal successors, (879), 532 states have internal predecessors, (879), 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 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-01-10 18:31:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:09,035 INFO L93 Difference]: Finished difference Result 1281 states and 2093 transitions. [2022-01-10 18:31:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:09,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-01-10 18:31:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:09,057 INFO L225 Difference]: With dead ends: 1281 [2022-01-10 18:31:09,057 INFO L226 Difference]: Without dead ends: 750 [2022-01-10 18:31:09,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:09,068 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 487 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:09,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1492 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:31:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-01-10 18:31:09,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 469. [2022-01-10 18:31:09,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 438 states have (on average 1.6506849315068493) internal successors, (723), 468 states have internal predecessors, (723), 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) [2022-01-10 18:31:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 723 transitions. [2022-01-10 18:31:09,127 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 723 transitions. Word has length 9 [2022-01-10 18:31:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:09,128 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 723 transitions. [2022-01-10 18:31:09,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-01-10 18:31:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 723 transitions. [2022-01-10 18:31:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 18:31:09,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:09,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:09,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:31:09,130 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:09,131 INFO L85 PathProgramCache]: Analyzing trace with hash -564491678, now seen corresponding path program 1 times [2022-01-10 18:31:09,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:09,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366833551] [2022-01-10 18:31:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:09,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:09,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:09,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366833551] [2022-01-10 18:31:09,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366833551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:09,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:09,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:09,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311534684] [2022-01-10 18:31:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:09,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:09,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:09,182 INFO L87 Difference]: Start difference. First operand 469 states and 723 transitions. 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) [2022-01-10 18:31:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:09,240 INFO L93 Difference]: Finished difference Result 1167 states and 1779 transitions. [2022-01-10 18:31:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:09,240 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 [2022-01-10 18:31:09,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:09,243 INFO L225 Difference]: With dead ends: 1167 [2022-01-10 18:31:09,243 INFO L226 Difference]: Without dead ends: 700 [2022-01-10 18:31:09,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:09,245 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 434 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:09,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1259 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-01-10 18:31:09,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 436. [2022-01-10 18:31:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 408 states have (on average 1.6299019607843137) internal successors, (665), 435 states have internal predecessors, (665), 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) [2022-01-10 18:31:09,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 665 transitions. [2022-01-10 18:31:09,255 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 665 transitions. Word has length 10 [2022-01-10 18:31:09,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:09,256 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 665 transitions. [2022-01-10 18:31:09,256 INFO L471 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) [2022-01-10 18:31:09,256 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 665 transitions. [2022-01-10 18:31:09,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 18:31:09,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:09,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:09,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:31:09,257 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:09,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:09,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1795671454, now seen corresponding path program 1 times [2022-01-10 18:31:09,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:09,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379117577] [2022-01-10 18:31:09,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:09,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:09,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:09,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379117577] [2022-01-10 18:31:09,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379117577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:09,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:09,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:09,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137573681] [2022-01-10 18:31:09,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:09,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:09,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:09,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:09,306 INFO L87 Difference]: Start difference. First operand 436 states and 665 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:09,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:09,422 INFO L93 Difference]: Finished difference Result 1317 states and 1969 transitions. [2022-01-10 18:31:09,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:09,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 18:31:09,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:09,426 INFO L225 Difference]: With dead ends: 1317 [2022-01-10 18:31:09,426 INFO L226 Difference]: Without dead ends: 894 [2022-01-10 18:31:09,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:09,427 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 834 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:09,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2191 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:31:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-01-10 18:31:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 391. [2022-01-10 18:31:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 368 states have (on average 1.5896739130434783) internal successors, (585), 390 states have internal predecessors, (585), 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) [2022-01-10 18:31:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 585 transitions. [2022-01-10 18:31:09,436 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 585 transitions. Word has length 14 [2022-01-10 18:31:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:09,437 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 585 transitions. [2022-01-10 18:31:09,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 585 transitions. [2022-01-10 18:31:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 18:31:09,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:09,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:09,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:31:09,438 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:09,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1765099767, now seen corresponding path program 1 times [2022-01-10 18:31:09,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:09,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974805724] [2022-01-10 18:31:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:09,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:09,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:09,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974805724] [2022-01-10 18:31:09,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974805724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:09,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:09,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:09,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107403742] [2022-01-10 18:31:09,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:09,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:09,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:09,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:09,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:09,514 INFO L87 Difference]: Start difference. First operand 391 states and 585 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:09,577 INFO L93 Difference]: Finished difference Result 1229 states and 1818 transitions. [2022-01-10 18:31:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:09,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 18:31:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:09,580 INFO L225 Difference]: With dead ends: 1229 [2022-01-10 18:31:09,580 INFO L226 Difference]: Without dead ends: 851 [2022-01-10 18:31:09,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:09,582 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 784 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:09,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 1804 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-01-10 18:31:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 365. [2022-01-10 18:31:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 344 states have (on average 1.566860465116279) internal successors, (539), 364 states have internal predecessors, (539), 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) [2022-01-10 18:31:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 539 transitions. [2022-01-10 18:31:09,591 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 539 transitions. Word has length 14 [2022-01-10 18:31:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:09,591 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 539 transitions. [2022-01-10 18:31:09,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 539 transitions. [2022-01-10 18:31:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 18:31:09,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:09,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:09,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:31:09,592 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:09,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:09,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1061645084, now seen corresponding path program 1 times [2022-01-10 18:31:09,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:09,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127779736] [2022-01-10 18:31:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:09,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:09,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:09,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127779736] [2022-01-10 18:31:09,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127779736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:09,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:09,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:09,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103716503] [2022-01-10 18:31:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:09,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:09,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:09,619 INFO L87 Difference]: Start difference. First operand 365 states and 539 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-01-10 18:31:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:09,687 INFO L93 Difference]: Finished difference Result 1084 states and 1586 transitions. [2022-01-10 18:31:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:31:09,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 [2022-01-10 18:31:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:09,690 INFO L225 Difference]: With dead ends: 1084 [2022-01-10 18:31:09,690 INFO L226 Difference]: Without dead ends: 847 [2022-01-10 18:31:09,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:09,692 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 1210 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:09,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1210 Valid, 1719 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-01-10 18:31:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 367. [2022-01-10 18:31:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 346 states have (on average 1.5635838150289016) internal successors, (541), 366 states have internal predecessors, (541), 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) [2022-01-10 18:31:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 541 transitions. [2022-01-10 18:31:09,702 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 541 transitions. Word has length 15 [2022-01-10 18:31:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:09,703 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 541 transitions. [2022-01-10 18:31:09,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-01-10 18:31:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 541 transitions. [2022-01-10 18:31:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 18:31:09,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:09,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:09,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:31:09,711 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:09,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:09,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1733131049, now seen corresponding path program 1 times [2022-01-10 18:31:09,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:09,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105036478] [2022-01-10 18:31:09,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:09,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:09,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:09,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105036478] [2022-01-10 18:31:09,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105036478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:09,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:09,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:31:09,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622784519] [2022-01-10 18:31:09,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:09,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:31:09,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:31:09,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:09,786 INFO L87 Difference]: Start difference. First operand 367 states and 541 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:09,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:09,838 INFO L93 Difference]: Finished difference Result 1403 states and 2059 transitions. [2022-01-10 18:31:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:31:09,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-10 18:31:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:09,841 INFO L225 Difference]: With dead ends: 1403 [2022-01-10 18:31:09,841 INFO L226 Difference]: Without dead ends: 1064 [2022-01-10 18:31:09,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:09,844 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 1598 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:09,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1598 Valid, 1991 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-01-10 18:31:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 344. [2022-01-10 18:31:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 324 states have (on average 1.5524691358024691) internal successors, (503), 343 states have internal predecessors, (503), 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) [2022-01-10 18:31:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 503 transitions. [2022-01-10 18:31:09,856 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 503 transitions. Word has length 18 [2022-01-10 18:31:09,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:09,857 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 503 transitions. [2022-01-10 18:31:09,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:09,857 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 503 transitions. [2022-01-10 18:31:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 18:31:09,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:09,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:09,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:31:09,857 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:09,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:09,858 INFO L85 PathProgramCache]: Analyzing trace with hash 922949256, now seen corresponding path program 1 times [2022-01-10 18:31:09,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:09,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765362302] [2022-01-10 18:31:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:09,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:09,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:09,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765362302] [2022-01-10 18:31:09,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765362302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:09,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:09,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:09,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034603700] [2022-01-10 18:31:09,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:09,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:09,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:09,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:09,901 INFO L87 Difference]: Start difference. First operand 344 states and 503 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-01-10 18:31:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:09,944 INFO L93 Difference]: Finished difference Result 1061 states and 1547 transitions. [2022-01-10 18:31:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:31:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 18:31:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:09,947 INFO L225 Difference]: With dead ends: 1061 [2022-01-10 18:31:09,947 INFO L226 Difference]: Without dead ends: 824 [2022-01-10 18:31:09,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:09,949 INFO L933 BasicCegarLoop]: 826 mSDtfsCounter, 1153 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:09,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 2014 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-01-10 18:31:09,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 346. [2022-01-10 18:31:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 326 states have (on average 1.549079754601227) internal successors, (505), 345 states have internal predecessors, (505), 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) [2022-01-10 18:31:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 505 transitions. [2022-01-10 18:31:09,959 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 505 transitions. Word has length 19 [2022-01-10 18:31:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:09,959 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 505 transitions. [2022-01-10 18:31:09,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-01-10 18:31:09,959 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 505 transitions. [2022-01-10 18:31:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 18:31:09,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:09,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:09,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:31:09,960 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:09,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:09,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2137125115, now seen corresponding path program 1 times [2022-01-10 18:31:09,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:09,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884304927] [2022-01-10 18:31:09,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:09,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:10,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:10,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884304927] [2022-01-10 18:31:10,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884304927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:10,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:10,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:31:10,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462238519] [2022-01-10 18:31:10,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:10,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:31:10,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:10,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:31:10,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:10,011 INFO L87 Difference]: Start difference. First operand 346 states and 505 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-01-10 18:31:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:10,082 INFO L93 Difference]: Finished difference Result 1113 states and 1597 transitions. [2022-01-10 18:31:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:31:10,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 18:31:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:10,085 INFO L225 Difference]: With dead ends: 1113 [2022-01-10 18:31:10,085 INFO L226 Difference]: Without dead ends: 797 [2022-01-10 18:31:10,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:10,086 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 990 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:10,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 1723 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-01-10 18:31:10,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 314. [2022-01-10 18:31:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 298 states have (on average 1.4932885906040267) internal successors, (445), 313 states have internal predecessors, (445), 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) [2022-01-10 18:31:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 445 transitions. [2022-01-10 18:31:10,098 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 445 transitions. Word has length 19 [2022-01-10 18:31:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:10,099 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 445 transitions. [2022-01-10 18:31:10,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-01-10 18:31:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 445 transitions. [2022-01-10 18:31:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 18:31:10,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:10,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:10,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:31:10,101 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:10,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:10,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1675139870, now seen corresponding path program 1 times [2022-01-10 18:31:10,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:10,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035471695] [2022-01-10 18:31:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:10,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:10,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:10,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035471695] [2022-01-10 18:31:10,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035471695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:10,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:10,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:10,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988443971] [2022-01-10 18:31:10,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:10,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:10,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:10,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:10,142 INFO L87 Difference]: Start difference. First operand 314 states and 445 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-01-10 18:31:10,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:10,165 INFO L93 Difference]: Finished difference Result 710 states and 1013 transitions. [2022-01-10 18:31:10,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:10,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 18:31:10,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:10,167 INFO L225 Difference]: With dead ends: 710 [2022-01-10 18:31:10,167 INFO L226 Difference]: Without dead ends: 492 [2022-01-10 18:31:10,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:10,169 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 280 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:10,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 801 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-01-10 18:31:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 308. [2022-01-10 18:31:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 293 states have (on average 1.4880546075085324) internal successors, (436), 307 states have internal predecessors, (436), 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) [2022-01-10 18:31:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 436 transitions. [2022-01-10 18:31:10,179 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 436 transitions. Word has length 19 [2022-01-10 18:31:10,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:10,179 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 436 transitions. [2022-01-10 18:31:10,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-01-10 18:31:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 436 transitions. [2022-01-10 18:31:10,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 18:31:10,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:10,180 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, 1] [2022-01-10 18:31:10,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:31:10,180 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:10,180 INFO L85 PathProgramCache]: Analyzing trace with hash -221581795, now seen corresponding path program 1 times [2022-01-10 18:31:10,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:10,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514831800] [2022-01-10 18:31:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:10,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:10,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:10,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514831800] [2022-01-10 18:31:10,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514831800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:10,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:10,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:10,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815410787] [2022-01-10 18:31:10,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:10,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:10,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:10,220 INFO L87 Difference]: Start difference. First operand 308 states and 436 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-01-10 18:31:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:10,253 INFO L93 Difference]: Finished difference Result 672 states and 972 transitions. [2022-01-10 18:31:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 [2022-01-10 18:31:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:10,254 INFO L225 Difference]: With dead ends: 672 [2022-01-10 18:31:10,254 INFO L226 Difference]: Without dead ends: 409 [2022-01-10 18:31:10,255 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 [2022-01-10 18:31:10,255 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 301 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:10,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 780 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-01-10 18:31:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 268. [2022-01-10 18:31:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 263 states have (on average 1.467680608365019) internal successors, (386), 267 states have internal predecessors, (386), 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) [2022-01-10 18:31:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 386 transitions. [2022-01-10 18:31:10,264 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 386 transitions. Word has length 22 [2022-01-10 18:31:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:10,265 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 386 transitions. [2022-01-10 18:31:10,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-01-10 18:31:10,265 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 386 transitions. [2022-01-10 18:31:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 18:31:10,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:10,265 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, 1, 1, 1, 1] [2022-01-10 18:31:10,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:31:10,265 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:10,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1953001789, now seen corresponding path program 1 times [2022-01-10 18:31:10,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:10,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111331449] [2022-01-10 18:31:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:10,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:10,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:10,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111331449] [2022-01-10 18:31:10,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111331449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:10,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:10,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:10,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558659785] [2022-01-10 18:31:10,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:10,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:10,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:10,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:10,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:10,340 INFO L87 Difference]: Start difference. First operand 268 states and 386 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) [2022-01-10 18:31:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:10,370 INFO L93 Difference]: Finished difference Result 709 states and 1040 transitions. [2022-01-10 18:31:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:10,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) Word has length 25 [2022-01-10 18:31:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:10,372 INFO L225 Difference]: With dead ends: 709 [2022-01-10 18:31:10,372 INFO L226 Difference]: Without dead ends: 533 [2022-01-10 18:31:10,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:10,373 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 455 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:10,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 1088 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-10 18:31:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 263. [2022-01-10 18:31:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 259 states have (on average 1.4594594594594594) internal successors, (378), 262 states have internal predecessors, (378), 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) [2022-01-10 18:31:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 378 transitions. [2022-01-10 18:31:10,386 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 378 transitions. Word has length 25 [2022-01-10 18:31:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:10,386 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 378 transitions. [2022-01-10 18:31:10,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) [2022-01-10 18:31:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 378 transitions. [2022-01-10 18:31:10,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 18:31:10,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:10,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:10,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:31:10,388 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:10,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:10,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1553138135, now seen corresponding path program 1 times [2022-01-10 18:31:10,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:10,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486910172] [2022-01-10 18:31:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:10,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:10,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:10,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486910172] [2022-01-10 18:31:10,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486910172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:10,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:10,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:31:10,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223651700] [2022-01-10 18:31:10,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:10,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:31:10,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:10,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:31:10,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:10,442 INFO L87 Difference]: Start difference. First operand 263 states and 378 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:10,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:10,469 INFO L93 Difference]: Finished difference Result 431 states and 625 transitions. [2022-01-10 18:31:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:31:10,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-10 18:31:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:10,471 INFO L225 Difference]: With dead ends: 431 [2022-01-10 18:31:10,471 INFO L226 Difference]: Without dead ends: 260 [2022-01-10 18:31:10,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:10,472 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 260 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:10,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 616 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-01-10 18:31:10,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2022-01-10 18:31:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 256 states have (on average 1.44921875) internal successors, (371), 258 states have internal predecessors, (371), 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) [2022-01-10 18:31:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 371 transitions. [2022-01-10 18:31:10,481 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 371 transitions. Word has length 32 [2022-01-10 18:31:10,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:10,482 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 371 transitions. [2022-01-10 18:31:10,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 371 transitions. [2022-01-10 18:31:10,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 18:31:10,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:10,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:10,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:31:10,483 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:10,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1295649736, now seen corresponding path program 1 times [2022-01-10 18:31:10,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:10,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284307051] [2022-01-10 18:31:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:10,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:10,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:10,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284307051] [2022-01-10 18:31:10,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284307051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:10,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:10,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:10,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830046196] [2022-01-10 18:31:10,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:10,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:10,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:10,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:10,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:10,549 INFO L87 Difference]: Start difference. First operand 259 states and 371 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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) [2022-01-10 18:31:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:10,573 INFO L93 Difference]: Finished difference Result 429 states and 617 transitions. [2022-01-10 18:31:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:10,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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 41 [2022-01-10 18:31:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:10,575 INFO L225 Difference]: With dead ends: 429 [2022-01-10 18:31:10,575 INFO L226 Difference]: Without dead ends: 259 [2022-01-10 18:31:10,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:10,577 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:10,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1038 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-01-10 18:31:10,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2022-01-10 18:31:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 252 states have (on average 1.4404761904761905) internal successors, (363), 254 states have internal predecessors, (363), 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) [2022-01-10 18:31:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 363 transitions. [2022-01-10 18:31:10,588 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 363 transitions. Word has length 41 [2022-01-10 18:31:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:10,588 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 363 transitions. [2022-01-10 18:31:10,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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) [2022-01-10 18:31:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 363 transitions. [2022-01-10 18:31:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 18:31:10,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:10,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:10,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:31:10,589 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:10,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:10,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1317637405, now seen corresponding path program 1 times [2022-01-10 18:31:10,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:10,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156885027] [2022-01-10 18:31:10,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:10,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:10,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:10,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156885027] [2022-01-10 18:31:10,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156885027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:10,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:10,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:10,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341690506] [2022-01-10 18:31:10,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:10,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:10,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:10,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:10,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:10,657 INFO L87 Difference]: Start difference. First operand 255 states and 363 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-01-10 18:31:10,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:10,669 INFO L93 Difference]: Finished difference Result 476 states and 682 transitions. [2022-01-10 18:31:10,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:10,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2022-01-10 18:31:10,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:10,671 INFO L225 Difference]: With dead ends: 476 [2022-01-10 18:31:10,671 INFO L226 Difference]: Without dead ends: 309 [2022-01-10 18:31:10,672 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 [2022-01-10 18:31:10,672 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 237 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:10,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 606 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:10,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-10 18:31:10,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 251. [2022-01-10 18:31:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 249 states have (on average 1.4377510040160641) internal successors, (358), 250 states have internal predecessors, (358), 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) [2022-01-10 18:31:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 358 transitions. [2022-01-10 18:31:10,683 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 358 transitions. Word has length 49 [2022-01-10 18:31:10,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:10,684 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 358 transitions. [2022-01-10 18:31:10,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-01-10 18:31:10,684 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 358 transitions. [2022-01-10 18:31:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 18:31:10,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:10,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:10,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:31:10,685 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:10,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1125762965, now seen corresponding path program 1 times [2022-01-10 18:31:10,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:10,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013833424] [2022-01-10 18:31:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:10,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:10,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:10,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013833424] [2022-01-10 18:31:10,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013833424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:10,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:10,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:10,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557027871] [2022-01-10 18:31:10,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:10,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:10,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:10,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:10,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:10,785 INFO L87 Difference]: Start difference. First operand 251 states and 358 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:11,095 INFO L93 Difference]: Finished difference Result 710 states and 1024 transitions. [2022-01-10 18:31:11,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:31:11,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-01-10 18:31:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:11,097 INFO L225 Difference]: With dead ends: 710 [2022-01-10 18:31:11,097 INFO L226 Difference]: Without dead ends: 547 [2022-01-10 18:31:11,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:11,098 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 651 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:11,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 1319 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:31:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-01-10 18:31:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 292. [2022-01-10 18:31:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.436426116838488) internal successors, (418), 291 states have internal predecessors, (418), 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) [2022-01-10 18:31:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 418 transitions. [2022-01-10 18:31:11,120 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 418 transitions. Word has length 50 [2022-01-10 18:31:11,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:11,120 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 418 transitions. [2022-01-10 18:31:11,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:11,120 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 418 transitions. [2022-01-10 18:31:11,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:31:11,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:11,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:11,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:31:11,121 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash 143795811, now seen corresponding path program 1 times [2022-01-10 18:31:11,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:11,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715667385] [2022-01-10 18:31:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:11,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:11,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:11,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715667385] [2022-01-10 18:31:11,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715667385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:11,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:11,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:11,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158237417] [2022-01-10 18:31:11,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:11,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:11,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:11,169 INFO L87 Difference]: Start difference. First operand 292 states and 418 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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) [2022-01-10 18:31:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:11,212 INFO L93 Difference]: Finished difference Result 683 states and 988 transitions. [2022-01-10 18:31:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 71 [2022-01-10 18:31:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:11,213 INFO L225 Difference]: With dead ends: 683 [2022-01-10 18:31:11,213 INFO L226 Difference]: Without dead ends: 479 [2022-01-10 18:31:11,214 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 [2022-01-10 18:31:11,214 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 189 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:11,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 659 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-01-10 18:31:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 340. [2022-01-10 18:31:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.4188790560471976) internal successors, (481), 339 states have internal predecessors, (481), 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) [2022-01-10 18:31:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 481 transitions. [2022-01-10 18:31:11,240 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 481 transitions. Word has length 71 [2022-01-10 18:31:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:11,240 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 481 transitions. [2022-01-10 18:31:11,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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) [2022-01-10 18:31:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 481 transitions. [2022-01-10 18:31:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:31:11,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:11,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:11,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:31:11,241 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2040342452, now seen corresponding path program 1 times [2022-01-10 18:31:11,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:11,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717526971] [2022-01-10 18:31:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:11,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:11,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:11,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717526971] [2022-01-10 18:31:11,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717526971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:11,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:11,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:11,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549644552] [2022-01-10 18:31:11,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:11,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:11,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:11,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:11,283 INFO L87 Difference]: Start difference. First operand 340 states and 481 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-01-10 18:31:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:11,336 INFO L93 Difference]: Finished difference Result 814 states and 1161 transitions. [2022-01-10 18:31:11,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:11,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-01-10 18:31:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:11,338 INFO L225 Difference]: With dead ends: 814 [2022-01-10 18:31:11,338 INFO L226 Difference]: Without dead ends: 562 [2022-01-10 18:31:11,338 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 [2022-01-10 18:31:11,338 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 194 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:11,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 680 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:11,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-01-10 18:31:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 408. [2022-01-10 18:31:11,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.402948402948403) internal successors, (571), 407 states have internal predecessors, (571), 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) [2022-01-10 18:31:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 571 transitions. [2022-01-10 18:31:11,390 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 571 transitions. Word has length 72 [2022-01-10 18:31:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:11,390 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 571 transitions. [2022-01-10 18:31:11,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-01-10 18:31:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 571 transitions. [2022-01-10 18:31:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:31:11,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:11,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:11,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:31:11,391 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -591442433, now seen corresponding path program 1 times [2022-01-10 18:31:11,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:11,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445329658] [2022-01-10 18:31:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:11,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:11,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:11,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445329658] [2022-01-10 18:31:11,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445329658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:11,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:11,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:11,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301630969] [2022-01-10 18:31:11,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:11,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:11,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:11,439 INFO L87 Difference]: Start difference. First operand 408 states and 571 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-10 18:31:11,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:11,511 INFO L93 Difference]: Finished difference Result 988 states and 1393 transitions. [2022-01-10 18:31:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:11,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-01-10 18:31:11,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:11,514 INFO L225 Difference]: With dead ends: 988 [2022-01-10 18:31:11,514 INFO L226 Difference]: Without dead ends: 668 [2022-01-10 18:31:11,515 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 [2022-01-10 18:31:11,515 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 200 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:11,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 702 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:11,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-01-10 18:31:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 482. [2022-01-10 18:31:11,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.395010395010395) internal successors, (671), 481 states have internal predecessors, (671), 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) [2022-01-10 18:31:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 671 transitions. [2022-01-10 18:31:11,570 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 671 transitions. Word has length 73 [2022-01-10 18:31:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:11,570 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 671 transitions. [2022-01-10 18:31:11,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-10 18:31:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 671 transitions. [2022-01-10 18:31:11,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:31:11,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:11,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:11,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:31:11,572 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:11,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:11,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1665468574, now seen corresponding path program 1 times [2022-01-10 18:31:11,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:11,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559613435] [2022-01-10 18:31:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:11,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:11,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:11,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559613435] [2022-01-10 18:31:11,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559613435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:11,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:11,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:11,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048408528] [2022-01-10 18:31:11,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:11,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:11,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:11,631 INFO L87 Difference]: Start difference. First operand 482 states and 671 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-10 18:31:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:11,755 INFO L93 Difference]: Finished difference Result 1200 states and 1655 transitions. [2022-01-10 18:31:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:11,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-01-10 18:31:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:11,758 INFO L225 Difference]: With dead ends: 1200 [2022-01-10 18:31:11,758 INFO L226 Difference]: Without dead ends: 806 [2022-01-10 18:31:11,759 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 [2022-01-10 18:31:11,759 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 291 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:11,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 611 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-01-10 18:31:11,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 482. [2022-01-10 18:31:11,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.3762993762993763) internal successors, (662), 481 states have internal predecessors, (662), 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) [2022-01-10 18:31:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 662 transitions. [2022-01-10 18:31:11,798 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 662 transitions. Word has length 73 [2022-01-10 18:31:11,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:11,798 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 662 transitions. [2022-01-10 18:31:11,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-01-10 18:31:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 662 transitions. [2022-01-10 18:31:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:31:11,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:11,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:11,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:31:11,803 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:11,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1229955285, now seen corresponding path program 1 times [2022-01-10 18:31:11,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:11,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975008637] [2022-01-10 18:31:11,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:11,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:11,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:11,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975008637] [2022-01-10 18:31:11,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975008637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:11,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:11,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:11,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538934935] [2022-01-10 18:31:11,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:11,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:11,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:11,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:11,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:11,852 INFO L87 Difference]: Start difference. First operand 482 states and 662 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-01-10 18:31:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:11,963 INFO L93 Difference]: Finished difference Result 1276 states and 1745 transitions. [2022-01-10 18:31:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:11,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-01-10 18:31:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:11,966 INFO L225 Difference]: With dead ends: 1276 [2022-01-10 18:31:11,966 INFO L226 Difference]: Without dead ends: 882 [2022-01-10 18:31:11,967 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 [2022-01-10 18:31:11,967 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 238 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:11,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 808 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:11,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-01-10 18:31:12,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 482. [2022-01-10 18:31:12,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.3742203742203742) internal successors, (661), 481 states have internal predecessors, (661), 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) [2022-01-10 18:31:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 661 transitions. [2022-01-10 18:31:12,013 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 661 transitions. Word has length 74 [2022-01-10 18:31:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:12,013 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 661 transitions. [2022-01-10 18:31:12,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-01-10 18:31:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 661 transitions. [2022-01-10 18:31:12,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:31:12,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:12,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:12,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:31:12,014 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:12,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash -865107534, now seen corresponding path program 1 times [2022-01-10 18:31:12,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:12,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183759757] [2022-01-10 18:31:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:12,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:12,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:12,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183759757] [2022-01-10 18:31:12,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183759757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:12,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:12,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:12,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258388034] [2022-01-10 18:31:12,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:12,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:12,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:12,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:12,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:12,088 INFO L87 Difference]: Start difference. First operand 482 states and 661 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2022-01-10 18:31:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:12,136 INFO L93 Difference]: Finished difference Result 880 states and 1206 transitions. [2022-01-10 18:31:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 75 [2022-01-10 18:31:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:12,138 INFO L225 Difference]: With dead ends: 880 [2022-01-10 18:31:12,138 INFO L226 Difference]: Without dead ends: 459 [2022-01-10 18:31:12,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:12,139 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 1 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:12,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 970 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-01-10 18:31:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2022-01-10 18:31:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.3668122270742358) internal successors, (626), 458 states have internal predecessors, (626), 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) [2022-01-10 18:31:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 626 transitions. [2022-01-10 18:31:12,173 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 626 transitions. Word has length 75 [2022-01-10 18:31:12,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:12,173 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 626 transitions. [2022-01-10 18:31:12,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2022-01-10 18:31:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 626 transitions. [2022-01-10 18:31:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:31:12,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:12,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:12,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:31:12,174 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:12,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1067009593, now seen corresponding path program 1 times [2022-01-10 18:31:12,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:12,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274725676] [2022-01-10 18:31:12,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:12,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:12,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:12,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274725676] [2022-01-10 18:31:12,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274725676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:12,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:12,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:12,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028863171] [2022-01-10 18:31:12,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:12,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:12,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:12,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:12,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:12,256 INFO L87 Difference]: Start difference. First operand 459 states and 626 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:12,354 INFO L93 Difference]: Finished difference Result 1043 states and 1414 transitions. [2022-01-10 18:31:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:31:12,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 18:31:12,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:12,358 INFO L225 Difference]: With dead ends: 1043 [2022-01-10 18:31:12,358 INFO L226 Difference]: Without dead ends: 1041 [2022-01-10 18:31:12,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:12,359 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 375 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:12,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 1397 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:12,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-01-10 18:31:12,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 461. [2022-01-10 18:31:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.3652173913043477) internal successors, (628), 460 states have internal predecessors, (628), 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) [2022-01-10 18:31:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 628 transitions. [2022-01-10 18:31:12,398 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 628 transitions. Word has length 77 [2022-01-10 18:31:12,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:12,398 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 628 transitions. [2022-01-10 18:31:12,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 628 transitions. [2022-01-10 18:31:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:31:12,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:12,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:12,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:31:12,399 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:12,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2023245813, now seen corresponding path program 1 times [2022-01-10 18:31:12,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:12,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939623596] [2022-01-10 18:31:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:12,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:12,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:12,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939623596] [2022-01-10 18:31:12,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939623596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:12,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:12,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:31:12,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23986452] [2022-01-10 18:31:12,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:12,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:31:12,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:12,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:31:12,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:31:12,505 INFO L87 Difference]: Start difference. First operand 461 states and 628 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2022-01-10 18:31:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:12,769 INFO L93 Difference]: Finished difference Result 1330 states and 1802 transitions. [2022-01-10 18:31:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 18:31:12,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 18:31:12,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:12,772 INFO L225 Difference]: With dead ends: 1330 [2022-01-10 18:31:12,772 INFO L226 Difference]: Without dead ends: 957 [2022-01-10 18:31:12,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-10 18:31:12,773 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 630 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:12,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2779 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:31:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-01-10 18:31:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 481. [2022-01-10 18:31:12,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3666666666666667) internal successors, (656), 480 states have internal predecessors, (656), 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) [2022-01-10 18:31:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 656 transitions. [2022-01-10 18:31:12,814 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 656 transitions. Word has length 80 [2022-01-10 18:31:12,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:12,815 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 656 transitions. [2022-01-10 18:31:12,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2022-01-10 18:31:12,815 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 656 transitions. [2022-01-10 18:31:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:31:12,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:12,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:12,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:31:12,816 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:12,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:12,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1994616662, now seen corresponding path program 1 times [2022-01-10 18:31:12,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:12,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654743562] [2022-01-10 18:31:12,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:12,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:12,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:12,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654743562] [2022-01-10 18:31:12,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654743562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:12,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:12,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:12,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890593653] [2022-01-10 18:31:12,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:12,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:12,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:12,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:12,875 INFO L87 Difference]: Start difference. First operand 481 states and 656 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-01-10 18:31:13,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:13,007 INFO L93 Difference]: Finished difference Result 1531 states and 2064 transitions. [2022-01-10 18:31:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:13,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 18:31:13,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:13,010 INFO L225 Difference]: With dead ends: 1531 [2022-01-10 18:31:13,010 INFO L226 Difference]: Without dead ends: 1052 [2022-01-10 18:31:13,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:13,011 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 578 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:13,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 848 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-01-10 18:31:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 477. [2022-01-10 18:31:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.3319327731092436) internal successors, (634), 476 states have internal predecessors, (634), 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) [2022-01-10 18:31:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 634 transitions. [2022-01-10 18:31:13,053 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 634 transitions. Word has length 80 [2022-01-10 18:31:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:13,054 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 634 transitions. [2022-01-10 18:31:13,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-01-10 18:31:13,054 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 634 transitions. [2022-01-10 18:31:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 18:31:13,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:13,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:13,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 18:31:13,055 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:13,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash 30647624, now seen corresponding path program 1 times [2022-01-10 18:31:13,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:13,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920960345] [2022-01-10 18:31:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:13,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:13,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:13,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920960345] [2022-01-10 18:31:13,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920960345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:13,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:13,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:13,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505097377] [2022-01-10 18:31:13,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:13,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:13,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:13,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:13,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:13,122 INFO L87 Difference]: Start difference. First operand 477 states and 634 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-01-10 18:31:13,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:13,236 INFO L93 Difference]: Finished difference Result 1406 states and 1871 transitions. [2022-01-10 18:31:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:13,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2022-01-10 18:31:13,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:13,239 INFO L225 Difference]: With dead ends: 1406 [2022-01-10 18:31:13,239 INFO L226 Difference]: Without dead ends: 939 [2022-01-10 18:31:13,239 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 [2022-01-10 18:31:13,240 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 299 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:13,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 608 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:13,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-01-10 18:31:13,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 481. [2022-01-10 18:31:13,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3291666666666666) internal successors, (638), 480 states have internal predecessors, (638), 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) [2022-01-10 18:31:13,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 638 transitions. [2022-01-10 18:31:13,286 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 638 transitions. Word has length 86 [2022-01-10 18:31:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:13,286 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 638 transitions. [2022-01-10 18:31:13,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-01-10 18:31:13,287 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 638 transitions. [2022-01-10 18:31:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 18:31:13,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:13,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:13,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 18:31:13,288 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1748413941, now seen corresponding path program 1 times [2022-01-10 18:31:13,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:13,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737964863] [2022-01-10 18:31:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:13,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:13,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:13,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737964863] [2022-01-10 18:31:13,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737964863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:13,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:13,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:13,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061167746] [2022-01-10 18:31:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:13,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:13,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:13,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:13,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:13,323 INFO L87 Difference]: Start difference. First operand 481 states and 638 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:13,416 INFO L93 Difference]: Finished difference Result 1348 states and 1790 transitions. [2022-01-10 18:31:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:13,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-01-10 18:31:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:13,419 INFO L225 Difference]: With dead ends: 1348 [2022-01-10 18:31:13,419 INFO L226 Difference]: Without dead ends: 879 [2022-01-10 18:31:13,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:13,420 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 225 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:13,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 919 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-01-10 18:31:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 481. [2022-01-10 18:31:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3270833333333334) internal successors, (637), 480 states have internal predecessors, (637), 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) [2022-01-10 18:31:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 637 transitions. [2022-01-10 18:31:13,463 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 637 transitions. Word has length 108 [2022-01-10 18:31:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:13,463 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 637 transitions. [2022-01-10 18:31:13,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 637 transitions. [2022-01-10 18:31:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 18:31:13,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:13,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:13,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 18:31:13,465 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1671152743, now seen corresponding path program 1 times [2022-01-10 18:31:13,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:13,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496890987] [2022-01-10 18:31:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:13,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 18:31:13,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:13,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496890987] [2022-01-10 18:31:13,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496890987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:13,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:13,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:13,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197478061] [2022-01-10 18:31:13,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:13,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:13,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:13,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:13,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:13,510 INFO L87 Difference]: Start difference. First operand 481 states and 637 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2022-01-10 18:31:13,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:13,600 INFO L93 Difference]: Finished difference Result 1332 states and 1770 transitions. [2022-01-10 18:31:13,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:13,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 111 [2022-01-10 18:31:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:13,603 INFO L225 Difference]: With dead ends: 1332 [2022-01-10 18:31:13,603 INFO L226 Difference]: Without dead ends: 877 [2022-01-10 18:31:13,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:13,604 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 224 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:13,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 919 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-01-10 18:31:13,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 481. [2022-01-10 18:31:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.325) internal successors, (636), 480 states have internal predecessors, (636), 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) [2022-01-10 18:31:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 636 transitions. [2022-01-10 18:31:13,647 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 636 transitions. Word has length 111 [2022-01-10 18:31:13,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:13,647 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 636 transitions. [2022-01-10 18:31:13,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2022-01-10 18:31:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 636 transitions. [2022-01-10 18:31:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 18:31:13,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:13,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:13,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 18:31:13,649 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash -340069665, now seen corresponding path program 1 times [2022-01-10 18:31:13,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:13,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420650381] [2022-01-10 18:31:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:13,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:31:13,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:13,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420650381] [2022-01-10 18:31:13,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420650381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:13,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:13,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:13,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065375217] [2022-01-10 18:31:13,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:13,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:13,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:13,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:13,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:13,694 INFO L87 Difference]: Start difference. First operand 481 states and 636 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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) [2022-01-10 18:31:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:13,784 INFO L93 Difference]: Finished difference Result 1314 states and 1748 transitions. [2022-01-10 18:31:13,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:13,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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 114 [2022-01-10 18:31:13,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:13,786 INFO L225 Difference]: With dead ends: 1314 [2022-01-10 18:31:13,786 INFO L226 Difference]: Without dead ends: 875 [2022-01-10 18:31:13,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:13,787 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 223 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:13,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 919 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-01-10 18:31:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 481. [2022-01-10 18:31:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3229166666666667) internal successors, (635), 480 states have internal predecessors, (635), 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) [2022-01-10 18:31:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 635 transitions. [2022-01-10 18:31:13,830 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 635 transitions. Word has length 114 [2022-01-10 18:31:13,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:13,830 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 635 transitions. [2022-01-10 18:31:13,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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) [2022-01-10 18:31:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 635 transitions. [2022-01-10 18:31:13,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 18:31:13,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:13,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:13,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 18:31:13,832 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:13,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:13,832 INFO L85 PathProgramCache]: Analyzing trace with hash -592064665, now seen corresponding path program 1 times [2022-01-10 18:31:13,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:13,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472790943] [2022-01-10 18:31:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:13,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:13,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:13,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472790943] [2022-01-10 18:31:13,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472790943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:13,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:13,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:13,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310190658] [2022-01-10 18:31:13,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:13,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:13,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:13,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:13,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:13,876 INFO L87 Difference]: Start difference. First operand 481 states and 635 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2022-01-10 18:31:13,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:13,936 INFO L93 Difference]: Finished difference Result 876 states and 1161 transitions. [2022-01-10 18:31:13,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:13,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 117 [2022-01-10 18:31:13,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:13,938 INFO L225 Difference]: With dead ends: 876 [2022-01-10 18:31:13,938 INFO L226 Difference]: Without dead ends: 451 [2022-01-10 18:31:13,938 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 [2022-01-10 18:31:13,939 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 238 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:13,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 318 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-01-10 18:31:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-01-10 18:31:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.3177777777777777) internal successors, (593), 450 states have internal predecessors, (593), 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) [2022-01-10 18:31:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 593 transitions. [2022-01-10 18:31:13,990 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 593 transitions. Word has length 117 [2022-01-10 18:31:13,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:13,990 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 593 transitions. [2022-01-10 18:31:13,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2022-01-10 18:31:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 593 transitions. [2022-01-10 18:31:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 18:31:13,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:13,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:13,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 18:31:13,991 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:13,992 INFO L85 PathProgramCache]: Analyzing trace with hash 419027824, now seen corresponding path program 1 times [2022-01-10 18:31:13,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:13,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321104791] [2022-01-10 18:31:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:13,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:14,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:14,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321104791] [2022-01-10 18:31:14,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321104791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:14,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:14,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:31:14,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46051150] [2022-01-10 18:31:14,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:14,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:31:14,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:14,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:31:14,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:31:14,058 INFO L87 Difference]: Start difference. First operand 451 states and 593 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2022-01-10 18:31:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:14,123 INFO L93 Difference]: Finished difference Result 857 states and 1135 transitions. [2022-01-10 18:31:14,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:31:14,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 119 [2022-01-10 18:31:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:14,125 INFO L225 Difference]: With dead ends: 857 [2022-01-10 18:31:14,125 INFO L226 Difference]: Without dead ends: 451 [2022-01-10 18:31:14,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:31:14,126 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1036 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:14,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 312 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-01-10 18:31:14,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-01-10 18:31:14,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.3155555555555556) internal successors, (592), 450 states have internal predecessors, (592), 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) [2022-01-10 18:31:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 592 transitions. [2022-01-10 18:31:14,177 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 592 transitions. Word has length 119 [2022-01-10 18:31:14,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:14,177 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 592 transitions. [2022-01-10 18:31:14,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2022-01-10 18:31:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 592 transitions. [2022-01-10 18:31:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 18:31:14,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:14,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:14,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 18:31:14,178 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:14,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:14,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1650824612, now seen corresponding path program 1 times [2022-01-10 18:31:14,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:14,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891454967] [2022-01-10 18:31:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:14,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:14,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:14,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891454967] [2022-01-10 18:31:14,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891454967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:14,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:14,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:14,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232732777] [2022-01-10 18:31:14,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:14,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:14,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:14,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:14,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:14,224 INFO L87 Difference]: Start difference. First operand 451 states and 592 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-01-10 18:31:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:14,288 INFO L93 Difference]: Finished difference Result 845 states and 1117 transitions. [2022-01-10 18:31:14,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:14,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 120 [2022-01-10 18:31:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:14,290 INFO L225 Difference]: With dead ends: 845 [2022-01-10 18:31:14,290 INFO L226 Difference]: Without dead ends: 451 [2022-01-10 18:31:14,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:14,291 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:14,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 838 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-01-10 18:31:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-01-10 18:31:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.3133333333333332) internal successors, (591), 450 states have internal predecessors, (591), 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) [2022-01-10 18:31:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 591 transitions. [2022-01-10 18:31:14,351 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 591 transitions. Word has length 120 [2022-01-10 18:31:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:14,351 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 591 transitions. [2022-01-10 18:31:14,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-01-10 18:31:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 591 transitions. [2022-01-10 18:31:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 18:31:14,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:14,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:14,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 18:31:14,352 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:14,353 INFO L85 PathProgramCache]: Analyzing trace with hash 628446532, now seen corresponding path program 1 times [2022-01-10 18:31:14,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:14,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478032927] [2022-01-10 18:31:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:14,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:14,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:14,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478032927] [2022-01-10 18:31:14,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478032927] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:31:14,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510034222] [2022-01-10 18:31:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:14,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:31:14,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:31:14,467 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) [2022-01-10 18:31:14,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 18:31:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:14,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 18:31:14,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:31:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:14,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:31:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:15,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510034222] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:31:15,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:31:15,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-10 18:31:15,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333955364] [2022-01-10 18:31:15,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:31:15,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 18:31:15,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:15,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 18:31:15,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:31:15,120 INFO L87 Difference]: Start difference. First operand 451 states and 591 transitions. Second operand has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 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) [2022-01-10 18:31:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:15,695 INFO L93 Difference]: Finished difference Result 2102 states and 2771 transitions. [2022-01-10 18:31:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 18:31:15,695 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 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 123 [2022-01-10 18:31:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:15,700 INFO L225 Difference]: With dead ends: 2102 [2022-01-10 18:31:15,700 INFO L226 Difference]: Without dead ends: 1713 [2022-01-10 18:31:15,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 240 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2022-01-10 18:31:15,701 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1305 mSDsluCounter, 4917 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 5533 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:15,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 5533 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:31:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2022-01-10 18:31:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 759. [2022-01-10 18:31:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 1.299472295514512) internal successors, (985), 758 states have internal predecessors, (985), 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) [2022-01-10 18:31:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 985 transitions. [2022-01-10 18:31:15,827 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 985 transitions. Word has length 123 [2022-01-10 18:31:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:15,827 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 985 transitions. [2022-01-10 18:31:15,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 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) [2022-01-10 18:31:15,828 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 985 transitions. [2022-01-10 18:31:15,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 18:31:15,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:15,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:15,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 18:31:16,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-01-10 18:31:16,047 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:16,048 INFO L85 PathProgramCache]: Analyzing trace with hash -741215810, now seen corresponding path program 1 times [2022-01-10 18:31:16,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:16,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459222339] [2022-01-10 18:31:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:16,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:16,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:16,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459222339] [2022-01-10 18:31:16,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459222339] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:31:16,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50420584] [2022-01-10 18:31:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:16,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:31:16,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:31:16,206 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) [2022-01-10 18:31:16,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 18:31:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:16,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 18:31:16,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:31:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:16,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:31:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:16,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50420584] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:31:16,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:31:16,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-01-10 18:31:16,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738434470] [2022-01-10 18:31:16,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:31:16,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 18:31:16,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:16,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 18:31:16,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-10 18:31:16,817 INFO L87 Difference]: Start difference. First operand 759 states and 985 transitions. Second operand has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 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) [2022-01-10 18:31:17,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:17,293 INFO L93 Difference]: Finished difference Result 2400 states and 3139 transitions. [2022-01-10 18:31:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 18:31:17,293 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 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 123 [2022-01-10 18:31:17,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:17,298 INFO L225 Difference]: With dead ends: 2400 [2022-01-10 18:31:17,298 INFO L226 Difference]: Without dead ends: 2011 [2022-01-10 18:31:17,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2022-01-10 18:31:17,299 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 1215 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:17,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 3221 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:31:17,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2022-01-10 18:31:17,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1363. [2022-01-10 18:31:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.291483113069016) internal successors, (1759), 1362 states have internal predecessors, (1759), 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) [2022-01-10 18:31:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1759 transitions. [2022-01-10 18:31:17,445 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1759 transitions. Word has length 123 [2022-01-10 18:31:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:17,445 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1759 transitions. [2022-01-10 18:31:17,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 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) [2022-01-10 18:31:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1759 transitions. [2022-01-10 18:31:17,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 18:31:17,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:17,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:17,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 18:31:17,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-01-10 18:31:17,668 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:17,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1603873493, now seen corresponding path program 1 times [2022-01-10 18:31:17,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:17,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276998948] [2022-01-10 18:31:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:17,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:17,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:17,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276998948] [2022-01-10 18:31:17,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276998948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:17,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:17,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:17,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834105967] [2022-01-10 18:31:17,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:17,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:17,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:17,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:17,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:17,706 INFO L87 Difference]: Start difference. First operand 1363 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-01-10 18:31:17,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:17,798 INFO L93 Difference]: Finished difference Result 2077 states and 2692 transitions. [2022-01-10 18:31:17,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:17,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2022-01-10 18:31:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:17,811 INFO L225 Difference]: With dead ends: 2077 [2022-01-10 18:31:17,811 INFO L226 Difference]: Without dead ends: 717 [2022-01-10 18:31:17,813 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 [2022-01-10 18:31:17,813 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 137 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:17,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 479 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-01-10 18:31:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 709. [2022-01-10 18:31:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 1.3036723163841808) internal successors, (923), 708 states have internal predecessors, (923), 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) [2022-01-10 18:31:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 923 transitions. [2022-01-10 18:31:17,887 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 923 transitions. Word has length 124 [2022-01-10 18:31:17,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:17,887 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 923 transitions. [2022-01-10 18:31:17,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-01-10 18:31:17,887 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 923 transitions. [2022-01-10 18:31:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 18:31:17,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:17,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:17,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 18:31:17,888 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:17,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:17,889 INFO L85 PathProgramCache]: Analyzing trace with hash -595343753, now seen corresponding path program 1 times [2022-01-10 18:31:17,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:17,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990401084] [2022-01-10 18:31:17,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:17,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:17,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:17,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990401084] [2022-01-10 18:31:17,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990401084] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:31:17,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459466479] [2022-01-10 18:31:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:17,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:31:17,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:31:18,000 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) [2022-01-10 18:31:18,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 18:31:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:18,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 18:31:18,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:31:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:18,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:31:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:18,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459466479] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:31:18,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:31:18,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-10 18:31:18,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755800294] [2022-01-10 18:31:18,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:31:18,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 18:31:18,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:18,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 18:31:18,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:31:18,611 INFO L87 Difference]: Start difference. First operand 709 states and 923 transitions. Second operand has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 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) [2022-01-10 18:31:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:18,969 INFO L93 Difference]: Finished difference Result 1792 states and 2363 transitions. [2022-01-10 18:31:18,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 18:31:18,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 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 [2022-01-10 18:31:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:18,972 INFO L225 Difference]: With dead ends: 1792 [2022-01-10 18:31:18,972 INFO L226 Difference]: Without dead ends: 1403 [2022-01-10 18:31:18,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 254 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-01-10 18:31:18,974 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1750 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:18,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 2639 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:31:18,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-01-10 18:31:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 723. [2022-01-10 18:31:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.2977839335180055) internal successors, (937), 722 states have internal predecessors, (937), 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) [2022-01-10 18:31:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 937 transitions. [2022-01-10 18:31:19,048 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 937 transitions. Word has length 130 [2022-01-10 18:31:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:19,048 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 937 transitions. [2022-01-10 18:31:19,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 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) [2022-01-10 18:31:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 937 transitions. [2022-01-10 18:31:19,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:31:19,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:19,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:19,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 18:31:19,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:31:19,267 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1751547217, now seen corresponding path program 1 times [2022-01-10 18:31:19,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:19,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004795964] [2022-01-10 18:31:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:19,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:19,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:19,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004795964] [2022-01-10 18:31:19,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004795964] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:31:19,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83070604] [2022-01-10 18:31:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:19,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:31:19,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:31:19,354 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) [2022-01-10 18:31:19,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 18:31:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:19,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 18:31:19,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:31:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:19,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:31:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:31:20,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83070604] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:31:20,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:31:20,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 18:31:20,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663757984] [2022-01-10 18:31:20,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:31:20,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:31:20,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:20,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:31:20,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:31:20,132 INFO L87 Difference]: Start difference. First operand 723 states and 937 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 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) [2022-01-10 18:31:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:20,303 INFO L93 Difference]: Finished difference Result 1512 states and 1951 transitions. [2022-01-10 18:31:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:31:20,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 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 131 [2022-01-10 18:31:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:20,305 INFO L225 Difference]: With dead ends: 1512 [2022-01-10 18:31:20,305 INFO L226 Difference]: Without dead ends: 799 [2022-01-10 18:31:20,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:31:20,306 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 234 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:20,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 1120 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:31:20,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-01-10 18:31:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2022-01-10 18:31:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 1.2744360902255638) internal successors, (1017), 798 states have internal predecessors, (1017), 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) [2022-01-10 18:31:20,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1017 transitions. [2022-01-10 18:31:20,389 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1017 transitions. Word has length 131 [2022-01-10 18:31:20,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:20,389 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1017 transitions. [2022-01-10 18:31:20,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 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) [2022-01-10 18:31:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1017 transitions. [2022-01-10 18:31:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-10 18:31:20,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:20,391 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:20,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 18:31:20,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:31:20,612 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:20,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1392649993, now seen corresponding path program 2 times [2022-01-10 18:31:20,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:20,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028198520] [2022-01-10 18:31:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:20,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-10 18:31:20,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:20,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028198520] [2022-01-10 18:31:20,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028198520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:20,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:20,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:31:20,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595044840] [2022-01-10 18:31:20,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:20,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:31:20,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:20,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:31:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:20,805 INFO L87 Difference]: Start difference. First operand 799 states and 1017 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2022-01-10 18:31:21,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:21,061 INFO L93 Difference]: Finished difference Result 1996 states and 2625 transitions. [2022-01-10 18:31:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:31:21,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 205 [2022-01-10 18:31:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:21,073 INFO L225 Difference]: With dead ends: 1996 [2022-01-10 18:31:21,074 INFO L226 Difference]: Without dead ends: 1607 [2022-01-10 18:31:21,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:21,075 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 439 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:21,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 2030 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:31:21,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2022-01-10 18:31:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 851. [2022-01-10 18:31:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 1.2894117647058823) internal successors, (1096), 850 states have internal predecessors, (1096), 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) [2022-01-10 18:31:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1096 transitions. [2022-01-10 18:31:21,172 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1096 transitions. Word has length 205 [2022-01-10 18:31:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:21,172 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 1096 transitions. [2022-01-10 18:31:21,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2022-01-10 18:31:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1096 transitions. [2022-01-10 18:31:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-10 18:31:21,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:21,176 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:21,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 18:31:21,176 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:21,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:21,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1364020842, now seen corresponding path program 1 times [2022-01-10 18:31:21,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:21,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937274795] [2022-01-10 18:31:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:21,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-10 18:31:21,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:21,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937274795] [2022-01-10 18:31:21,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937274795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:21,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:21,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:31:21,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488197325] [2022-01-10 18:31:21,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:21,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:31:21,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:21,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:31:21,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:31:21,381 INFO L87 Difference]: Start difference. First operand 851 states and 1096 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2022-01-10 18:31:21,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:21,708 INFO L93 Difference]: Finished difference Result 2317 states and 3056 transitions. [2022-01-10 18:31:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:31:21,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 205 [2022-01-10 18:31:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:21,711 INFO L225 Difference]: With dead ends: 2317 [2022-01-10 18:31:21,711 INFO L226 Difference]: Without dead ends: 1876 [2022-01-10 18:31:21,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:31:21,712 INFO L933 BasicCegarLoop]: 774 mSDtfsCounter, 600 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:21,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 3242 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:31:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2022-01-10 18:31:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 845. [2022-01-10 18:31:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 1.2855450236966826) internal successors, (1085), 844 states have internal predecessors, (1085), 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) [2022-01-10 18:31:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1085 transitions. [2022-01-10 18:31:21,822 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1085 transitions. Word has length 205 [2022-01-10 18:31:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:21,822 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1085 transitions. [2022-01-10 18:31:21,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2022-01-10 18:31:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1085 transitions. [2022-01-10 18:31:21,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-10 18:31:21,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:21,824 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:21,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 18:31:21,824 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:21,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash -404301366, now seen corresponding path program 1 times [2022-01-10 18:31:21,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:21,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773794016] [2022-01-10 18:31:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:21,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-10 18:31:22,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:22,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773794016] [2022-01-10 18:31:22,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773794016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:22,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:22,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:31:22,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164112690] [2022-01-10 18:31:22,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:22,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:31:22,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:31:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:31:22,109 INFO L87 Difference]: Start difference. First operand 845 states and 1085 transitions. Second operand has 10 states, 10 states have (on average 13.1) internal successors, (131), 9 states have internal predecessors, (131), 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) [2022-01-10 18:31:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:23,241 INFO L93 Difference]: Finished difference Result 2691 states and 3544 transitions. [2022-01-10 18:31:23,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 18:31:23,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 9 states have internal predecessors, (131), 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 205 [2022-01-10 18:31:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:23,246 INFO L225 Difference]: With dead ends: 2691 [2022-01-10 18:31:23,246 INFO L226 Difference]: Without dead ends: 2256 [2022-01-10 18:31:23,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:31:23,247 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 2849 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2849 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:23,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2849 Valid, 2789 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 18:31:23,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2022-01-10 18:31:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 935. [2022-01-10 18:31:23,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 1.2751605995717346) internal successors, (1191), 934 states have internal predecessors, (1191), 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) [2022-01-10 18:31:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1191 transitions. [2022-01-10 18:31:23,369 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1191 transitions. Word has length 205 [2022-01-10 18:31:23,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:23,369 INFO L470 AbstractCegarLoop]: Abstraction has 935 states and 1191 transitions. [2022-01-10 18:31:23,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 9 states have internal predecessors, (131), 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) [2022-01-10 18:31:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1191 transitions. [2022-01-10 18:31:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-10 18:31:23,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:23,370 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:23,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-10 18:31:23,371 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:23,371 INFO L85 PathProgramCache]: Analyzing trace with hash -943464694, now seen corresponding path program 1 times [2022-01-10 18:31:23,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:23,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977004628] [2022-01-10 18:31:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:23,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-10 18:31:23,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:23,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977004628] [2022-01-10 18:31:23,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977004628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:23,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:23,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 18:31:23,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300092373] [2022-01-10 18:31:23,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:23,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 18:31:23,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 18:31:23,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:31:23,902 INFO L87 Difference]: Start difference. First operand 935 states and 1191 transitions. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 12 states have internal predecessors, (131), 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) [2022-01-10 18:31:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:25,974 INFO L93 Difference]: Finished difference Result 2728 states and 3593 transitions. [2022-01-10 18:31:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 18:31:25,974 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 12 states have internal predecessors, (131), 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 205 [2022-01-10 18:31:25,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:25,977 INFO L225 Difference]: With dead ends: 2728 [2022-01-10 18:31:25,978 INFO L226 Difference]: Without dead ends: 2277 [2022-01-10 18:31:25,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2022-01-10 18:31:25,979 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 4500 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4500 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:25,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4500 Valid, 3538 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 18:31:25,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-01-10 18:31:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 950. [2022-01-10 18:31:26,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 1.2792413066385668) internal successors, (1214), 949 states have internal predecessors, (1214), 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) [2022-01-10 18:31:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1214 transitions. [2022-01-10 18:31:26,137 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1214 transitions. Word has length 205 [2022-01-10 18:31:26,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:26,137 INFO L470 AbstractCegarLoop]: Abstraction has 950 states and 1214 transitions. [2022-01-10 18:31:26,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 12 states have internal predecessors, (131), 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) [2022-01-10 18:31:26,137 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1214 transitions. [2022-01-10 18:31:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-10 18:31:26,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:26,139 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:26,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-10 18:31:26,139 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1587648663, now seen corresponding path program 1 times [2022-01-10 18:31:26,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:26,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033514569] [2022-01-10 18:31:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:26,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-10 18:31:26,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:26,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033514569] [2022-01-10 18:31:26,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033514569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:26,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:26,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:31:26,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095306011] [2022-01-10 18:31:26,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:26,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:31:26,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:26,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:31:26,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:31:26,432 INFO L87 Difference]: Start difference. First operand 950 states and 1214 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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) [2022-01-10 18:31:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:26,937 INFO L93 Difference]: Finished difference Result 1740 states and 2251 transitions. [2022-01-10 18:31:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:31:26,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 205 [2022-01-10 18:31:26,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:26,939 INFO L225 Difference]: With dead ends: 1740 [2022-01-10 18:31:26,939 INFO L226 Difference]: Without dead ends: 1185 [2022-01-10 18:31:26,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:31:26,940 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 761 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:26,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 1012 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:31:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2022-01-10 18:31:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 890. [2022-01-10 18:31:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 1.2699662542182226) internal successors, (1129), 889 states have internal predecessors, (1129), 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) [2022-01-10 18:31:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1129 transitions. [2022-01-10 18:31:27,092 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1129 transitions. Word has length 205 [2022-01-10 18:31:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:27,093 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 1129 transitions. [2022-01-10 18:31:27,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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) [2022-01-10 18:31:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1129 transitions. [2022-01-10 18:31:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-01-10 18:31:27,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:27,094 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:27,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-10 18:31:27,094 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:27,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1427038013, now seen corresponding path program 1 times [2022-01-10 18:31:27,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:27,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139243553] [2022-01-10 18:31:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:27,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-10 18:31:27,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:27,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139243553] [2022-01-10 18:31:27,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139243553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:27,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:27,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:27,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143556085] [2022-01-10 18:31:27,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:27,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:27,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:27,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:27,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:27,162 INFO L87 Difference]: Start difference. First operand 890 states and 1129 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:27,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:27,340 INFO L93 Difference]: Finished difference Result 1632 states and 2071 transitions. [2022-01-10 18:31:27,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:27,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2022-01-10 18:31:27,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:27,342 INFO L225 Difference]: With dead ends: 1632 [2022-01-10 18:31:27,342 INFO L226 Difference]: Without dead ends: 844 [2022-01-10 18:31:27,343 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 [2022-01-10 18:31:27,343 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 193 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:27,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 296 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:27,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-01-10 18:31:27,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 840. [2022-01-10 18:31:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.2145411203814065) internal successors, (1019), 839 states have internal predecessors, (1019), 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) [2022-01-10 18:31:27,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1019 transitions. [2022-01-10 18:31:27,491 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1019 transitions. Word has length 206 [2022-01-10 18:31:27,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:27,491 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1019 transitions. [2022-01-10 18:31:27,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:27,491 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1019 transitions. [2022-01-10 18:31:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-10 18:31:27,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:27,492 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:27,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-10 18:31:27,492 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:27,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash 559060261, now seen corresponding path program 1 times [2022-01-10 18:31:27,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:27,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209128213] [2022-01-10 18:31:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:27,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-10 18:31:27,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:27,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209128213] [2022-01-10 18:31:27,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209128213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:27,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:27,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:31:27,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135586829] [2022-01-10 18:31:27,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:27,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:31:27,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:31:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:31:27,798 INFO L87 Difference]: Start difference. First operand 840 states and 1019 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 9 states have internal predecessors, (133), 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) [2022-01-10 18:31:28,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:28,751 INFO L93 Difference]: Finished difference Result 2047 states and 2541 transitions. [2022-01-10 18:31:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 18:31:28,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 9 states have internal predecessors, (133), 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 207 [2022-01-10 18:31:28,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:28,753 INFO L225 Difference]: With dead ends: 2047 [2022-01-10 18:31:28,753 INFO L226 Difference]: Without dead ends: 1556 [2022-01-10 18:31:28,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:31:28,754 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1947 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:28,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1947 Valid, 2015 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:31:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2022-01-10 18:31:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 840. [2022-01-10 18:31:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.2073897497020263) internal successors, (1013), 839 states have internal predecessors, (1013), 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) [2022-01-10 18:31:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1013 transitions. [2022-01-10 18:31:28,916 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1013 transitions. Word has length 207 [2022-01-10 18:31:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:28,917 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1013 transitions. [2022-01-10 18:31:28,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 9 states have internal predecessors, (133), 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) [2022-01-10 18:31:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1013 transitions. [2022-01-10 18:31:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-10 18:31:28,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:28,918 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:28,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-10 18:31:28,918 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:28,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:28,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1783287239, now seen corresponding path program 1 times [2022-01-10 18:31:28,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:28,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270079404] [2022-01-10 18:31:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:28,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-10 18:31:29,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:29,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270079404] [2022-01-10 18:31:29,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270079404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:29,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:29,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:31:29,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242779169] [2022-01-10 18:31:29,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:29,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:31:29,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:31:29,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:31:29,336 INFO L87 Difference]: Start difference. First operand 840 states and 1013 transitions. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 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) [2022-01-10 18:31:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:30,360 INFO L93 Difference]: Finished difference Result 1616 states and 2003 transitions. [2022-01-10 18:31:30,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:31:30,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 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 207 [2022-01-10 18:31:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:30,364 INFO L225 Difference]: With dead ends: 1616 [2022-01-10 18:31:30,364 INFO L226 Difference]: Without dead ends: 1111 [2022-01-10 18:31:30,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:31:30,364 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1014 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:30,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 1416 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:31:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-01-10 18:31:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 752. [2022-01-10 18:31:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 1.2157123834886818) internal successors, (913), 751 states have internal predecessors, (913), 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) [2022-01-10 18:31:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 913 transitions. [2022-01-10 18:31:30,531 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 913 transitions. Word has length 207 [2022-01-10 18:31:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:30,531 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 913 transitions. [2022-01-10 18:31:30,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 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) [2022-01-10 18:31:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 913 transitions. [2022-01-10 18:31:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-10 18:31:30,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:30,533 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:30,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-10 18:31:30,533 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2022-01-10 18:31:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash -706588379, now seen corresponding path program 1 times [2022-01-10 18:31:30,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:30,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697412351] [2022-01-10 18:31:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:30,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-01-10 18:31:32,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:32,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697412351] [2022-01-10 18:31:32,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697412351] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:31:32,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163573106] [2022-01-10 18:31:32,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:32,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:31:32,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:31:32,212 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) [2022-01-10 18:31:32,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 18:31:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:32,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1899 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 18:31:32,468 INFO L286 TraceCheckSpWp]: Computing forward predicates...