/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_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:29:20,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:29:20,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:29:20,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:29:20,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:29:20,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:29:20,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:29:20,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:29:20,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:29:20,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:29:20,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:29:20,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:29:20,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:29:20,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:29:20,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:29:20,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:29:20,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:29:20,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:29:20,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:29:20,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:29:20,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:29:20,169 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:29:20,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:29:20,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:29:20,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:29:20,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:29:20,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:29:20,171 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:29:20,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:29:20,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:29:20,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:29:20,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:29:20,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:29:20,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:29:20,172 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:29:20,172 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:29:20,172 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:29:20,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:29:20,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:29:20,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:29:20,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:29:20,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:29:20,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:29:20,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:29:20,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:29:20,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:29:20,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:29:20,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:29:20,174 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:29:20,174 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:29:20,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:29:20,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:29:20,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:29:20,175 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:29:20,175 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:29:20,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:29:20,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:29:20,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:29:20,407 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:29:20,407 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:29:20,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2022-01-11 00:29:20,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905e4d7e8/c2186e1d4f2449d8a0c616e61177f7c2/FLAGad51c9abf [2022-01-11 00:29:20,826 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:29:20,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2022-01-11 00:29:20,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905e4d7e8/c2186e1d4f2449d8a0c616e61177f7c2/FLAGad51c9abf [2022-01-11 00:29:20,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905e4d7e8/c2186e1d4f2449d8a0c616e61177f7c2 [2022-01-11 00:29:20,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:29:20,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:29:20,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:29:20,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:29:20,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:29:20,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@660caa6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20, skipping insertion in model container [2022-01-11 00:29:20,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:29:20,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:29:21,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c[14371,14384] [2022-01-11 00:29:21,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:29:21,120 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:29:21,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c[14371,14384] [2022-01-11 00:29:21,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:29:21,198 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:29:21,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21 WrapperNode [2022-01-11 00:29:21,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:29:21,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:29:21,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:29:21,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:29:21,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,269 INFO L137 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 459 [2022-01-11 00:29:21,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:29:21,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:29:21,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:29:21,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:29:21,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:29:21,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:29:21,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:29:21,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:29:21,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:29:21,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:29:21,354 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 00:29:21,360 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 00:29:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:29:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:29:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:29:21,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:29:21,462 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:29:21,463 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:29:21,834 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:29:21,839 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:29:21,840 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 00:29:21,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:21 BoogieIcfgContainer [2022-01-11 00:29:21,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:29:21,842 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:29:21,842 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:29:21,843 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:29:21,845 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:22,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:29:22 BasicIcfg [2022-01-11 00:29:22,206 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:29:22,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:29:22,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:29:22,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:29:22,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:29:20" (1/4) ... [2022-01-11 00:29:22,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b10ea38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:29:22, skipping insertion in model container [2022-01-11 00:29:22,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:21" (2/4) ... [2022-01-11 00:29:22,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b10ea38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:29:22, skipping insertion in model container [2022-01-11 00:29:22,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:21" (3/4) ... [2022-01-11 00:29:22,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b10ea38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:29:22, skipping insertion in model container [2022-01-11 00:29:22,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:29:22" (4/4) ... [2022-01-11 00:29:22,213 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.cTransformedIcfg [2022-01-11 00:29:22,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:29:22,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:29:22,262 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:29:22,267 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 00:29:22,267 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:29:22,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 142 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 00:29:22,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:29:22,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,287 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] [2022-01-11 00:29:22,287 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1568228201, now seen corresponding path program 1 times [2022-01-11 00:29:22,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574692295] [2022-01-11 00:29:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,599 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 00:29:22,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574692295] [2022-01-11 00:29:22,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574692295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:29:22,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702231699] [2022-01-11 00:29:22,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:29:22,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:29:22,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:29:22,637 INFO L87 Difference]: Start difference. First operand has 143 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 142 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) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:22,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,674 INFO L93 Difference]: Finished difference Result 227 states and 388 transitions. [2022-01-11 00:29:22,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:29:22,676 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 00:29:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,685 INFO L225 Difference]: With dead ends: 227 [2022-01-11 00:29:22,685 INFO L226 Difference]: Without dead ends: 139 [2022-01-11 00:29:22,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:29:22,693 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-11 00:29:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-01-11 00:29:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.7463768115942029) internal successors, (241), 138 states have internal predecessors, (241), 0 states have call successors, (0), 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 00:29:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 241 transitions. [2022-01-11 00:29:22,736 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 241 transitions. Word has length 37 [2022-01-11 00:29:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,737 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 241 transitions. [2022-01-11 00:29:22,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 241 transitions. [2022-01-11 00:29:22,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:29:22,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,742 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] [2022-01-11 00:29:22,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:29:22,743 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1159403976, now seen corresponding path program 1 times [2022-01-11 00:29:22,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661279447] [2022-01-11 00:29:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,927 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 00:29:22,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661279447] [2022-01-11 00:29:22,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661279447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:22,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488477243] [2022-01-11 00:29:22,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:22,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:22,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:22,932 INFO L87 Difference]: Start difference. First operand 139 states and 241 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,014 INFO L93 Difference]: Finished difference Result 222 states and 378 transitions. [2022-01-11 00:29:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:29:23,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 00:29:23,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,017 INFO L225 Difference]: With dead ends: 222 [2022-01-11 00:29:23,017 INFO L226 Difference]: Without dead ends: 139 [2022-01-11 00:29:23,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:29:23,022 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 3 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 923 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-11 00:29:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-01-11 00:29:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.5289855072463767) internal successors, (211), 138 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 00:29:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 211 transitions. [2022-01-11 00:29:23,032 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 211 transitions. Word has length 37 [2022-01-11 00:29:23,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,033 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 211 transitions. [2022-01-11 00:29:23,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 211 transitions. [2022-01-11 00:29:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:29:23,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,034 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] [2022-01-11 00:29:23,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:29:23,034 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1832970799, now seen corresponding path program 1 times [2022-01-11 00:29:23,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234954674] [2022-01-11 00:29:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,240 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 00:29:23,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234954674] [2022-01-11 00:29:23,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234954674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:23,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912457116] [2022-01-11 00:29:23,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:23,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:23,243 INFO L87 Difference]: Start difference. First operand 139 states and 211 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 00:29:25,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:29:27,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:29:27,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:27,602 INFO L93 Difference]: Finished difference Result 287 states and 459 transitions. [2022-01-11 00:29:27,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:27,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-11 00:29:27,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:27,604 INFO L225 Difference]: With dead ends: 287 [2022-01-11 00:29:27,604 INFO L226 Difference]: Without dead ends: 208 [2022-01-11 00:29:27,605 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 00:29:27,605 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 107 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:27,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 378 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-11 00:29:27,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-01-11 00:29:27,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2022-01-11 00:29:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.5609756097560976) internal successors, (320), 205 states have internal predecessors, (320), 0 states have call successors, (0), 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 00:29:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2022-01-11 00:29:27,619 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 66 [2022-01-11 00:29:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:27,619 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2022-01-11 00:29:27,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 00:29:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2022-01-11 00:29:27,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:29:27,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:27,621 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] [2022-01-11 00:29:27,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:29:27,621 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash -534973050, now seen corresponding path program 1 times [2022-01-11 00:29:27,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:27,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456830027] [2022-01-11 00:29:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:27,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:27,745 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 00:29:27,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:27,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456830027] [2022-01-11 00:29:27,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456830027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:27,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:27,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:27,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046216119] [2022-01-11 00:29:27,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:27,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:27,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:27,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:27,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:27,747 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 00:29:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:27,821 INFO L93 Difference]: Finished difference Result 579 states and 893 transitions. [2022-01-11 00:29:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:27,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-11 00:29:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:27,822 INFO L225 Difference]: With dead ends: 579 [2022-01-11 00:29:27,823 INFO L226 Difference]: Without dead ends: 398 [2022-01-11 00:29:27,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:27,824 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 542 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:27,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 401 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:27,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-01-11 00:29:27,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 396. [2022-01-11 00:29:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.5443037974683544) internal successors, (610), 395 states have internal predecessors, (610), 0 states have call successors, (0), 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 00:29:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 610 transitions. [2022-01-11 00:29:27,839 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 610 transitions. Word has length 68 [2022-01-11 00:29:27,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:27,839 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 610 transitions. [2022-01-11 00:29:27,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 00:29:27,839 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 610 transitions. [2022-01-11 00:29:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:29:27,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:27,841 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] [2022-01-11 00:29:27,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:29:27,841 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:27,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:27,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1845891030, now seen corresponding path program 1 times [2022-01-11 00:29:27,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:27,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036499111] [2022-01-11 00:29:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:27,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:27,906 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 00:29:27,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:27,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036499111] [2022-01-11 00:29:27,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036499111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:27,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:27,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:27,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155655940] [2022-01-11 00:29:27,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:27,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:27,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:27,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:27,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:27,908 INFO L87 Difference]: Start difference. First operand 396 states and 610 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:27,930 INFO L93 Difference]: Finished difference Result 671 states and 1072 transitions. [2022-01-11 00:29:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 00:29:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:27,932 INFO L225 Difference]: With dead ends: 671 [2022-01-11 00:29:27,932 INFO L226 Difference]: Without dead ends: 519 [2022-01-11 00:29:27,932 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 00:29:27,933 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 116 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:27,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 480 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-01-11 00:29:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 517. [2022-01-11 00:29:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.571705426356589) internal successors, (811), 516 states have internal predecessors, (811), 0 states have call successors, (0), 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 00:29:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 811 transitions. [2022-01-11 00:29:27,949 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 811 transitions. Word has length 69 [2022-01-11 00:29:27,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:27,949 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 811 transitions. [2022-01-11 00:29:27,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:27,949 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 811 transitions. [2022-01-11 00:29:27,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:29:27,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:27,950 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] [2022-01-11 00:29:27,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:29:27,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:27,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:27,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1525756003, now seen corresponding path program 1 times [2022-01-11 00:29:27,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:27,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86515071] [2022-01-11 00:29:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:27,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,010 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 00:29:28,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86515071] [2022-01-11 00:29:28,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86515071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:28,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293744336] [2022-01-11 00:29:28,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:28,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:28,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:28,012 INFO L87 Difference]: Start difference. First operand 517 states and 811 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:28,041 INFO L93 Difference]: Finished difference Result 1056 states and 1710 transitions. [2022-01-11 00:29:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:28,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 00:29:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:28,043 INFO L225 Difference]: With dead ends: 1056 [2022-01-11 00:29:28,043 INFO L226 Difference]: Without dead ends: 657 [2022-01-11 00:29:28,044 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 00:29:28,045 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 121 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:28,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 409 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-01-11 00:29:28,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 645. [2022-01-11 00:29:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.5885093167701863) internal successors, (1023), 644 states have internal predecessors, (1023), 0 states have call successors, (0), 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 00:29:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1023 transitions. [2022-01-11 00:29:28,062 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1023 transitions. Word has length 69 [2022-01-11 00:29:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:28,062 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 1023 transitions. [2022-01-11 00:29:28,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1023 transitions. [2022-01-11 00:29:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:29:28,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:28,063 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] [2022-01-11 00:29:28,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:29:28,063 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:28,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2098637987, now seen corresponding path program 1 times [2022-01-11 00:29:28,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:28,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267765083] [2022-01-11 00:29:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:28,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,100 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 00:29:28,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267765083] [2022-01-11 00:29:28,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267765083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:28,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693348296] [2022-01-11 00:29:28,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:28,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:28,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:28,103 INFO L87 Difference]: Start difference. First operand 645 states and 1023 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:28,147 INFO L93 Difference]: Finished difference Result 1897 states and 3005 transitions. [2022-01-11 00:29:28,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:28,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 00:29:28,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:28,151 INFO L225 Difference]: With dead ends: 1897 [2022-01-11 00:29:28,151 INFO L226 Difference]: Without dead ends: 1280 [2022-01-11 00:29:28,152 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 00:29:28,153 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 200 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:28,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 610 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:28,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-01-11 00:29:28,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 647. [2022-01-11 00:29:28,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.5866873065015479) internal successors, (1025), 646 states have internal predecessors, (1025), 0 states have call successors, (0), 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 00:29:28,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1025 transitions. [2022-01-11 00:29:28,172 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1025 transitions. Word has length 69 [2022-01-11 00:29:28,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:28,173 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1025 transitions. [2022-01-11 00:29:28,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,173 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1025 transitions. [2022-01-11 00:29:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:29:28,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:28,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:28,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:29:28,174 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:28,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:28,174 INFO L85 PathProgramCache]: Analyzing trace with hash 106920449, now seen corresponding path program 1 times [2022-01-11 00:29:28,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:28,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659091858] [2022-01-11 00:29:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:28,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,253 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 00:29:28,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659091858] [2022-01-11 00:29:28,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659091858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:28,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102529785] [2022-01-11 00:29:28,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:28,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:28,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:28,255 INFO L87 Difference]: Start difference. First operand 647 states and 1025 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 00:29:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:28,322 INFO L93 Difference]: Finished difference Result 1832 states and 2895 transitions. [2022-01-11 00:29:28,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:28,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-11 00:29:28,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:28,326 INFO L225 Difference]: With dead ends: 1832 [2022-01-11 00:29:28,326 INFO L226 Difference]: Without dead ends: 1197 [2022-01-11 00:29:28,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:28,327 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 537 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:28,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 505 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-01-11 00:29:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1195. [2022-01-11 00:29:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 1.5661641541038527) internal successors, (1870), 1194 states have internal predecessors, (1870), 0 states have call successors, (0), 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 00:29:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1870 transitions. [2022-01-11 00:29:28,370 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1870 transitions. Word has length 70 [2022-01-11 00:29:28,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:28,370 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1870 transitions. [2022-01-11 00:29:28,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 00:29:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1870 transitions. [2022-01-11 00:29:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:29:28,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:28,371 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] [2022-01-11 00:29:28,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:29:28,372 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash -59292571, now seen corresponding path program 1 times [2022-01-11 00:29:28,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:28,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001768422] [2022-01-11 00:29:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:28,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,428 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 00:29:28,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001768422] [2022-01-11 00:29:28,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001768422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:28,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283735199] [2022-01-11 00:29:28,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:28,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:28,429 INFO L87 Difference]: Start difference. First operand 1195 states and 1870 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 00:29:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:28,476 INFO L93 Difference]: Finished difference Result 2133 states and 3336 transitions. [2022-01-11 00:29:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:28,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-11 00:29:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:28,480 INFO L225 Difference]: With dead ends: 2133 [2022-01-11 00:29:28,480 INFO L226 Difference]: Without dead ends: 954 [2022-01-11 00:29:28,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:28,481 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 69 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:28,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 668 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:28,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2022-01-11 00:29:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 954. [2022-01-11 00:29:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 1.5634837355718783) internal successors, (1490), 953 states have internal predecessors, (1490), 0 states have call successors, (0), 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 00:29:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1490 transitions. [2022-01-11 00:29:28,528 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1490 transitions. Word has length 70 [2022-01-11 00:29:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:28,528 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1490 transitions. [2022-01-11 00:29:28,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 00:29:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1490 transitions. [2022-01-11 00:29:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 00:29:28,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:28,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:28,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:29:28,529 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:28,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash 460531217, now seen corresponding path program 1 times [2022-01-11 00:29:28,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:28,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044167323] [2022-01-11 00:29:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:28,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,563 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 00:29:28,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044167323] [2022-01-11 00:29:28,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044167323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:28,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480745774] [2022-01-11 00:29:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:28,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:28,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:28,565 INFO L87 Difference]: Start difference. First operand 954 states and 1490 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:28,602 INFO L93 Difference]: Finished difference Result 1886 states and 2937 transitions. [2022-01-11 00:29:28,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:28,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 00:29:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:28,607 INFO L225 Difference]: With dead ends: 1886 [2022-01-11 00:29:28,607 INFO L226 Difference]: Without dead ends: 1261 [2022-01-11 00:29:28,608 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 00:29:28,608 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 197 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:28,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 421 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2022-01-11 00:29:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 954. [2022-01-11 00:29:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 1.5624344176285414) internal successors, (1489), 953 states have internal predecessors, (1489), 0 states have call successors, (0), 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 00:29:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1489 transitions. [2022-01-11 00:29:28,645 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1489 transitions. Word has length 72 [2022-01-11 00:29:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:28,645 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1489 transitions. [2022-01-11 00:29:28,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1489 transitions. [2022-01-11 00:29:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:29:28,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:28,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:28,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:29:28,647 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash 497562866, now seen corresponding path program 1 times [2022-01-11 00:29:28,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:28,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834374056] [2022-01-11 00:29:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:28,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,778 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 00:29:28,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834374056] [2022-01-11 00:29:28,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834374056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:28,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798189768] [2022-01-11 00:29:28,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:28,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:28,780 INFO L87 Difference]: Start difference. First operand 954 states and 1489 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:30,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:29:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:31,046 INFO L93 Difference]: Finished difference Result 2430 states and 3905 transitions. [2022-01-11 00:29:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:31,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:29:31,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:31,052 INFO L225 Difference]: With dead ends: 2430 [2022-01-11 00:29:31,052 INFO L226 Difference]: Without dead ends: 1646 [2022-01-11 00:29:31,055 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 00:29:31,055 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 106 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:31,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 391 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 00:29:31,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-01-11 00:29:31,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1644. [2022-01-11 00:29:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1643 states have (on average 1.5873402312842362) internal successors, (2608), 1643 states have internal predecessors, (2608), 0 states have call successors, (0), 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 00:29:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2608 transitions. [2022-01-11 00:29:31,156 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2608 transitions. Word has length 73 [2022-01-11 00:29:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:31,156 INFO L470 AbstractCegarLoop]: Abstraction has 1644 states and 2608 transitions. [2022-01-11 00:29:31,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2608 transitions. [2022-01-11 00:29:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 00:29:31,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:31,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:31,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:29:31,158 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:31,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1175527607, now seen corresponding path program 1 times [2022-01-11 00:29:31,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:31,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162508677] [2022-01-11 00:29:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:31,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:31,268 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 00:29:31,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:31,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162508677] [2022-01-11 00:29:31,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162508677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:31,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:31,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:31,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796036763] [2022-01-11 00:29:31,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:31,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:31,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:31,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:31,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:31,270 INFO L87 Difference]: Start difference. First operand 1644 states and 2608 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:31,562 INFO L93 Difference]: Finished difference Result 4781 states and 7578 transitions. [2022-01-11 00:29:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:31,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-11 00:29:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:31,585 INFO L225 Difference]: With dead ends: 4781 [2022-01-11 00:29:31,585 INFO L226 Difference]: Without dead ends: 3184 [2022-01-11 00:29:31,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:31,588 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 500 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:31,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 395 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:31,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2022-01-11 00:29:31,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 3182. [2022-01-11 00:29:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 3181 states have (on average 1.575290789060044) internal successors, (5011), 3181 states have internal predecessors, (5011), 0 states have call successors, (0), 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 00:29:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 5011 transitions. [2022-01-11 00:29:31,733 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 5011 transitions. Word has length 75 [2022-01-11 00:29:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:31,733 INFO L470 AbstractCegarLoop]: Abstraction has 3182 states and 5011 transitions. [2022-01-11 00:29:31,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 5011 transitions. [2022-01-11 00:29:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:31,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:31,735 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] [2022-01-11 00:29:31,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:29:31,735 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:31,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:31,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1983048574, now seen corresponding path program 1 times [2022-01-11 00:29:31,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:31,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306586840] [2022-01-11 00:29:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:31,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:31,799 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 00:29:31,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:31,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306586840] [2022-01-11 00:29:31,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306586840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:31,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:31,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:31,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441611311] [2022-01-11 00:29:31,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:31,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:31,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:31,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:31,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:31,800 INFO L87 Difference]: Start difference. First operand 3182 states and 5011 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 00:29:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:31,975 INFO L93 Difference]: Finished difference Result 7433 states and 11912 transitions. [2022-01-11 00:29:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:31,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-11 00:29:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:31,988 INFO L225 Difference]: With dead ends: 7433 [2022-01-11 00:29:31,988 INFO L226 Difference]: Without dead ends: 4565 [2022-01-11 00:29:31,992 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 00:29:31,993 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 112 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:31,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 407 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2022-01-11 00:29:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4451. [2022-01-11 00:29:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 4450 states have (on average 1.5757303370786517) internal successors, (7012), 4450 states have internal predecessors, (7012), 0 states have call successors, (0), 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 00:29:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 7012 transitions. [2022-01-11 00:29:32,201 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 7012 transitions. Word has length 76 [2022-01-11 00:29:32,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:32,201 INFO L470 AbstractCegarLoop]: Abstraction has 4451 states and 7012 transitions. [2022-01-11 00:29:32,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 00:29:32,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 7012 transitions. [2022-01-11 00:29:32,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:32,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:32,203 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] [2022-01-11 00:29:32,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:29:32,203 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:32,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:32,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1327053852, now seen corresponding path program 1 times [2022-01-11 00:29:32,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:32,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116701306] [2022-01-11 00:29:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:32,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:32,264 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 00:29:32,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:32,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116701306] [2022-01-11 00:29:32,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116701306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:32,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:32,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:32,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415692055] [2022-01-11 00:29:32,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:32,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:32,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:32,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:32,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:32,265 INFO L87 Difference]: Start difference. First operand 4451 states and 7012 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 00:29:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:32,584 INFO L93 Difference]: Finished difference Result 12120 states and 19204 transitions. [2022-01-11 00:29:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:32,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-11 00:29:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:32,608 INFO L225 Difference]: With dead ends: 12120 [2022-01-11 00:29:32,608 INFO L226 Difference]: Without dead ends: 7843 [2022-01-11 00:29:32,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:32,615 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 376 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:32,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 549 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:32,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7843 states. [2022-01-11 00:29:32,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7843 to 7841. [2022-01-11 00:29:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7841 states, 7840 states have (on average 1.563137755102041) internal successors, (12255), 7840 states have internal predecessors, (12255), 0 states have call successors, (0), 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 00:29:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 12255 transitions. [2022-01-11 00:29:33,018 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 12255 transitions. Word has length 76 [2022-01-11 00:29:33,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:33,018 INFO L470 AbstractCegarLoop]: Abstraction has 7841 states and 12255 transitions. [2022-01-11 00:29:33,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 00:29:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 12255 transitions. [2022-01-11 00:29:33,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:33,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:33,020 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] [2022-01-11 00:29:33,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:29:33,021 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:33,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash -372824957, now seen corresponding path program 1 times [2022-01-11 00:29:33,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:33,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709280971] [2022-01-11 00:29:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:33,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:33,057 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 00:29:33,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:33,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709280971] [2022-01-11 00:29:33,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709280971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:33,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:33,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:33,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748573994] [2022-01-11 00:29:33,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:33,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:33,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:33,059 INFO L87 Difference]: Start difference. First operand 7841 states and 12255 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 00:29:33,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:33,603 INFO L93 Difference]: Finished difference Result 23233 states and 36400 transitions. [2022-01-11 00:29:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:33,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-11 00:29:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:33,645 INFO L225 Difference]: With dead ends: 23233 [2022-01-11 00:29:33,645 INFO L226 Difference]: Without dead ends: 15546 [2022-01-11 00:29:33,655 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 00:29:33,656 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 186 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:33,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 590 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15546 states. [2022-01-11 00:29:34,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15546 to 7847. [2022-01-11 00:29:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7847 states, 7846 states have (on average 1.562707111904155) internal successors, (12261), 7846 states have internal predecessors, (12261), 0 states have call successors, (0), 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 00:29:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7847 states to 7847 states and 12261 transitions. [2022-01-11 00:29:34,095 INFO L78 Accepts]: Start accepts. Automaton has 7847 states and 12261 transitions. Word has length 76 [2022-01-11 00:29:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:34,096 INFO L470 AbstractCegarLoop]: Abstraction has 7847 states and 12261 transitions. [2022-01-11 00:29:34,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 00:29:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7847 states and 12261 transitions. [2022-01-11 00:29:34,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:34,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:34,098 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] [2022-01-11 00:29:34,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:29:34,099 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:34,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:34,099 INFO L85 PathProgramCache]: Analyzing trace with hash -970000305, now seen corresponding path program 1 times [2022-01-11 00:29:34,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:34,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335476847] [2022-01-11 00:29:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:34,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:34,160 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 00:29:34,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:34,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335476847] [2022-01-11 00:29:34,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335476847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:34,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:34,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:34,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925498251] [2022-01-11 00:29:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:34,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:34,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:34,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:34,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:34,161 INFO L87 Difference]: Start difference. First operand 7847 states and 12261 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 00:29:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:34,574 INFO L93 Difference]: Finished difference Result 15032 states and 23726 transitions. [2022-01-11 00:29:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:34,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-11 00:29:34,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:34,591 INFO L225 Difference]: With dead ends: 15032 [2022-01-11 00:29:34,591 INFO L226 Difference]: Without dead ends: 10189 [2022-01-11 00:29:34,596 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 00:29:34,596 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 107 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:34,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10189 states. [2022-01-11 00:29:34,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10189 to 10187. [2022-01-11 00:29:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10187 states, 10186 states have (on average 1.5647948164146868) internal successors, (15939), 10186 states have internal predecessors, (15939), 0 states have call successors, (0), 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 00:29:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10187 states to 10187 states and 15939 transitions. [2022-01-11 00:29:35,009 INFO L78 Accepts]: Start accepts. Automaton has 10187 states and 15939 transitions. Word has length 76 [2022-01-11 00:29:35,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:35,009 INFO L470 AbstractCegarLoop]: Abstraction has 10187 states and 15939 transitions. [2022-01-11 00:29:35,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 00:29:35,010 INFO L276 IsEmpty]: Start isEmpty. Operand 10187 states and 15939 transitions. [2022-01-11 00:29:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:35,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:35,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:35,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:29:35,011 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:35,012 INFO L85 PathProgramCache]: Analyzing trace with hash -696278929, now seen corresponding path program 1 times [2022-01-11 00:29:35,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:35,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004513923] [2022-01-11 00:29:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:35,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:35,080 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 00:29:35,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:35,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004513923] [2022-01-11 00:29:35,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004513923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:35,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:35,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:35,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607435675] [2022-01-11 00:29:35,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:35,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:35,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:35,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:35,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:35,082 INFO L87 Difference]: Start difference. First operand 10187 states and 15939 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:35,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:35,663 INFO L93 Difference]: Finished difference Result 22353 states and 34965 transitions. [2022-01-11 00:29:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:35,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 00:29:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:35,695 INFO L225 Difference]: With dead ends: 22353 [2022-01-11 00:29:35,696 INFO L226 Difference]: Without dead ends: 15698 [2022-01-11 00:29:35,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:35,705 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 492 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:35,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 476 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15698 states. [2022-01-11 00:29:36,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15698 to 10184. [2022-01-11 00:29:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10184 states, 10183 states have (on average 1.5645683983109104) internal successors, (15932), 10183 states have internal predecessors, (15932), 0 states have call successors, (0), 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 00:29:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10184 states to 10184 states and 15932 transitions. [2022-01-11 00:29:36,271 INFO L78 Accepts]: Start accepts. Automaton has 10184 states and 15932 transitions. Word has length 77 [2022-01-11 00:29:36,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:36,271 INFO L470 AbstractCegarLoop]: Abstraction has 10184 states and 15932 transitions. [2022-01-11 00:29:36,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:36,272 INFO L276 IsEmpty]: Start isEmpty. Operand 10184 states and 15932 transitions. [2022-01-11 00:29:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:36,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:36,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:36,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:29:36,277 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:36,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:36,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1553915253, now seen corresponding path program 1 times [2022-01-11 00:29:36,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:36,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638291216] [2022-01-11 00:29:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:36,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:36,340 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 00:29:36,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:36,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638291216] [2022-01-11 00:29:36,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638291216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:36,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:36,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:36,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220788850] [2022-01-11 00:29:36,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:36,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:36,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:36,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:36,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:36,342 INFO L87 Difference]: Start difference. First operand 10184 states and 15932 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:36,649 INFO L93 Difference]: Finished difference Result 15290 states and 23942 transitions. [2022-01-11 00:29:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:36,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 00:29:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:36,666 INFO L225 Difference]: With dead ends: 15290 [2022-01-11 00:29:36,666 INFO L226 Difference]: Without dead ends: 8630 [2022-01-11 00:29:36,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:36,676 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 47 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:36,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 646 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8630 states. [2022-01-11 00:29:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8630 to 8630. [2022-01-11 00:29:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8630 states, 8629 states have (on average 1.5619422876347202) internal successors, (13478), 8629 states have internal predecessors, (13478), 0 states have call successors, (0), 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 00:29:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8630 states to 8630 states and 13478 transitions. [2022-01-11 00:29:37,062 INFO L78 Accepts]: Start accepts. Automaton has 8630 states and 13478 transitions. Word has length 77 [2022-01-11 00:29:37,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:37,062 INFO L470 AbstractCegarLoop]: Abstraction has 8630 states and 13478 transitions. [2022-01-11 00:29:37,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 8630 states and 13478 transitions. [2022-01-11 00:29:37,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:37,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:37,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:37,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:29:37,063 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:37,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash 756461332, now seen corresponding path program 1 times [2022-01-11 00:29:37,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:37,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064204772] [2022-01-11 00:29:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:37,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:37,157 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 00:29:37,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:37,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064204772] [2022-01-11 00:29:37,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064204772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:37,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:37,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:37,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629399687] [2022-01-11 00:29:37,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:37,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:37,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:37,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:37,160 INFO L87 Difference]: Start difference. First operand 8630 states and 13478 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:37,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:37,605 INFO L93 Difference]: Finished difference Result 19175 states and 29882 transitions. [2022-01-11 00:29:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:29:37,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 00:29:37,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:37,631 INFO L225 Difference]: With dead ends: 19175 [2022-01-11 00:29:37,631 INFO L226 Difference]: Without dead ends: 12426 [2022-01-11 00:29:37,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:29:37,638 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 684 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:37,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 632 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12426 states. [2022-01-11 00:29:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12426 to 8840. [2022-01-11 00:29:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8840 states, 8839 states have (on average 1.5513067089037222) internal successors, (13712), 8839 states have internal predecessors, (13712), 0 states have call successors, (0), 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 00:29:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8840 states to 8840 states and 13712 transitions. [2022-01-11 00:29:37,982 INFO L78 Accepts]: Start accepts. Automaton has 8840 states and 13712 transitions. Word has length 77 [2022-01-11 00:29:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:37,982 INFO L470 AbstractCegarLoop]: Abstraction has 8840 states and 13712 transitions. [2022-01-11 00:29:37,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:37,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8840 states and 13712 transitions. [2022-01-11 00:29:37,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:37,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:37,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:37,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:29:37,984 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:37,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash -101174992, now seen corresponding path program 1 times [2022-01-11 00:29:37,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:37,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952596354] [2022-01-11 00:29:37,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:37,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:38,031 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 00:29:38,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:38,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952596354] [2022-01-11 00:29:38,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952596354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:38,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:38,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:38,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756373852] [2022-01-11 00:29:38,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:38,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:38,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:38,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:38,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:38,033 INFO L87 Difference]: Start difference. First operand 8840 states and 13712 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:38,392 INFO L93 Difference]: Finished difference Result 16271 states and 25222 transitions. [2022-01-11 00:29:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:38,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 00:29:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:38,405 INFO L225 Difference]: With dead ends: 16271 [2022-01-11 00:29:38,406 INFO L226 Difference]: Without dead ends: 7474 [2022-01-11 00:29:38,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:38,416 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 45 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:38,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 640 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:38,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2022-01-11 00:29:38,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 7474. [2022-01-11 00:29:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7474 states, 7473 states have (on average 1.5479727017262144) internal successors, (11568), 7473 states have internal predecessors, (11568), 0 states have call successors, (0), 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 00:29:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7474 states to 7474 states and 11568 transitions. [2022-01-11 00:29:38,784 INFO L78 Accepts]: Start accepts. Automaton has 7474 states and 11568 transitions. Word has length 77 [2022-01-11 00:29:38,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:38,784 INFO L470 AbstractCegarLoop]: Abstraction has 7474 states and 11568 transitions. [2022-01-11 00:29:38,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 7474 states and 11568 transitions. [2022-01-11 00:29:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 00:29:38,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:38,786 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] [2022-01-11 00:29:38,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:29:38,786 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:38,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1109974634, now seen corresponding path program 1 times [2022-01-11 00:29:38,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:38,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113452917] [2022-01-11 00:29:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:38,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:38,820 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 00:29:38,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:38,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113452917] [2022-01-11 00:29:38,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113452917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:38,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:38,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:38,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369924310] [2022-01-11 00:29:38,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:38,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:38,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:38,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:38,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:38,822 INFO L87 Difference]: Start difference. First operand 7474 states and 11568 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 00:29:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:39,244 INFO L93 Difference]: Finished difference Result 13954 states and 21600 transitions. [2022-01-11 00:29:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:39,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-11 00:29:39,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:39,261 INFO L225 Difference]: With dead ends: 13954 [2022-01-11 00:29:39,262 INFO L226 Difference]: Without dead ends: 10313 [2022-01-11 00:29:39,269 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 00:29:39,269 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 182 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:39,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 502 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10313 states. [2022-01-11 00:29:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10313 to 7474. [2022-01-11 00:29:39,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7474 states, 7473 states have (on average 1.5477050715910612) internal successors, (11566), 7473 states have internal predecessors, (11566), 0 states have call successors, (0), 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 00:29:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7474 states to 7474 states and 11566 transitions. [2022-01-11 00:29:39,616 INFO L78 Accepts]: Start accepts. Automaton has 7474 states and 11566 transitions. Word has length 79 [2022-01-11 00:29:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:39,616 INFO L470 AbstractCegarLoop]: Abstraction has 7474 states and 11566 transitions. [2022-01-11 00:29:39,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 00:29:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 7474 states and 11566 transitions. [2022-01-11 00:29:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:29:39,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:39,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:29:39,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:29:39,618 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:39,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash -776018099, now seen corresponding path program 1 times [2022-01-11 00:29:39,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:39,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538383421] [2022-01-11 00:29:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:39,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:39,788 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 00:29:39,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:39,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538383421] [2022-01-11 00:29:39,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538383421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:39,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:39,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:39,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139687368] [2022-01-11 00:29:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:39,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:39,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:39,790 INFO L87 Difference]: Start difference. First operand 7474 states and 11566 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:40,364 INFO L93 Difference]: Finished difference Result 20502 states and 32144 transitions. [2022-01-11 00:29:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:40,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 00:29:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:40,388 INFO L225 Difference]: With dead ends: 20502 [2022-01-11 00:29:40,388 INFO L226 Difference]: Without dead ends: 13508 [2022-01-11 00:29:40,398 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 00:29:40,399 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 97 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:40,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 371 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13508 states. [2022-01-11 00:29:41,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13508 to 13506. [2022-01-11 00:29:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13506 states, 13505 states have (on average 1.554239170677527) internal successors, (20990), 13505 states have internal predecessors, (20990), 0 states have call successors, (0), 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 00:29:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13506 states to 13506 states and 20990 transitions. [2022-01-11 00:29:41,086 INFO L78 Accepts]: Start accepts. Automaton has 13506 states and 20990 transitions. Word has length 80 [2022-01-11 00:29:41,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:41,086 INFO L470 AbstractCegarLoop]: Abstraction has 13506 states and 20990 transitions. [2022-01-11 00:29:41,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:29:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 13506 states and 20990 transitions. [2022-01-11 00:29:41,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:29:41,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:41,088 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] [2022-01-11 00:29:41,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:29:41,088 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:41,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash 644647588, now seen corresponding path program 1 times [2022-01-11 00:29:41,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:41,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735668858] [2022-01-11 00:29:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:41,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:41,143 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 00:29:41,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:41,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735668858] [2022-01-11 00:29:41,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735668858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:41,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:41,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:41,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225707436] [2022-01-11 00:29:41,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:41,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:41,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:41,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:41,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:41,144 INFO L87 Difference]: Start difference. First operand 13506 states and 20990 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 00:29:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:42,060 INFO L93 Difference]: Finished difference Result 34383 states and 53582 transitions. [2022-01-11 00:29:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:42,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-11 00:29:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:42,207 INFO L225 Difference]: With dead ends: 34383 [2022-01-11 00:29:42,208 INFO L226 Difference]: Without dead ends: 21357 [2022-01-11 00:29:42,228 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 00:29:42,228 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 120 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:42,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 533 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21357 states. [2022-01-11 00:29:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21357 to 21355. [2022-01-11 00:29:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21355 states, 21354 states have (on average 1.536573943991758) internal successors, (32812), 21354 states have internal predecessors, (32812), 0 states have call successors, (0), 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 00:29:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21355 states to 21355 states and 32812 transitions. [2022-01-11 00:29:43,275 INFO L78 Accepts]: Start accepts. Automaton has 21355 states and 32812 transitions. Word has length 82 [2022-01-11 00:29:43,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:43,275 INFO L470 AbstractCegarLoop]: Abstraction has 21355 states and 32812 transitions. [2022-01-11 00:29:43,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 00:29:43,276 INFO L276 IsEmpty]: Start isEmpty. Operand 21355 states and 32812 transitions. [2022-01-11 00:29:43,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:29:43,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:43,278 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] [2022-01-11 00:29:43,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:29:43,279 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:43,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:43,280 INFO L85 PathProgramCache]: Analyzing trace with hash -675072808, now seen corresponding path program 1 times [2022-01-11 00:29:43,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:43,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551179784] [2022-01-11 00:29:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:43,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:43,333 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 00:29:43,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:43,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551179784] [2022-01-11 00:29:43,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551179784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:43,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:43,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:43,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622649191] [2022-01-11 00:29:43,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:43,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:43,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:43,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:43,335 INFO L87 Difference]: Start difference. First operand 21355 states and 32812 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 00:29:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:45,059 INFO L93 Difference]: Finished difference Result 54339 states and 83618 transitions. [2022-01-11 00:29:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:45,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-11 00:29:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:45,112 INFO L225 Difference]: With dead ends: 54339 [2022-01-11 00:29:45,112 INFO L226 Difference]: Without dead ends: 33617 [2022-01-11 00:29:45,128 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 00:29:45,128 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 123 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:45,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 558 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33617 states. [2022-01-11 00:29:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33617 to 33615. [2022-01-11 00:29:46,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33615 states, 33614 states have (on average 1.5169869697149998) internal successors, (50992), 33614 states have internal predecessors, (50992), 0 states have call successors, (0), 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 00:29:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33615 states to 33615 states and 50992 transitions. [2022-01-11 00:29:46,936 INFO L78 Accepts]: Start accepts. Automaton has 33615 states and 50992 transitions. Word has length 82 [2022-01-11 00:29:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:46,936 INFO L470 AbstractCegarLoop]: Abstraction has 33615 states and 50992 transitions. [2022-01-11 00:29:46,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 00:29:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 33615 states and 50992 transitions. [2022-01-11 00:29:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:29:46,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:46,939 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] [2022-01-11 00:29:46,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:29:46,939 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:46,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:46,940 INFO L85 PathProgramCache]: Analyzing trace with hash -903834258, now seen corresponding path program 1 times [2022-01-11 00:29:46,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:46,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174796179] [2022-01-11 00:29:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:46,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:47,033 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 00:29:47,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:47,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174796179] [2022-01-11 00:29:47,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174796179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:47,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:47,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:47,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926762906] [2022-01-11 00:29:47,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:47,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:47,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:47,035 INFO L87 Difference]: Start difference. First operand 33615 states and 50992 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 00:29:49,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:49,121 INFO L93 Difference]: Finished difference Result 60506 states and 91759 transitions. [2022-01-11 00:29:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:49,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 00:29:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:49,169 INFO L225 Difference]: With dead ends: 60506 [2022-01-11 00:29:49,170 INFO L226 Difference]: Without dead ends: 35544 [2022-01-11 00:29:49,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:49,187 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 472 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:49,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 381 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:49,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35544 states. [2022-01-11 00:29:51,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35544 to 33684. [2022-01-11 00:29:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33684 states, 33683 states have (on average 1.516195113261883) internal successors, (51070), 33683 states have internal predecessors, (51070), 0 states have call successors, (0), 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 00:29:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33684 states to 33684 states and 51070 transitions. [2022-01-11 00:29:51,230 INFO L78 Accepts]: Start accepts. Automaton has 33684 states and 51070 transitions. Word has length 83 [2022-01-11 00:29:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:51,230 INFO L470 AbstractCegarLoop]: Abstraction has 33684 states and 51070 transitions. [2022-01-11 00:29:51,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 00:29:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 33684 states and 51070 transitions. [2022-01-11 00:29:51,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:29:51,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:51,233 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] [2022-01-11 00:29:51,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:29:51,234 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash 244349705, now seen corresponding path program 1 times [2022-01-11 00:29:51,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:51,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762699463] [2022-01-11 00:29:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:51,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:51,293 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 00:29:51,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:51,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762699463] [2022-01-11 00:29:51,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762699463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:51,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:51,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:51,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621838679] [2022-01-11 00:29:51,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:51,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:51,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:51,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:51,295 INFO L87 Difference]: Start difference. First operand 33684 states and 51070 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 00:29:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:53,807 INFO L93 Difference]: Finished difference Result 75896 states and 115520 transitions. [2022-01-11 00:29:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:53,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 00:29:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:53,874 INFO L225 Difference]: With dead ends: 75896 [2022-01-11 00:29:53,874 INFO L226 Difference]: Without dead ends: 47478 [2022-01-11 00:29:53,893 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 00:29:53,893 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 103 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:53,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 406 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47478 states. [2022-01-11 00:29:56,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47478 to 45988. [2022-01-11 00:29:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45988 states, 45987 states have (on average 1.504033748668102) internal successors, (69166), 45987 states have internal predecessors, (69166), 0 states have call successors, (0), 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 00:29:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45988 states to 45988 states and 69166 transitions. [2022-01-11 00:29:56,620 INFO L78 Accepts]: Start accepts. Automaton has 45988 states and 69166 transitions. Word has length 83 [2022-01-11 00:29:56,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:56,621 INFO L470 AbstractCegarLoop]: Abstraction has 45988 states and 69166 transitions. [2022-01-11 00:29:56,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 00:29:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 45988 states and 69166 transitions. [2022-01-11 00:29:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 00:29:56,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:56,624 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] [2022-01-11 00:29:56,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:29:56,624 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash 504265995, now seen corresponding path program 1 times [2022-01-11 00:29:56,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:56,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498369434] [2022-01-11 00:29:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:56,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:56,660 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 00:29:56,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:56,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498369434] [2022-01-11 00:29:56,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498369434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:56,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:56,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:56,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025648379] [2022-01-11 00:29:56,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:56,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:56,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:56,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:56,662 INFO L87 Difference]: Start difference. First operand 45988 states and 69166 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 00:30:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:01,508 INFO L93 Difference]: Finished difference Result 137254 states and 206672 transitions. [2022-01-11 00:30:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:01,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-11 00:30:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:01,645 INFO L225 Difference]: With dead ends: 137254 [2022-01-11 00:30:01,646 INFO L226 Difference]: Without dead ends: 91757 [2022-01-11 00:30:01,680 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 00:30:01,681 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 172 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:01,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 566 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91757 states. [2022-01-11 00:30:04,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91757 to 46004. [2022-01-11 00:30:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46004 states, 46003 states have (on average 1.5038584440145208) internal successors, (69182), 46003 states have internal predecessors, (69182), 0 states have call successors, (0), 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 00:30:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46004 states to 46004 states and 69182 transitions. [2022-01-11 00:30:04,902 INFO L78 Accepts]: Start accepts. Automaton has 46004 states and 69182 transitions. Word has length 84 [2022-01-11 00:30:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:04,903 INFO L470 AbstractCegarLoop]: Abstraction has 46004 states and 69182 transitions. [2022-01-11 00:30:04,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 00:30:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 46004 states and 69182 transitions. [2022-01-11 00:30:04,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 00:30:04,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:04,905 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] [2022-01-11 00:30:04,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 00:30:04,906 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:04,906 INFO L85 PathProgramCache]: Analyzing trace with hash 929627703, now seen corresponding path program 1 times [2022-01-11 00:30:04,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:04,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053347620] [2022-01-11 00:30:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:04,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:04,978 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 00:30:04,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:04,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053347620] [2022-01-11 00:30:04,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053347620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:04,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:04,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:04,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998511453] [2022-01-11 00:30:04,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:04,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:04,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:04,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:04,980 INFO L87 Difference]: Start difference. First operand 46004 states and 69182 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 00:30:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:08,396 INFO L93 Difference]: Finished difference Result 88690 states and 134336 transitions. [2022-01-11 00:30:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-11 00:30:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:08,498 INFO L225 Difference]: With dead ends: 88690 [2022-01-11 00:30:08,499 INFO L226 Difference]: Without dead ends: 58744 [2022-01-11 00:30:08,521 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 00:30:08,522 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 98 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:08,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 442 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58744 states. [2022-01-11 00:30:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58744 to 58742. [2022-01-11 00:30:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58742 states, 58741 states have (on average 1.5038899576105276) internal successors, (88340), 58741 states have internal predecessors, (88340), 0 states have call successors, (0), 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 00:30:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58742 states to 58742 states and 88340 transitions. [2022-01-11 00:30:12,048 INFO L78 Accepts]: Start accepts. Automaton has 58742 states and 88340 transitions. Word has length 84 [2022-01-11 00:30:12,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:12,048 INFO L470 AbstractCegarLoop]: Abstraction has 58742 states and 88340 transitions. [2022-01-11 00:30:12,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 00:30:12,048 INFO L276 IsEmpty]: Start isEmpty. Operand 58742 states and 88340 transitions. [2022-01-11 00:30:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:30:12,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:12,052 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] [2022-01-11 00:30:12,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 00:30:12,052 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -322225901, now seen corresponding path program 1 times [2022-01-11 00:30:12,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:12,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860225726] [2022-01-11 00:30:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:12,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:12,164 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 00:30:12,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:12,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860225726] [2022-01-11 00:30:12,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860225726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:12,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:12,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:30:12,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333102634] [2022-01-11 00:30:12,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:12,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:30:12,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:12,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:30:12,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:30:12,165 INFO L87 Difference]: Start difference. First operand 58742 states and 88340 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 00:30:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:15,841 INFO L93 Difference]: Finished difference Result 117761 states and 176960 transitions. [2022-01-11 00:30:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:30:15,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 00:30:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:15,959 INFO L225 Difference]: With dead ends: 117761 [2022-01-11 00:30:15,960 INFO L226 Difference]: Without dead ends: 59127 [2022-01-11 00:30:16,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:30:16,001 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 358 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:16,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 649 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59127 states. [2022-01-11 00:30:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59127 to 58985. [2022-01-11 00:30:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58985 states, 58984 states have (on average 1.5016953750169537) internal successors, (88576), 58984 states have internal predecessors, (88576), 0 states have call successors, (0), 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 00:30:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58985 states to 58985 states and 88576 transitions. [2022-01-11 00:30:19,866 INFO L78 Accepts]: Start accepts. Automaton has 58985 states and 88576 transitions. Word has length 85 [2022-01-11 00:30:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:19,866 INFO L470 AbstractCegarLoop]: Abstraction has 58985 states and 88576 transitions. [2022-01-11 00:30:19,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 00:30:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 58985 states and 88576 transitions. [2022-01-11 00:30:19,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:30:19,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:19,868 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] [2022-01-11 00:30:19,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 00:30:19,868 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:19,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1968812753, now seen corresponding path program 1 times [2022-01-11 00:30:19,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:19,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221122909] [2022-01-11 00:30:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:19,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:19,932 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 00:30:19,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:19,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221122909] [2022-01-11 00:30:19,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221122909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:19,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:19,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:30:19,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739288561] [2022-01-11 00:30:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:19,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:30:19,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:30:19,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:30:19,933 INFO L87 Difference]: Start difference. First operand 58985 states and 88576 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 00:30:23,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:23,092 INFO L93 Difference]: Finished difference Result 102620 states and 154090 transitions. [2022-01-11 00:30:23,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:30:23,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 00:30:23,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:23,187 INFO L225 Difference]: With dead ends: 102620 [2022-01-11 00:30:23,187 INFO L226 Difference]: Without dead ends: 52607 [2022-01-11 00:30:23,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:30:23,217 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 23 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:23,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 616 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52607 states. [2022-01-11 00:30:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52607 to 52607. [2022-01-11 00:30:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52607 states, 52606 states have (on average 1.5000380184769797) internal successors, (78911), 52606 states have internal predecessors, (78911), 0 states have call successors, (0), 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 00:30:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52607 states to 52607 states and 78911 transitions. [2022-01-11 00:30:26,672 INFO L78 Accepts]: Start accepts. Automaton has 52607 states and 78911 transitions. Word has length 85 [2022-01-11 00:30:26,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:26,672 INFO L470 AbstractCegarLoop]: Abstraction has 52607 states and 78911 transitions. [2022-01-11 00:30:26,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 00:30:26,672 INFO L276 IsEmpty]: Start isEmpty. Operand 52607 states and 78911 transitions. [2022-01-11 00:30:26,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 00:30:26,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:26,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:30:26,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 00:30:26,674 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:26,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash 70618535, now seen corresponding path program 1 times [2022-01-11 00:30:26,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:26,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559018082] [2022-01-11 00:30:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:26,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:26,707 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 00:30:26,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:26,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559018082] [2022-01-11 00:30:26,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559018082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:26,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:26,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:26,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718497795] [2022-01-11 00:30:26,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:26,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:26,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:26,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:26,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:26,708 INFO L87 Difference]: Start difference. First operand 52607 states and 78911 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)