/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:40:15,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:40:15,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:40:15,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 03:40:15,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:40:15,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:40:15,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:40:15,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:40:15,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:40:15,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:40:15,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:40:15,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:40:15,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:40:15,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:40:15,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:40:15,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:40:15,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 03:40:15,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:40:15,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:40:15,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:40:15,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 03:40:15,118 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:40:15,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:40:15,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:40:15,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:40:15,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:40:15,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:40:15,120 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:40:15,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:40:15,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:40:15,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:40:15,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:40:15,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:40:15,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:40:15,120 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:40:15,121 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:40:15,121 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:40:15,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:40:15,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:40:15,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:40:15,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:40:15,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:40:15,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:40:15,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:40:15,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:40:15,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:40:15,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:40:15,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:40:15,122 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:40:15,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:40:15,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:40:15,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:40:15,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:40:15,123 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:40:15,123 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:40:15,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:40:15,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:40:15,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:40:15,320 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:40:15,320 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:40:15,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52.c [2022-01-11 03:40:15,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609c5a076/46201214b0b64a978e8e4bc3a76a262f/FLAGb36edc528 [2022-01-11 03:40:15,891 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:40:15,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label52.c [2022-01-11 03:40:15,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609c5a076/46201214b0b64a978e8e4bc3a76a262f/FLAGb36edc528 [2022-01-11 03:40:16,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609c5a076/46201214b0b64a978e8e4bc3a76a262f [2022-01-11 03:40:16,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:40:16,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:40:16,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:40:16,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:40:16,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:40:16,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:40:16" (1/1) ... [2022-01-11 03:40:16,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d9cc81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:16, skipping insertion in model container [2022-01-11 03:40:16,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:40:16" (1/1) ... [2022-01-11 03:40:16,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:40:16,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:40:16,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label52.c[53923,53936] [2022-01-11 03:40:16,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:40:16,877 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:40:16,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label52.c[53923,53936] [2022-01-11 03:40:17,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:40:17,032 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:40:17,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17 WrapperNode [2022-01-11 03:40:17,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:40:17,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:40:17,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:40:17,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:40:17,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,145 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-11 03:40:17,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:40:17,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:40:17,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:40:17,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:40:17,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:40:17,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:40:17,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:40:17,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:40:17,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:40:17,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:40:17,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 03:40:17,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 03:40:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:40:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:40:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:40:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:40:17,384 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:40:17,385 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:40:18,898 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:40:18,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:40:18,911 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 03:40:18,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:40:18 BoogieIcfgContainer [2022-01-11 03:40:18,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:40:18,915 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:40:18,915 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:40:18,916 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:40:18,919 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:40:18" (1/1) ... [2022-01-11 03:40:19,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:40:19 BasicIcfg [2022-01-11 03:40:19,218 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:40:19,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:40:19,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:40:19,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:40:19,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:40:16" (1/4) ... [2022-01-11 03:40:19,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7765e42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:40:19, skipping insertion in model container [2022-01-11 03:40:19,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:17" (2/4) ... [2022-01-11 03:40:19,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7765e42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:40:19, skipping insertion in model container [2022-01-11 03:40:19,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:40:18" (3/4) ... [2022-01-11 03:40:19,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7765e42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:40:19, skipping insertion in model container [2022-01-11 03:40:19,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:40:19" (4/4) ... [2022-01-11 03:40:19,226 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label52.cTransformedIcfg [2022-01-11 03:40:19,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:40:19,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:40:19,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:40:19,276 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 03:40:19,276 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:40:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-11 03:40:19,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:19,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:19,309 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1051176523, now seen corresponding path program 1 times [2022-01-11 03:40:19,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:19,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440957093] [2022-01-11 03:40:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:19,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:19,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:19,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440957093] [2022-01-11 03:40:19,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440957093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:19,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:19,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:19,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970578557] [2022-01-11 03:40:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:19,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:19,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:19,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:19,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:19,961 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:21,081 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2022-01-11 03:40:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:21,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-01-11 03:40:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:21,091 INFO L225 Difference]: With dead ends: 857 [2022-01-11 03:40:21,091 INFO L226 Difference]: Without dead ends: 462 [2022-01-11 03:40:21,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:21,097 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 142 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:21,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 186 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:40:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-11 03:40:21,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2022-01-11 03:40:21,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2022-01-11 03:40:21,142 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 146 [2022-01-11 03:40:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:21,142 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2022-01-11 03:40:21,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2022-01-11 03:40:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-11 03:40:21,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:21,145 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:21,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 03:40:21,145 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:21,146 INFO L85 PathProgramCache]: Analyzing trace with hash 802694191, now seen corresponding path program 1 times [2022-01-11 03:40:21,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:21,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149346697] [2022-01-11 03:40:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:21,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:21,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:21,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149346697] [2022-01-11 03:40:21,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149346697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:21,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:21,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:21,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909473105] [2022-01-11 03:40:21,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:21,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:21,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:21,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:21,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:21,267 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:22,211 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2022-01-11 03:40:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:22,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-01-11 03:40:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:22,215 INFO L225 Difference]: With dead ends: 1344 [2022-01-11 03:40:22,215 INFO L226 Difference]: Without dead ends: 886 [2022-01-11 03:40:22,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:22,217 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:22,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-01-11 03:40:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2022-01-11 03:40:22,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5132336018411967) internal successors, (1315), 869 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1315 transitions. [2022-01-11 03:40:22,243 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1315 transitions. Word has length 154 [2022-01-11 03:40:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:22,243 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1315 transitions. [2022-01-11 03:40:22,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1315 transitions. [2022-01-11 03:40:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 03:40:22,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:22,255 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:22,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 03:40:22,256 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:22,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2109979799, now seen corresponding path program 1 times [2022-01-11 03:40:22,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:22,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751124117] [2022-01-11 03:40:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:22,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:40:22,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:22,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751124117] [2022-01-11 03:40:22,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751124117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:22,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:22,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:22,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647201361] [2022-01-11 03:40:22,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:22,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:22,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:22,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:22,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:22,474 INFO L87 Difference]: Start difference. First operand 870 states and 1315 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:23,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:23,432 INFO L93 Difference]: Finished difference Result 2559 states and 3882 transitions. [2022-01-11 03:40:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:23,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 161 [2022-01-11 03:40:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:23,438 INFO L225 Difference]: With dead ends: 2559 [2022-01-11 03:40:23,438 INFO L226 Difference]: Without dead ends: 1691 [2022-01-11 03:40:23,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:23,443 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 104 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:23,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 403 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:23,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2022-01-11 03:40:23,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1685. [2022-01-11 03:40:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 1.4388361045130642) internal successors, (2423), 1684 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2423 transitions. [2022-01-11 03:40:23,471 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2423 transitions. Word has length 161 [2022-01-11 03:40:23,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:23,471 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 2423 transitions. [2022-01-11 03:40:23,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:23,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2423 transitions. [2022-01-11 03:40:23,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-11 03:40:23,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:23,475 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:23,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 03:40:23,475 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1253522147, now seen corresponding path program 1 times [2022-01-11 03:40:23,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:23,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120180191] [2022-01-11 03:40:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:23,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:40:23,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:23,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120180191] [2022-01-11 03:40:23,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120180191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:23,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:23,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:23,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972839776] [2022-01-11 03:40:23,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:23,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:23,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:23,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:23,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:23,585 INFO L87 Difference]: Start difference. First operand 1685 states and 2423 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:24,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:24,478 INFO L93 Difference]: Finished difference Result 3787 states and 5410 transitions. [2022-01-11 03:40:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:24,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 167 [2022-01-11 03:40:24,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:24,484 INFO L225 Difference]: With dead ends: 3787 [2022-01-11 03:40:24,484 INFO L226 Difference]: Without dead ends: 2104 [2022-01-11 03:40:24,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:24,487 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 218 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:24,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 409 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:40:24,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2022-01-11 03:40:24,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2100. [2022-01-11 03:40:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 1.4073368270605051) internal successors, (2954), 2099 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2954 transitions. [2022-01-11 03:40:24,521 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2954 transitions. Word has length 167 [2022-01-11 03:40:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:24,521 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 2954 transitions. [2022-01-11 03:40:24,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2954 transitions. [2022-01-11 03:40:24,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-11 03:40:24,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:24,525 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:24,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 03:40:24,525 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:24,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2029793569, now seen corresponding path program 1 times [2022-01-11 03:40:24,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:24,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130512765] [2022-01-11 03:40:24,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:24,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:24,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:24,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130512765] [2022-01-11 03:40:24,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130512765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:24,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:24,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:24,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119762487] [2022-01-11 03:40:24,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:24,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:24,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:24,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:24,629 INFO L87 Difference]: Start difference. First operand 2100 states and 2954 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:25,533 INFO L93 Difference]: Finished difference Result 6232 states and 8772 transitions. [2022-01-11 03:40:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:25,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2022-01-11 03:40:25,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:25,545 INFO L225 Difference]: With dead ends: 6232 [2022-01-11 03:40:25,545 INFO L226 Difference]: Without dead ends: 4134 [2022-01-11 03:40:25,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:25,550 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 224 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:25,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 165 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2022-01-11 03:40:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 4132. [2022-01-11 03:40:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 4131 states have (on average 1.2856451222464294) internal successors, (5311), 4131 states have internal predecessors, (5311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 5311 transitions. [2022-01-11 03:40:25,607 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 5311 transitions. Word has length 169 [2022-01-11 03:40:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:25,608 INFO L470 AbstractCegarLoop]: Abstraction has 4132 states and 5311 transitions. [2022-01-11 03:40:25,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 5311 transitions. [2022-01-11 03:40:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-11 03:40:25,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:25,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:25,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 03:40:25,620 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:25,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:25,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1117164154, now seen corresponding path program 1 times [2022-01-11 03:40:25,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:25,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079179493] [2022-01-11 03:40:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:25,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:25,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:25,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079179493] [2022-01-11 03:40:25,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079179493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:25,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:25,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:25,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787511900] [2022-01-11 03:40:25,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:25,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:25,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:25,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:25,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:25,715 INFO L87 Difference]: Start difference. First operand 4132 states and 5311 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:26,710 INFO L93 Difference]: Finished difference Result 10744 states and 13744 transitions. [2022-01-11 03:40:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:26,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2022-01-11 03:40:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:26,728 INFO L225 Difference]: With dead ends: 10744 [2022-01-11 03:40:26,728 INFO L226 Difference]: Without dead ends: 6614 [2022-01-11 03:40:26,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:26,736 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 220 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:26,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 193 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2022-01-11 03:40:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6610. [2022-01-11 03:40:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6610 states, 6609 states have (on average 1.2722045695264035) internal successors, (8408), 6609 states have internal predecessors, (8408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6610 states to 6610 states and 8408 transitions. [2022-01-11 03:40:26,820 INFO L78 Accepts]: Start accepts. Automaton has 6610 states and 8408 transitions. Word has length 174 [2022-01-11 03:40:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:26,820 INFO L470 AbstractCegarLoop]: Abstraction has 6610 states and 8408 transitions. [2022-01-11 03:40:26,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6610 states and 8408 transitions. [2022-01-11 03:40:26,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 03:40:26,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:26,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:26,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 03:40:26,827 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1564524840, now seen corresponding path program 1 times [2022-01-11 03:40:26,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:26,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578692984] [2022-01-11 03:40:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:26,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:26,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:26,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578692984] [2022-01-11 03:40:26,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578692984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:26,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:26,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:26,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793889023] [2022-01-11 03:40:26,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:26,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:26,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:26,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:26,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:26,921 INFO L87 Difference]: Start difference. First operand 6610 states and 8408 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:27,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:27,861 INFO L93 Difference]: Finished difference Result 19136 states and 24376 transitions. [2022-01-11 03:40:27,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:27,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 03:40:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:27,901 INFO L225 Difference]: With dead ends: 19136 [2022-01-11 03:40:27,901 INFO L226 Difference]: Without dead ends: 12528 [2022-01-11 03:40:27,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:27,914 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 234 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:27,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 205 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12528 states. [2022-01-11 03:40:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12528 to 12524. [2022-01-11 03:40:28,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12524 states, 12523 states have (on average 1.2373233250818494) internal successors, (15495), 12523 states have internal predecessors, (15495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12524 states to 12524 states and 15495 transitions. [2022-01-11 03:40:28,113 INFO L78 Accepts]: Start accepts. Automaton has 12524 states and 15495 transitions. Word has length 176 [2022-01-11 03:40:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:28,113 INFO L470 AbstractCegarLoop]: Abstraction has 12524 states and 15495 transitions. [2022-01-11 03:40:28,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 12524 states and 15495 transitions. [2022-01-11 03:40:28,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-11 03:40:28,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:28,125 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:28,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 03:40:28,125 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:28,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:28,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1558832866, now seen corresponding path program 1 times [2022-01-11 03:40:28,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:28,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189619734] [2022-01-11 03:40:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:28,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:28,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:28,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189619734] [2022-01-11 03:40:28,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189619734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:28,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:28,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:28,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545217783] [2022-01-11 03:40:28,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:28,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:28,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:28,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:28,290 INFO L87 Difference]: Start difference. First operand 12524 states and 15495 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:29,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:29,663 INFO L93 Difference]: Finished difference Result 41161 states and 50953 transitions. [2022-01-11 03:40:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:29,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2022-01-11 03:40:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:29,788 INFO L225 Difference]: With dead ends: 41161 [2022-01-11 03:40:29,789 INFO L226 Difference]: Without dead ends: 28639 [2022-01-11 03:40:29,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:29,800 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 775 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:29,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 455 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-11 03:40:29,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28639 states. [2022-01-11 03:40:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28639 to 28630. [2022-01-11 03:40:30,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28630 states, 28629 states have (on average 1.2205805302315833) internal successors, (34944), 28629 states have internal predecessors, (34944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28630 states to 28630 states and 34944 transitions. [2022-01-11 03:40:30,141 INFO L78 Accepts]: Start accepts. Automaton has 28630 states and 34944 transitions. Word has length 181 [2022-01-11 03:40:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:30,142 INFO L470 AbstractCegarLoop]: Abstraction has 28630 states and 34944 transitions. [2022-01-11 03:40:30,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand 28630 states and 34944 transitions. [2022-01-11 03:40:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-11 03:40:30,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:30,166 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:30,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 03:40:30,166 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash -283945904, now seen corresponding path program 1 times [2022-01-11 03:40:30,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:30,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849787046] [2022-01-11 03:40:30,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:30,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-11 03:40:30,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:30,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849787046] [2022-01-11 03:40:30,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849787046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:30,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:30,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:30,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626829531] [2022-01-11 03:40:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:30,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:30,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:30,331 INFO L87 Difference]: Start difference. First operand 28630 states and 34944 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:30,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:30,941 INFO L93 Difference]: Finished difference Result 54924 states and 67149 transitions. [2022-01-11 03:40:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:30,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 197 [2022-01-11 03:40:30,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:30,978 INFO L225 Difference]: With dead ends: 54924 [2022-01-11 03:40:30,978 INFO L226 Difference]: Without dead ends: 26296 [2022-01-11 03:40:31,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:31,006 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 309 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:31,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 03:40:31,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26296 states. [2022-01-11 03:40:31,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26296 to 25281. [2022-01-11 03:40:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25281 states, 25280 states have (on average 1.2077927215189874) internal successors, (30533), 25280 states have internal predecessors, (30533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25281 states to 25281 states and 30533 transitions. [2022-01-11 03:40:31,375 INFO L78 Accepts]: Start accepts. Automaton has 25281 states and 30533 transitions. Word has length 197 [2022-01-11 03:40:31,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:31,375 INFO L470 AbstractCegarLoop]: Abstraction has 25281 states and 30533 transitions. [2022-01-11 03:40:31,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 25281 states and 30533 transitions. [2022-01-11 03:40:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-01-11 03:40:31,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:31,389 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:31,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 03:40:31,389 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:31,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:31,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1085091721, now seen corresponding path program 1 times [2022-01-11 03:40:31,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:31,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786430035] [2022-01-11 03:40:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:31,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:31,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:31,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786430035] [2022-01-11 03:40:31,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786430035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:31,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:31,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:31,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411173520] [2022-01-11 03:40:31,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:31,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:31,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:31,673 INFO L87 Difference]: Start difference. First operand 25281 states and 30533 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:32,694 INFO L93 Difference]: Finished difference Result 65641 states and 79052 transitions. [2022-01-11 03:40:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:32,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2022-01-11 03:40:32,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:32,750 INFO L225 Difference]: With dead ends: 65641 [2022-01-11 03:40:32,750 INFO L226 Difference]: Without dead ends: 40362 [2022-01-11 03:40:32,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:32,773 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 167 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:32,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 69 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:40:32,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40362 states. [2022-01-11 03:40:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40362 to 40360. [2022-01-11 03:40:33,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40360 states, 40359 states have (on average 1.189350578557447) internal successors, (48001), 40359 states have internal predecessors, (48001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40360 states to 40360 states and 48001 transitions. [2022-01-11 03:40:33,338 INFO L78 Accepts]: Start accepts. Automaton has 40360 states and 48001 transitions. Word has length 219 [2022-01-11 03:40:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:33,338 INFO L470 AbstractCegarLoop]: Abstraction has 40360 states and 48001 transitions. [2022-01-11 03:40:33,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 40360 states and 48001 transitions. [2022-01-11 03:40:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-11 03:40:33,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:33,357 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:33,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 03:40:33,358 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:33,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash -846847933, now seen corresponding path program 1 times [2022-01-11 03:40:33,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:33,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571230058] [2022-01-11 03:40:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:33,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:33,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:33,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571230058] [2022-01-11 03:40:33,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571230058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:33,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:33,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:33,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63545483] [2022-01-11 03:40:33,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:33,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:33,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:33,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:33,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:33,781 INFO L87 Difference]: Start difference. First operand 40360 states and 48001 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:34,933 INFO L93 Difference]: Finished difference Result 80329 states and 95496 transitions. [2022-01-11 03:40:34,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:34,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2022-01-11 03:40:34,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:34,986 INFO L225 Difference]: With dead ends: 80329 [2022-01-11 03:40:34,987 INFO L226 Difference]: Without dead ends: 39971 [2022-01-11 03:40:34,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:34,996 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 79 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:34,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 358 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39971 states. [2022-01-11 03:40:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39971 to 39954. [2022-01-11 03:40:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39954 states, 39953 states have (on average 1.1820639251120066) internal successors, (47227), 39953 states have internal predecessors, (47227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39954 states to 39954 states and 47227 transitions. [2022-01-11 03:40:35,470 INFO L78 Accepts]: Start accepts. Automaton has 39954 states and 47227 transitions. Word has length 220 [2022-01-11 03:40:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:35,470 INFO L470 AbstractCegarLoop]: Abstraction has 39954 states and 47227 transitions. [2022-01-11 03:40:35,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:35,470 INFO L276 IsEmpty]: Start isEmpty. Operand 39954 states and 47227 transitions. [2022-01-11 03:40:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-11 03:40:35,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:35,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:35,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 03:40:35,487 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1470506759, now seen corresponding path program 1 times [2022-01-11 03:40:35,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:35,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309080432] [2022-01-11 03:40:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:35,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:35,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:35,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309080432] [2022-01-11 03:40:35,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309080432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:35,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:35,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:35,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926265061] [2022-01-11 03:40:35,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:35,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:35,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:35,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:35,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:35,626 INFO L87 Difference]: Start difference. First operand 39954 states and 47227 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:36,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:36,734 INFO L93 Difference]: Finished difference Result 97227 states and 115538 transitions. [2022-01-11 03:40:36,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:36,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2022-01-11 03:40:36,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:36,820 INFO L225 Difference]: With dead ends: 97227 [2022-01-11 03:40:36,820 INFO L226 Difference]: Without dead ends: 57275 [2022-01-11 03:40:36,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:36,848 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:36,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 190 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:36,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57275 states. [2022-01-11 03:40:37,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57275 to 57221. [2022-01-11 03:40:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57221 states, 57220 states have (on average 1.1875917511359664) internal successors, (67954), 57220 states have internal predecessors, (67954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57221 states to 57221 states and 67954 transitions. [2022-01-11 03:40:37,724 INFO L78 Accepts]: Start accepts. Automaton has 57221 states and 67954 transitions. Word has length 221 [2022-01-11 03:40:37,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:37,724 INFO L470 AbstractCegarLoop]: Abstraction has 57221 states and 67954 transitions. [2022-01-11 03:40:37,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 57221 states and 67954 transitions. [2022-01-11 03:40:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-01-11 03:40:37,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:37,742 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:37,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 03:40:37,743 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash -465312735, now seen corresponding path program 1 times [2022-01-11 03:40:37,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:37,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241568308] [2022-01-11 03:40:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:37,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 77 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:37,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:37,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241568308] [2022-01-11 03:40:37,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241568308] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:40:37,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013260973] [2022-01-11 03:40:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:37,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:40:37,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:40:37,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:40:37,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 03:40:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:38,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 6926 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-11 03:40:38,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:40:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:40:39,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:40:39,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013260973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:39,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 03:40:39,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-11 03:40:39,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518987236] [2022-01-11 03:40:39,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:39,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:39,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:39,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:39,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:40:39,042 INFO L87 Difference]: Start difference. First operand 57221 states and 67954 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:40,151 INFO L93 Difference]: Finished difference Result 114447 states and 135918 transitions. [2022-01-11 03:40:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:40,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 226 [2022-01-11 03:40:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:40,228 INFO L225 Difference]: With dead ends: 114447 [2022-01-11 03:40:40,228 INFO L226 Difference]: Without dead ends: 57228 [2022-01-11 03:40:40,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:40:40,244 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 118 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:40,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 290 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 03:40:40,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57228 states. [2022-01-11 03:40:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57228 to 56206. [2022-01-11 03:40:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56206 states, 56205 states have (on average 1.175998576639089) internal successors, (66097), 56205 states have internal predecessors, (66097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56206 states to 56206 states and 66097 transitions. [2022-01-11 03:40:40,924 INFO L78 Accepts]: Start accepts. Automaton has 56206 states and 66097 transitions. Word has length 226 [2022-01-11 03:40:40,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:40,924 INFO L470 AbstractCegarLoop]: Abstraction has 56206 states and 66097 transitions. [2022-01-11 03:40:40,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:40,925 INFO L276 IsEmpty]: Start isEmpty. Operand 56206 states and 66097 transitions. [2022-01-11 03:40:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-01-11 03:40:40,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:40,944 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:40,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 03:40:41,154 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,SelfDestructingSolverStorable12 [2022-01-11 03:40:41,155 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:41,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:41,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1655901012, now seen corresponding path program 1 times [2022-01-11 03:40:41,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:41,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319057588] [2022-01-11 03:40:41,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:41,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-11 03:40:41,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:41,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319057588] [2022-01-11 03:40:41,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319057588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:41,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:41,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:41,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739833411] [2022-01-11 03:40:41,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:41,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:41,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:41,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:41,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:41,319 INFO L87 Difference]: Start difference. First operand 56206 states and 66097 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:42,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:42,588 INFO L93 Difference]: Finished difference Result 120980 states and 142076 transitions. [2022-01-11 03:40:42,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:42,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 245 [2022-01-11 03:40:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:42,667 INFO L225 Difference]: With dead ends: 120980 [2022-01-11 03:40:42,667 INFO L226 Difference]: Without dead ends: 64776 [2022-01-11 03:40:42,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:42,704 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 167 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:42,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 332 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:40:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64776 states. [2022-01-11 03:40:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64776 to 58845. [2022-01-11 03:40:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58845 states, 58844 states have (on average 1.1619196519611175) internal successors, (68372), 58844 states have internal predecessors, (68372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58845 states to 58845 states and 68372 transitions. [2022-01-11 03:40:43,713 INFO L78 Accepts]: Start accepts. Automaton has 58845 states and 68372 transitions. Word has length 245 [2022-01-11 03:40:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:43,714 INFO L470 AbstractCegarLoop]: Abstraction has 58845 states and 68372 transitions. [2022-01-11 03:40:43,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 58845 states and 68372 transitions. [2022-01-11 03:40:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-11 03:40:43,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:43,743 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:43,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 03:40:43,743 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:43,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1249535402, now seen corresponding path program 1 times [2022-01-11 03:40:43,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:43,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537276045] [2022-01-11 03:40:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:43,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-11 03:40:43,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:43,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537276045] [2022-01-11 03:40:43,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537276045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:43,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:43,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:43,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233486920] [2022-01-11 03:40:43,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:43,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:43,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:43,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:43,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:43,899 INFO L87 Difference]: Start difference. First operand 58845 states and 68372 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:45,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:45,591 INFO L93 Difference]: Finished difference Result 118551 states and 137746 transitions. [2022-01-11 03:40:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:45,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 261 [2022-01-11 03:40:45,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:45,665 INFO L225 Difference]: With dead ends: 118551 [2022-01-11 03:40:45,666 INFO L226 Difference]: Without dead ends: 59708 [2022-01-11 03:40:45,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:45,701 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 385 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:45,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 93 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-11 03:40:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59708 states. [2022-01-11 03:40:46,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59708 to 55394. [2022-01-11 03:40:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55394 states, 55393 states have (on average 1.1646417417363204) internal successors, (64513), 55393 states have internal predecessors, (64513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55394 states to 55394 states and 64513 transitions. [2022-01-11 03:40:46,668 INFO L78 Accepts]: Start accepts. Automaton has 55394 states and 64513 transitions. Word has length 261 [2022-01-11 03:40:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:46,668 INFO L470 AbstractCegarLoop]: Abstraction has 55394 states and 64513 transitions. [2022-01-11 03:40:46,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 55394 states and 64513 transitions. [2022-01-11 03:40:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 03:40:46,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:46,685 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:46,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 03:40:46,686 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1638592274, now seen corresponding path program 1 times [2022-01-11 03:40:46,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:46,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298003835] [2022-01-11 03:40:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:46,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-11 03:40:46,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:46,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298003835] [2022-01-11 03:40:46,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298003835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:46,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:46,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:46,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286256254] [2022-01-11 03:40:46,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:46,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:46,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:46,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:46,803 INFO L87 Difference]: Start difference. First operand 55394 states and 64513 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:48,275 INFO L93 Difference]: Finished difference Result 153358 states and 178693 transitions. [2022-01-11 03:40:48,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:48,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 268 [2022-01-11 03:40:48,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:48,398 INFO L225 Difference]: With dead ends: 153358 [2022-01-11 03:40:48,398 INFO L226 Difference]: Without dead ends: 97966 [2022-01-11 03:40:48,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:48,442 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 490 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:48,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 475 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-11 03:40:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97966 states. [2022-01-11 03:40:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97966 to 95510. [2022-01-11 03:40:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95510 states, 95509 states have (on average 1.1669580877194818) internal successors, (111455), 95509 states have internal predecessors, (111455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95510 states to 95510 states and 111455 transitions. [2022-01-11 03:40:49,871 INFO L78 Accepts]: Start accepts. Automaton has 95510 states and 111455 transitions. Word has length 268 [2022-01-11 03:40:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:49,871 INFO L470 AbstractCegarLoop]: Abstraction has 95510 states and 111455 transitions. [2022-01-11 03:40:49,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:49,872 INFO L276 IsEmpty]: Start isEmpty. Operand 95510 states and 111455 transitions. [2022-01-11 03:40:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-01-11 03:40:49,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:49,896 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:49,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 03:40:49,896 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1142607997, now seen corresponding path program 1 times [2022-01-11 03:40:49,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:49,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233826198] [2022-01-11 03:40:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:49,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-11 03:40:50,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:50,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233826198] [2022-01-11 03:40:50,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233826198] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:40:50,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55183465] [2022-01-11 03:40:50,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:50,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:40:50,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:40:50,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:40:50,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 03:40:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:50,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 8501 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-11 03:40:50,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:40:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-01-11 03:40:51,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:40:51,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55183465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:51,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 03:40:51,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-11 03:40:51,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955492677] [2022-01-11 03:40:51,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:51,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:51,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:51,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:51,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:40:51,373 INFO L87 Difference]: Start difference. First operand 95510 states and 111455 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:52,689 INFO L93 Difference]: Finished difference Result 206858 states and 240167 transitions. [2022-01-11 03:40:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:52,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 278 [2022-01-11 03:40:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:52,862 INFO L225 Difference]: With dead ends: 206858 [2022-01-11 03:40:52,862 INFO L226 Difference]: Without dead ends: 109929 [2022-01-11 03:40:52,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:40:52,935 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 71 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:52,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 379 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 03:40:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109929 states. [2022-01-11 03:40:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109929 to 99765. [2022-01-11 03:40:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99765 states, 99764 states have (on average 1.1135179022493085) internal successors, (111089), 99764 states have internal predecessors, (111089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99765 states to 99765 states and 111089 transitions. [2022-01-11 03:40:54,654 INFO L78 Accepts]: Start accepts. Automaton has 99765 states and 111089 transitions. Word has length 278 [2022-01-11 03:40:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:54,654 INFO L470 AbstractCegarLoop]: Abstraction has 99765 states and 111089 transitions. [2022-01-11 03:40:54,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 99765 states and 111089 transitions. [2022-01-11 03:40:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-01-11 03:40:54,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:54,681 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:54,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 03:40:54,881 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,SelfDestructingSolverStorable16 [2022-01-11 03:40:54,882 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:54,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1601401277, now seen corresponding path program 1 times [2022-01-11 03:40:54,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:54,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020258210] [2022-01-11 03:40:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:54,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-11 03:40:55,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:55,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020258210] [2022-01-11 03:40:55,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020258210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:55,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:55,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:55,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228698581] [2022-01-11 03:40:55,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:55,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:55,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:55,034 INFO L87 Difference]: Start difference. First operand 99765 states and 111089 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:56,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:56,455 INFO L93 Difference]: Finished difference Result 181781 states and 201732 transitions. [2022-01-11 03:40:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:56,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 308 [2022-01-11 03:40:56,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:56,582 INFO L225 Difference]: With dead ends: 181781 [2022-01-11 03:40:56,583 INFO L226 Difference]: Without dead ends: 82018 [2022-01-11 03:40:56,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:56,629 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 235 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:56,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 313 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:56,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82018 states. [2022-01-11 03:40:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82018 to 80580. [2022-01-11 03:40:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80580 states, 80579 states have (on average 1.0903461199568125) internal successors, (87859), 80579 states have internal predecessors, (87859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80580 states to 80580 states and 87859 transitions. [2022-01-11 03:40:57,824 INFO L78 Accepts]: Start accepts. Automaton has 80580 states and 87859 transitions. Word has length 308 [2022-01-11 03:40:57,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:57,824 INFO L470 AbstractCegarLoop]: Abstraction has 80580 states and 87859 transitions. [2022-01-11 03:40:57,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 80580 states and 87859 transitions. [2022-01-11 03:40:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-01-11 03:40:57,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:57,842 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:57,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 03:40:57,843 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:57,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:57,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1201538371, now seen corresponding path program 1 times [2022-01-11 03:40:57,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:57,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614028952] [2022-01-11 03:40:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:57,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-01-11 03:40:58,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:58,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614028952] [2022-01-11 03:40:58,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614028952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:58,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:58,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:58,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686302473] [2022-01-11 03:40:58,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:58,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:58,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:58,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:58,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:58,190 INFO L87 Difference]: Start difference. First operand 80580 states and 87859 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:59,091 INFO L93 Difference]: Finished difference Result 226219 states and 246823 transitions. [2022-01-11 03:40:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:59,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 314 [2022-01-11 03:40:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:59,326 INFO L225 Difference]: With dead ends: 226219 [2022-01-11 03:40:59,327 INFO L226 Difference]: Without dead ends: 145641 [2022-01-11 03:40:59,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:59,376 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 277 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:59,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 776 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 03:40:59,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145641 states. [2022-01-11 03:41:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145641 to 136299. [2022-01-11 03:41:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136299 states, 136298 states have (on average 1.0901333842022627) internal successors, (148583), 136298 states have internal predecessors, (148583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136299 states to 136299 states and 148583 transitions. [2022-01-11 03:41:01,408 INFO L78 Accepts]: Start accepts. Automaton has 136299 states and 148583 transitions. Word has length 314 [2022-01-11 03:41:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:41:01,408 INFO L470 AbstractCegarLoop]: Abstraction has 136299 states and 148583 transitions. [2022-01-11 03:41:01,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 136299 states and 148583 transitions. [2022-01-11 03:41:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-01-11 03:41:01,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:41:01,443 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:41:01,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 03:41:01,443 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:41:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:41:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash 793056713, now seen corresponding path program 1 times [2022-01-11 03:41:01,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:41:01,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999904587] [2022-01-11 03:41:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:41:01,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:41:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:41:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-11 03:41:01,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:41:01,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999904587] [2022-01-11 03:41:01,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999904587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:41:01,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:41:01,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:41:01,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201353266] [2022-01-11 03:41:01,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:41:01,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:41:01,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:41:01,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:41:01,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:41:01,887 INFO L87 Difference]: Start difference. First operand 136299 states and 148583 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:41:03,569 INFO L93 Difference]: Finished difference Result 275052 states and 299784 transitions. [2022-01-11 03:41:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:41:03,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 323 [2022-01-11 03:41:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:41:03,965 INFO L225 Difference]: With dead ends: 275052 [2022-01-11 03:41:03,965 INFO L226 Difference]: Without dead ends: 138755 [2022-01-11 03:41:04,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:41:04,028 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 328 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:41:04,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 133 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:41:04,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138755 states. [2022-01-11 03:41:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138755 to 138735. [2022-01-11 03:41:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138735 states, 138734 states have (on average 1.088002940879669) internal successors, (150943), 138734 states have internal predecessors, (150943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138735 states to 138735 states and 150943 transitions. [2022-01-11 03:41:05,948 INFO L78 Accepts]: Start accepts. Automaton has 138735 states and 150943 transitions. Word has length 323 [2022-01-11 03:41:05,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:41:05,949 INFO L470 AbstractCegarLoop]: Abstraction has 138735 states and 150943 transitions. [2022-01-11 03:41:05,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 138735 states and 150943 transitions. [2022-01-11 03:41:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-01-11 03:41:05,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:41:05,985 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:41:05,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 03:41:05,985 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:41:05,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:41:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash -853305792, now seen corresponding path program 1 times [2022-01-11 03:41:05,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:41:05,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486051656] [2022-01-11 03:41:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:41:05,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:41:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:41:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-11 03:41:06,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:41:06,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486051656] [2022-01-11 03:41:06,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486051656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:41:06,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:41:06,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:41:06,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056326720] [2022-01-11 03:41:06,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:41:06,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:41:06,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:41:06,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:41:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:41:06,498 INFO L87 Difference]: Start difference. First operand 138735 states and 150943 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:41:07,825 INFO L93 Difference]: Finished difference Result 358413 states and 389405 transitions. [2022-01-11 03:41:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:41:07,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 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 352 [2022-01-11 03:41:07,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:41:08,155 INFO L225 Difference]: With dead ends: 358413 [2022-01-11 03:41:08,156 INFO L226 Difference]: Without dead ends: 219680 [2022-01-11 03:41:08,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:41:08,208 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 183 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:41:08,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 475 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 03:41:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219680 states. [2022-01-11 03:41:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219680 to 219670. [2022-01-11 03:41:11,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219670 states, 219669 states have (on average 1.0849505392203724) internal successors, (238330), 219669 states have internal predecessors, (238330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219670 states to 219670 states and 238330 transitions. [2022-01-11 03:41:11,752 INFO L78 Accepts]: Start accepts. Automaton has 219670 states and 238330 transitions. Word has length 352 [2022-01-11 03:41:11,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:41:11,753 INFO L470 AbstractCegarLoop]: Abstraction has 219670 states and 238330 transitions. [2022-01-11 03:41:11,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:11,753 INFO L276 IsEmpty]: Start isEmpty. Operand 219670 states and 238330 transitions. [2022-01-11 03:41:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-01-11 03:41:11,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:41:11,790 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:41:11,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 03:41:11,790 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:41:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:41:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1471776302, now seen corresponding path program 1 times [2022-01-11 03:41:11,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:41:11,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420966714] [2022-01-11 03:41:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:41:11,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms