/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/eca-rers2012/Problem04_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:55:53,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:55:53,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:55:53,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 21:55:53,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:55:53,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:55:53,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:55:53,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:55:53,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:55:53,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:55:53,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:55:53,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:55:53,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:55:53,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:55:53,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:55:53,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:55:53,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 21:55:53,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:55:53,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:55:53,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:55:53,770 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 [2022-01-10 21:55:53,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:55:53,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:55:53,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:55:53,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:55:53,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:55:53,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:55:53,805 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:55:53,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:55:53,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:55:53,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:55:53,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:55:53,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:55:53,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:55:53,807 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:55:53,807 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:55:53,807 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:55:53,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:55:53,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:55:53,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:55:53,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:55:53,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:55:53,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:55:53,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:55:53,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:55:53,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:55:53,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:55:53,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:55:53,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:55:53,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:55:53,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:55:53,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:55:53,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:55:53,811 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:55:53,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:55:54,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:55:54,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:55:54,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:55:54,062 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:55:54,062 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:55:54,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label42.c [2022-01-10 21:55:54,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/769679ed9/3bfe477692a848b18192e507d8f39cf1/FLAG84a8b24d5 [2022-01-10 21:55:54,798 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:55:54,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label42.c [2022-01-10 21:55:54,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/769679ed9/3bfe477692a848b18192e507d8f39cf1/FLAG84a8b24d5 [2022-01-10 21:55:55,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/769679ed9/3bfe477692a848b18192e507d8f39cf1 [2022-01-10 21:55:55,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:55:55,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:55:55,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:55:55,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:55:55,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:55:55,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:55:55" (1/1) ... [2022-01-10 21:55:55,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100346c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:55, skipping insertion in model container [2022-01-10 21:55:55,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:55:55" (1/1) ... [2022-01-10 21:55:55,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:55:55,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:55:56,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label42.c[184279,184292] [2022-01-10 21:55:56,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:55:56,220 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:55:56,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label42.c[184279,184292] [2022-01-10 21:55:56,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:55:56,664 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:55:56,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56 WrapperNode [2022-01-10 21:55:56,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:55:56,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:55:56,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:55:56,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:55:56,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (1/1) ... [2022-01-10 21:55:56,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (1/1) ... [2022-01-10 21:55:56,870 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5567 [2022-01-10 21:55:56,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:55:56,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:55:56,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:55:56,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:55:56,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (1/1) ... [2022-01-10 21:55:56,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (1/1) ... [2022-01-10 21:55:56,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (1/1) ... [2022-01-10 21:55:56,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (1/1) ... [2022-01-10 21:55:56,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (1/1) ... [2022-01-10 21:55:57,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (1/1) ... [2022-01-10 21:55:57,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (1/1) ... [2022-01-10 21:55:57,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:55:57,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:55:57,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:55:57,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:55:57,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (1/1) ... [2022-01-10 21:55:57,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:55:57,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:55:57,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 21:55:57,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 21:55:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:55:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:55:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:55:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:55:57,213 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:55:57,215 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:56:01,380 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:56:01,400 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:56:01,400 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 21:56:01,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:56:01 BoogieIcfgContainer [2022-01-10 21:56:01,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:56:01,403 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:56:01,403 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:56:01,404 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:56:01,406 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:56:01" (1/1) ... [2022-01-10 21:56:02,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:56:02 BasicIcfg [2022-01-10 21:56:02,274 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:56:02,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:56:02,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:56:02,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:56:02,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:55:55" (1/4) ... [2022-01-10 21:56:02,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a7d988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:56:02, skipping insertion in model container [2022-01-10 21:56:02,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:55:56" (2/4) ... [2022-01-10 21:56:02,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a7d988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:56:02, skipping insertion in model container [2022-01-10 21:56:02,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:56:01" (3/4) ... [2022-01-10 21:56:02,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a7d988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:56:02, skipping insertion in model container [2022-01-10 21:56:02,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:56:02" (4/4) ... [2022-01-10 21:56:02,280 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label42.cTransformedIcfg [2022-01-10 21:56:02,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:56:02,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 21:56:02,321 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:56:02,326 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 21:56:02,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 21:56:02,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:02,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2022-01-10 21:56:02,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:56:02,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:56:02,397 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:56:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:56:02,402 INFO L85 PathProgramCache]: Analyzing trace with hash 365575088, now seen corresponding path program 1 times [2022-01-10 21:56:02,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:56:02,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447273074] [2022-01-10 21:56:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:56:02,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:56:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:56:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:56:04,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:56:04,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447273074] [2022-01-10 21:56:04,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447273074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:56:04,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:56:04,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:56:04,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821928196] [2022-01-10 21:56:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:56:04,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:56:04,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:56:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:56:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:04,059 INFO L87 Difference]: Start difference. First operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 271.3333333333333) internal successors, (814), 2 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:56:08,204 INFO L93 Difference]: Finished difference Result 2589 states and 5028 transitions. [2022-01-10 21:56:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:56:08,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 271.3333333333333) internal successors, (814), 2 states have internal predecessors, (814), 0 states have call successors, (0), 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 814 [2022-01-10 21:56:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:56:08,233 INFO L225 Difference]: With dead ends: 2589 [2022-01-10 21:56:08,233 INFO L226 Difference]: Without dead ends: 1640 [2022-01-10 21:56:08,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:08,243 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 237 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 1137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1137 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:56:08,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 516 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1137 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-01-10 21:56:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2022-01-10 21:56:08,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2022-01-10 21:56:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1639 states have (on average 1.6375838926174497) internal successors, (2684), 1639 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2684 transitions. [2022-01-10 21:56:08,355 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2684 transitions. Word has length 814 [2022-01-10 21:56:08,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:56:08,358 INFO L470 AbstractCegarLoop]: Abstraction has 1640 states and 2684 transitions. [2022-01-10 21:56:08,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.3333333333333) internal successors, (814), 2 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2684 transitions. [2022-01-10 21:56:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2022-01-10 21:56:08,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:56:08,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:56:08,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:56:08,381 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:56:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:56:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2121992090, now seen corresponding path program 1 times [2022-01-10 21:56:08,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:56:08,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004477605] [2022-01-10 21:56:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:56:08,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:56:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:56:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:56:08,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:56:08,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004477605] [2022-01-10 21:56:08,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004477605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:56:08,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:56:08,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:56:08,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071310379] [2022-01-10 21:56:08,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:56:08,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:56:08,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:56:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:56:08,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:08,779 INFO L87 Difference]: Start difference. First operand 1640 states and 2684 transitions. Second operand has 3 states, 3 states have (on average 275.0) internal successors, (825), 2 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:12,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:56:12,722 INFO L93 Difference]: Finished difference Result 4914 states and 8047 transitions. [2022-01-10 21:56:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:56:12,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 275.0) internal successors, (825), 2 states have internal predecessors, (825), 0 states have call successors, (0), 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 825 [2022-01-10 21:56:12,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:56:12,736 INFO L225 Difference]: With dead ends: 4914 [2022-01-10 21:56:12,736 INFO L226 Difference]: Without dead ends: 3276 [2022-01-10 21:56:12,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:12,741 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 989 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-10 21:56:12,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 241 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-10 21:56:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2022-01-10 21:56:12,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3276. [2022-01-10 21:56:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 3275 states have (on average 1.5410687022900764) internal successors, (5047), 3275 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 5047 transitions. [2022-01-10 21:56:12,816 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 5047 transitions. Word has length 825 [2022-01-10 21:56:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:56:12,817 INFO L470 AbstractCegarLoop]: Abstraction has 3276 states and 5047 transitions. [2022-01-10 21:56:12,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.0) internal successors, (825), 2 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 5047 transitions. [2022-01-10 21:56:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2022-01-10 21:56:12,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:56:12,831 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:56:12,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 21:56:12,831 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:56:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:56:12,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1483507641, now seen corresponding path program 1 times [2022-01-10 21:56:12,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:56:12,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982318070] [2022-01-10 21:56:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:56:12,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:56:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:56:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 21:56:13,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:56:13,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982318070] [2022-01-10 21:56:13,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982318070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:56:13,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:56:13,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:56:13,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761176696] [2022-01-10 21:56:13,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:56:13,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:56:13,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:56:13,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:56:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:13,277 INFO L87 Difference]: Start difference. First operand 3276 states and 5047 transitions. Second operand has 3 states, 3 states have (on average 279.3333333333333) internal successors, (838), 2 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:56:16,884 INFO L93 Difference]: Finished difference Result 9822 states and 15136 transitions. [2022-01-10 21:56:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:56:16,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 279.3333333333333) internal successors, (838), 2 states have internal predecessors, (838), 0 states have call successors, (0), 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 847 [2022-01-10 21:56:16,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:56:16,908 INFO L225 Difference]: With dead ends: 9822 [2022-01-10 21:56:16,908 INFO L226 Difference]: Without dead ends: 6548 [2022-01-10 21:56:16,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:16,915 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 1072 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-10 21:56:16,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 473 Invalid, 3128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-10 21:56:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2022-01-10 21:56:17,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6548. [2022-01-10 21:56:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6548 states, 6547 states have (on average 1.381854284405071) internal successors, (9047), 6547 states have internal predecessors, (9047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6548 states to 6548 states and 9047 transitions. [2022-01-10 21:56:17,028 INFO L78 Accepts]: Start accepts. Automaton has 6548 states and 9047 transitions. Word has length 847 [2022-01-10 21:56:17,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:56:17,029 INFO L470 AbstractCegarLoop]: Abstraction has 6548 states and 9047 transitions. [2022-01-10 21:56:17,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.3333333333333) internal successors, (838), 2 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:17,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6548 states and 9047 transitions. [2022-01-10 21:56:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2022-01-10 21:56:17,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:56:17,047 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:56:17,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 21:56:17,047 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:56:17,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:56:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1815347584, now seen corresponding path program 1 times [2022-01-10 21:56:17,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:56:17,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469042455] [2022-01-10 21:56:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:56:17,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:56:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:56:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:56:17,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:56:17,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469042455] [2022-01-10 21:56:17,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469042455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:56:17,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:56:17,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:56:17,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339148007] [2022-01-10 21:56:17,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:56:17,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:56:17,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:56:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:56:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:56:17,467 INFO L87 Difference]: Start difference. First operand 6548 states and 9047 transitions. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:56:20,741 INFO L93 Difference]: Finished difference Result 13941 states and 19029 transitions. [2022-01-10 21:56:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 21:56:20,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 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 883 [2022-01-10 21:56:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:56:20,768 INFO L225 Difference]: With dead ends: 13941 [2022-01-10 21:56:20,768 INFO L226 Difference]: Without dead ends: 7395 [2022-01-10 21:56:20,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:56:20,778 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 1557 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:56:20,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 1912 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 21:56:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7395 states. [2022-01-10 21:56:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7395 to 7366. [2022-01-10 21:56:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7366 states, 7365 states have (on average 1.3402579769178546) internal successors, (9871), 7365 states have internal predecessors, (9871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7366 states to 7366 states and 9871 transitions. [2022-01-10 21:56:20,923 INFO L78 Accepts]: Start accepts. Automaton has 7366 states and 9871 transitions. Word has length 883 [2022-01-10 21:56:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:56:20,923 INFO L470 AbstractCegarLoop]: Abstraction has 7366 states and 9871 transitions. [2022-01-10 21:56:20,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7366 states and 9871 transitions. [2022-01-10 21:56:20,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2022-01-10 21:56:20,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:56:20,943 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:56:20,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 21:56:20,943 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:56:20,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:56:20,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1708373786, now seen corresponding path program 1 times [2022-01-10 21:56:20,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:56:20,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533744859] [2022-01-10 21:56:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:56:20,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:56:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:56:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:56:21,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:56:21,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533744859] [2022-01-10 21:56:21,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533744859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:56:21,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:56:21,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:56:21,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273143715] [2022-01-10 21:56:21,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:56:21,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:56:21,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:56:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:56:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:21,336 INFO L87 Difference]: Start difference. First operand 7366 states and 9871 transitions. Second operand has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:56:24,866 INFO L93 Difference]: Finished difference Result 20456 states and 27960 transitions. [2022-01-10 21:56:24,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:56:24,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 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 898 [2022-01-10 21:56:24,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:56:24,910 INFO L225 Difference]: With dead ends: 20456 [2022-01-10 21:56:24,910 INFO L226 Difference]: Without dead ends: 13910 [2022-01-10 21:56:24,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:24,921 INFO L933 BasicCegarLoop]: 1426 mSDtfsCounter, 763 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-10 21:56:24,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 1435 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [940 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-01-10 21:56:24,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13910 states. [2022-01-10 21:56:25,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13910 to 13910. [2022-01-10 21:56:25,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13910 states, 13909 states have (on average 1.3052699690847653) internal successors, (18155), 13909 states have internal predecessors, (18155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:25,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13910 states to 13910 states and 18155 transitions. [2022-01-10 21:56:25,129 INFO L78 Accepts]: Start accepts. Automaton has 13910 states and 18155 transitions. Word has length 898 [2022-01-10 21:56:25,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:56:25,129 INFO L470 AbstractCegarLoop]: Abstraction has 13910 states and 18155 transitions. [2022-01-10 21:56:25,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand 13910 states and 18155 transitions. [2022-01-10 21:56:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2022-01-10 21:56:25,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:56:25,168 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:56:25,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 21:56:25,168 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:56:25,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:56:25,169 INFO L85 PathProgramCache]: Analyzing trace with hash -29687002, now seen corresponding path program 1 times [2022-01-10 21:56:25,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:56:25,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674966982] [2022-01-10 21:56:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:56:25,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:56:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:56:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 21:56:25,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:56:25,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674966982] [2022-01-10 21:56:25,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674966982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:56:25,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:56:25,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:56:25,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775441621] [2022-01-10 21:56:25,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:56:25,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:56:25,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:56:25,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:56:25,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:25,567 INFO L87 Difference]: Start difference. First operand 13910 states and 18155 transitions. Second operand has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 2 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:56:29,015 INFO L93 Difference]: Finished difference Result 40088 states and 52812 transitions. [2022-01-10 21:56:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:56:29,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 2 states have internal predecessors, (886), 0 states have call successors, (0), 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 906 [2022-01-10 21:56:29,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:56:29,069 INFO L225 Difference]: With dead ends: 40088 [2022-01-10 21:56:29,069 INFO L226 Difference]: Without dead ends: 26998 [2022-01-10 21:56:29,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:29,088 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 845 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 21:56:29,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 469 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-10 21:56:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26998 states. [2022-01-10 21:56:29,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26998 to 26180. [2022-01-10 21:56:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26180 states, 26179 states have (on average 1.2861071851484014) internal successors, (33669), 26179 states have internal predecessors, (33669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26180 states to 26180 states and 33669 transitions. [2022-01-10 21:56:29,438 INFO L78 Accepts]: Start accepts. Automaton has 26180 states and 33669 transitions. Word has length 906 [2022-01-10 21:56:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:56:29,439 INFO L470 AbstractCegarLoop]: Abstraction has 26180 states and 33669 transitions. [2022-01-10 21:56:29,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 2 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 26180 states and 33669 transitions. [2022-01-10 21:56:29,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2022-01-10 21:56:29,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:56:29,474 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:56:29,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 21:56:29,474 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:56:29,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:56:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1965742118, now seen corresponding path program 1 times [2022-01-10 21:56:29,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:56:29,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963197896] [2022-01-10 21:56:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:56:29,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:56:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:56:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 21:56:30,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:56:30,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963197896] [2022-01-10 21:56:30,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963197896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:56:30,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:56:30,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:56:30,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554394134] [2022-01-10 21:56:30,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:56:30,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:56:30,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:56:30,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:56:30,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:30,427 INFO L87 Difference]: Start difference. First operand 26180 states and 33669 transitions. Second operand has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:33,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:56:33,775 INFO L93 Difference]: Finished difference Result 62992 states and 81010 transitions. [2022-01-10 21:56:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:56:33,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 950 [2022-01-10 21:56:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:56:33,828 INFO L225 Difference]: With dead ends: 62992 [2022-01-10 21:56:33,828 INFO L226 Difference]: Without dead ends: 37632 [2022-01-10 21:56:33,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:33,856 INFO L933 BasicCegarLoop]: 1500 mSDtfsCounter, 55 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:56:33,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1509 Invalid, 2999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [880 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 21:56:33,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37632 states. [2022-01-10 21:56:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37632 to 37632. [2022-01-10 21:56:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37632 states, 37631 states have (on average 1.2406526533974649) internal successors, (46687), 37631 states have internal predecessors, (46687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37632 states to 37632 states and 46687 transitions. [2022-01-10 21:56:34,315 INFO L78 Accepts]: Start accepts. Automaton has 37632 states and 46687 transitions. Word has length 950 [2022-01-10 21:56:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:56:34,316 INFO L470 AbstractCegarLoop]: Abstraction has 37632 states and 46687 transitions. [2022-01-10 21:56:34,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 37632 states and 46687 transitions. [2022-01-10 21:56:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2022-01-10 21:56:34,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:56:34,365 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:56:34,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 21:56:34,366 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:56:34,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:56:34,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1968573225, now seen corresponding path program 1 times [2022-01-10 21:56:34,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:56:34,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435350595] [2022-01-10 21:56:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:56:34,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:56:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:56:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-01-10 21:56:34,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:56:34,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435350595] [2022-01-10 21:56:34,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435350595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:56:34,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:56:34,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:56:34,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505082268] [2022-01-10 21:56:34,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:56:34,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:56:34,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:56:34,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:56:34,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:34,896 INFO L87 Difference]: Start difference. First operand 37632 states and 46687 transitions. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:56:38,188 INFO L93 Difference]: Finished difference Result 75262 states and 93414 transitions. [2022-01-10 21:56:38,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:56:38,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 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 1016 [2022-01-10 21:56:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:56:38,245 INFO L225 Difference]: With dead ends: 75262 [2022-01-10 21:56:38,246 INFO L226 Difference]: Without dead ends: 38450 [2022-01-10 21:56:38,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:38,271 INFO L933 BasicCegarLoop]: 1565 mSDtfsCounter, 773 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 3021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:56:38,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 1574 Invalid, 3021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 21:56:38,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38450 states. [2022-01-10 21:56:38,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38450 to 38450. [2022-01-10 21:56:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38450 states, 38449 states have (on average 1.2060391687690186) internal successors, (46371), 38449 states have internal predecessors, (46371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:38,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38450 states to 38450 states and 46371 transitions. [2022-01-10 21:56:38,958 INFO L78 Accepts]: Start accepts. Automaton has 38450 states and 46371 transitions. Word has length 1016 [2022-01-10 21:56:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:56:38,959 INFO L470 AbstractCegarLoop]: Abstraction has 38450 states and 46371 transitions. [2022-01-10 21:56:38,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:38,960 INFO L276 IsEmpty]: Start isEmpty. Operand 38450 states and 46371 transitions. [2022-01-10 21:56:39,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2022-01-10 21:56:39,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:56:39,013 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:56:39,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 21:56:39,014 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:56:39,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:56:39,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1756072342, now seen corresponding path program 1 times [2022-01-10 21:56:39,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:56:39,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942908839] [2022-01-10 21:56:39,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:56:39,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:56:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:56:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-01-10 21:56:39,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:56:39,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942908839] [2022-01-10 21:56:39,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942908839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:56:39,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:56:39,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:56:39,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575062068] [2022-01-10 21:56:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:56:39,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:56:39,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:56:39,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:56:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:39,660 INFO L87 Difference]: Start difference. First operand 38450 states and 46371 transitions. Second operand has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:43,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:56:43,136 INFO L93 Difference]: Finished difference Result 81806 states and 98746 transitions. [2022-01-10 21:56:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:56:43,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 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 1023 [2022-01-10 21:56:43,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:56:43,190 INFO L225 Difference]: With dead ends: 81806 [2022-01-10 21:56:43,191 INFO L226 Difference]: Without dead ends: 44176 [2022-01-10 21:56:43,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:43,205 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 775 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:56:43,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1569 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 21:56:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44176 states. [2022-01-10 21:56:43,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44176 to 44176. [2022-01-10 21:56:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44176 states, 44175 states have (on average 1.1863950198075834) internal successors, (52409), 44175 states have internal predecessors, (52409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44176 states to 44176 states and 52409 transitions. [2022-01-10 21:56:43,840 INFO L78 Accepts]: Start accepts. Automaton has 44176 states and 52409 transitions. Word has length 1023 [2022-01-10 21:56:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:56:43,841 INFO L470 AbstractCegarLoop]: Abstraction has 44176 states and 52409 transitions. [2022-01-10 21:56:43,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:56:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 44176 states and 52409 transitions. [2022-01-10 21:56:43,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2022-01-10 21:56:43,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:56:43,915 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:56:43,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 21:56:43,915 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:56:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:56:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash -478731685, now seen corresponding path program 1 times [2022-01-10 21:56:43,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:56:43,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246168451] [2022-01-10 21:56:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:56:43,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:56:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:56:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-01-10 21:56:44,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:56:44,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246168451] [2022-01-10 21:56:44,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246168451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:56:44,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:56:44,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:56:44,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684345447] [2022-01-10 21:56:44,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:56:44,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:56:44,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:56:44,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:56:44,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:56:44,356 INFO L87 Difference]: Start difference. First operand 44176 states and 52409 transitions. Second operand has 3 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)