/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:21:48,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:21:48,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:21:48,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:21:48,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:21:48,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:21:48,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:21:48,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:21:48,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:21:48,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:21:48,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:21:48,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:21:48,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:21:48,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:21:48,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:21:48,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:21:48,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:21:48,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:21:48,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:21:48,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:21:48,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:21:48,118 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:21:48,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:21:48,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:21:48,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:21:48,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:21:48,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:21:48,123 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:21:48,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:21:48,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:21:48,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:21:48,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:21:48,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:21:48,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:21:48,124 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:21:48,124 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:21:48,124 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:21:48,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:21:48,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:21:48,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:21:48,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:21:48,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:21:48,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:21:48,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:21:48,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:21:48,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:21:48,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:21:48,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:21:48,125 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:21:48,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:21:48,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:21:48,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:21:48,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:21:48,127 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:21:48,127 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:21:48,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:21:48,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:21:48,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:21:48,336 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:21:48,337 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:21:48,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-01-11 00:21:48,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d8208c4/4f903c188d934defba28f578264fd217/FLAG6b11391b1 [2022-01-11 00:21:48,795 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:21:48,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2022-01-11 00:21:48,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d8208c4/4f903c188d934defba28f578264fd217/FLAG6b11391b1 [2022-01-11 00:21:48,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d8208c4/4f903c188d934defba28f578264fd217 [2022-01-11 00:21:48,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:21:48,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:21:48,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:21:48,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:21:48,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:21:48,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:21:48" (1/1) ... [2022-01-11 00:21:48,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2530acbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:48, skipping insertion in model container [2022-01-11 00:21:48,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:21:48" (1/1) ... [2022-01-11 00:21:48,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:21:48,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:21:49,027 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2022-01-11 00:21:49,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:21:49,036 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:21:49,070 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2022-01-11 00:21:49,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:21:49,087 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:21:49,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49 WrapperNode [2022-01-11 00:21:49,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:21:49,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:21:49,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:21:49,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:21:49,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:49,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:49,126 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 426 [2022-01-11 00:21:49,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:21:49,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:21:49,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:21:49,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:21:49,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:49,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:49,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:49,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:49,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:49,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:49,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:49,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:21:49,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:21:49,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:21:49,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:21:49,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:49,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:21:49,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:21:49,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:21:49,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:21:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:21:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:21:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:21:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:21:49,296 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:21:49,297 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:21:49,699 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:21:49,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:21:49,704 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 00:21:49,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:21:49 BoogieIcfgContainer [2022-01-11 00:21:49,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:21:49,706 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:21:49,706 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:21:49,710 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:21:49,712 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:21:49" (1/1) ... [2022-01-11 00:21:50,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:21:50 BasicIcfg [2022-01-11 00:21:50,000 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:21:50,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:21:50,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:21:50,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:21:50,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:21:48" (1/4) ... [2022-01-11 00:21:50,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779f2f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:21:50, skipping insertion in model container [2022-01-11 00:21:50,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:21:49" (2/4) ... [2022-01-11 00:21:50,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779f2f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:21:50, skipping insertion in model container [2022-01-11 00:21:50,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:21:49" (3/4) ... [2022-01-11 00:21:50,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779f2f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:21:50, skipping insertion in model container [2022-01-11 00:21:50,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:21:50" (4/4) ... [2022-01-11 00:21:50,007 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-11 00:21:50,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:21:50,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:21:50,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:21:50,055 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:21:50,055 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:21:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:50,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:21:50,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:50,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:50,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1949686075, now seen corresponding path program 1 times [2022-01-11 00:21:50,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:50,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117518473] [2022-01-11 00:21:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:50,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:50,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:50,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117518473] [2022-01-11 00:21:50,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117518473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:50,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:50,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:21:50,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623152982] [2022-01-11 00:21:50,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:50,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:21:50,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:50,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:21:50,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:21:50,333 INFO L87 Difference]: Start difference. First operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:50,363 INFO L93 Difference]: Finished difference Result 214 states and 367 transitions. [2022-01-11 00:21:50,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:21:50,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 00:21:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:50,374 INFO L225 Difference]: With dead ends: 214 [2022-01-11 00:21:50,374 INFO L226 Difference]: Without dead ends: 133 [2022-01-11 00:21:50,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:21:50,379 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:50,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-11 00:21:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-01-11 00:21:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 132 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 229 transitions. [2022-01-11 00:21:50,415 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 229 transitions. Word has length 37 [2022-01-11 00:21:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:50,416 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 229 transitions. [2022-01-11 00:21:50,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 229 transitions. [2022-01-11 00:21:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:21:50,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:50,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:50,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:21:50,418 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:50,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:50,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1936456996, now seen corresponding path program 1 times [2022-01-11 00:21:50,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:50,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856636227] [2022-01-11 00:21:50,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:50,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:50,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:50,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856636227] [2022-01-11 00:21:50,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856636227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:50,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:50,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:21:50,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789995983] [2022-01-11 00:21:50,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:50,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:21:50,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:50,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:21:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:21:50,528 INFO L87 Difference]: Start difference. First operand 133 states and 229 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:50,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:50,590 INFO L93 Difference]: Finished difference Result 213 states and 360 transitions. [2022-01-11 00:21:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:21:50,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 00:21:50,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:50,591 INFO L225 Difference]: With dead ends: 213 [2022-01-11 00:21:50,591 INFO L226 Difference]: Without dead ends: 133 [2022-01-11 00:21:50,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:21:50,592 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 3 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:50,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 878 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:50,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-11 00:21:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-01-11 00:21:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 132 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:50,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 202 transitions. [2022-01-11 00:21:50,598 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 202 transitions. Word has length 37 [2022-01-11 00:21:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:50,598 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 202 transitions. [2022-01-11 00:21:50,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 202 transitions. [2022-01-11 00:21:50,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 00:21:50,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:50,600 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] [2022-01-11 00:21:50,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:21:50,600 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:50,600 INFO L85 PathProgramCache]: Analyzing trace with hash -161924253, now seen corresponding path program 1 times [2022-01-11 00:21:50,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:50,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258332348] [2022-01-11 00:21:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:50,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:50,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:50,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258332348] [2022-01-11 00:21:50,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258332348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:50,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:50,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:21:50,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899555844] [2022-01-11 00:21:50,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:50,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:21:50,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:50,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:21:50,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:50,831 INFO L87 Difference]: Start difference. First operand 133 states and 202 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:50,884 INFO L93 Difference]: Finished difference Result 276 states and 439 transitions. [2022-01-11 00:21:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:21:50,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-11 00:21:50,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:50,889 INFO L225 Difference]: With dead ends: 276 [2022-01-11 00:21:50,889 INFO L226 Difference]: Without dead ends: 200 [2022-01-11 00:21:50,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:50,895 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 101 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:50,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 356 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:50,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-01-11 00:21:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2022-01-11 00:21:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.5510204081632653) internal successors, (304), 196 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 304 transitions. [2022-01-11 00:21:50,918 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 304 transitions. Word has length 63 [2022-01-11 00:21:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:50,918 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 304 transitions. [2022-01-11 00:21:50,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 304 transitions. [2022-01-11 00:21:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 00:21:50,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:50,920 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] [2022-01-11 00:21:50,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:21:50,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1762350011, now seen corresponding path program 1 times [2022-01-11 00:21:50,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:50,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926739119] [2022-01-11 00:21:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:50,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:51,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:51,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926739119] [2022-01-11 00:21:51,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926739119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:51,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:51,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:21:51,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815580735] [2022-01-11 00:21:51,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:51,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:21:51,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:51,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:21:51,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:21:51,079 INFO L87 Difference]: Start difference. First operand 197 states and 304 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:51,127 INFO L93 Difference]: Finished difference Result 554 states and 849 transitions. [2022-01-11 00:21:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:21:51,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 00:21:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:51,130 INFO L225 Difference]: With dead ends: 554 [2022-01-11 00:21:51,130 INFO L226 Difference]: Without dead ends: 382 [2022-01-11 00:21:51,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:21:51,137 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 444 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:51,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 459 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-01-11 00:21:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2022-01-11 00:21:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.5356200527704484) internal successors, (582), 379 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 582 transitions. [2022-01-11 00:21:51,150 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 582 transitions. Word has length 65 [2022-01-11 00:21:51,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:51,151 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 582 transitions. [2022-01-11 00:21:51,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,151 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 582 transitions. [2022-01-11 00:21:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:21:51,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:51,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:51,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:21:51,153 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:51,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1781394078, now seen corresponding path program 1 times [2022-01-11 00:21:51,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:51,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521126765] [2022-01-11 00:21:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:51,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:51,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:51,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521126765] [2022-01-11 00:21:51,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521126765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:51,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:51,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:21:51,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832595638] [2022-01-11 00:21:51,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:51,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:21:51,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:51,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:21:51,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:51,187 INFO L87 Difference]: Start difference. First operand 380 states and 582 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:51,203 INFO L93 Difference]: Finished difference Result 1102 states and 1682 transitions. [2022-01-11 00:21:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:21:51,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 00:21:51,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:51,206 INFO L225 Difference]: With dead ends: 1102 [2022-01-11 00:21:51,206 INFO L226 Difference]: Without dead ends: 750 [2022-01-11 00:21:51,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:51,207 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 191 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:51,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 583 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-01-11 00:21:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 382. [2022-01-11 00:21:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.5328083989501313) internal successors, (584), 381 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 584 transitions. [2022-01-11 00:21:51,221 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 584 transitions. Word has length 66 [2022-01-11 00:21:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:51,221 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 584 transitions. [2022-01-11 00:21:51,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 584 transitions. [2022-01-11 00:21:51,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 00:21:51,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:51,223 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] [2022-01-11 00:21:51,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:21:51,223 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1542591690, now seen corresponding path program 1 times [2022-01-11 00:21:51,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:51,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826844278] [2022-01-11 00:21:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:51,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:51,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:51,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826844278] [2022-01-11 00:21:51,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826844278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:51,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:51,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:21:51,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276239723] [2022-01-11 00:21:51,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:51,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:21:51,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:51,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:21:51,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:51,308 INFO L87 Difference]: Start difference. First operand 382 states and 584 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:51,324 INFO L93 Difference]: Finished difference Result 650 states and 1030 transitions. [2022-01-11 00:21:51,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:21:51,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-11 00:21:51,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:51,327 INFO L225 Difference]: With dead ends: 650 [2022-01-11 00:21:51,327 INFO L226 Difference]: Without dead ends: 501 [2022-01-11 00:21:51,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:51,329 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 108 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:51,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 465 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-01-11 00:21:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 499. [2022-01-11 00:21:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.5602409638554218) internal successors, (777), 498 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 777 transitions. [2022-01-11 00:21:51,344 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 777 transitions. Word has length 67 [2022-01-11 00:21:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:51,345 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 777 transitions. [2022-01-11 00:21:51,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,345 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 777 transitions. [2022-01-11 00:21:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 00:21:51,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:51,347 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] [2022-01-11 00:21:51,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:21:51,347 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash -65909211, now seen corresponding path program 1 times [2022-01-11 00:21:51,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:51,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839201293] [2022-01-11 00:21:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:51,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:51,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:51,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839201293] [2022-01-11 00:21:51,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839201293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:51,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:51,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:21:51,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751925799] [2022-01-11 00:21:51,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:51,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:21:51,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:51,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:21:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:21:51,454 INFO L87 Difference]: Start difference. First operand 499 states and 777 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:51,519 INFO L93 Difference]: Finished difference Result 1457 states and 2267 transitions. [2022-01-11 00:21:51,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:21:51,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-11 00:21:51,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:51,522 INFO L225 Difference]: With dead ends: 1457 [2022-01-11 00:21:51,522 INFO L226 Difference]: Without dead ends: 970 [2022-01-11 00:21:51,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:21:51,524 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 406 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:51,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 486 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:51,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-01-11 00:21:51,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 968. [2022-01-11 00:21:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 1.5449844881075492) internal successors, (1494), 967 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1494 transitions. [2022-01-11 00:21:51,550 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1494 transitions. Word has length 67 [2022-01-11 00:21:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:51,550 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1494 transitions. [2022-01-11 00:21:51,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1494 transitions. [2022-01-11 00:21:51,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 00:21:51,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:51,551 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] [2022-01-11 00:21:51,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:21:51,551 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:51,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1277099452, now seen corresponding path program 1 times [2022-01-11 00:21:51,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:51,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321797199] [2022-01-11 00:21:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:51,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:51,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:51,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321797199] [2022-01-11 00:21:51,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321797199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:51,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:51,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:21:51,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134383672] [2022-01-11 00:21:51,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:51,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:21:51,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:51,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:21:51,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:21:51,604 INFO L87 Difference]: Start difference. First operand 968 states and 1494 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:51,634 INFO L93 Difference]: Finished difference Result 1686 states and 2596 transitions. [2022-01-11 00:21:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:21:51,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-11 00:21:51,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:51,638 INFO L225 Difference]: With dead ends: 1686 [2022-01-11 00:21:51,638 INFO L226 Difference]: Without dead ends: 734 [2022-01-11 00:21:51,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:21:51,639 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 69 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:51,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 641 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:51,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-01-11 00:21:51,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2022-01-11 00:21:51,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.5361527967257844) internal successors, (1126), 733 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1126 transitions. [2022-01-11 00:21:51,661 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1126 transitions. Word has length 67 [2022-01-11 00:21:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:51,664 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1126 transitions. [2022-01-11 00:21:51,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1126 transitions. [2022-01-11 00:21:51,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:21:51,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:51,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:51,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:21:51,668 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:51,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:51,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1151208723, now seen corresponding path program 1 times [2022-01-11 00:21:51,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:51,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620306250] [2022-01-11 00:21:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:51,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:51,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:51,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620306250] [2022-01-11 00:21:51,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620306250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:51,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:51,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:21:51,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163421611] [2022-01-11 00:21:51,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:51,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:21:51,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:51,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:21:51,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:51,709 INFO L87 Difference]: Start difference. First operand 734 states and 1126 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:51,731 INFO L93 Difference]: Finished difference Result 1442 states and 2205 transitions. [2022-01-11 00:21:51,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:21:51,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 00:21:51,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:51,735 INFO L225 Difference]: With dead ends: 1442 [2022-01-11 00:21:51,735 INFO L226 Difference]: Without dead ends: 965 [2022-01-11 00:21:51,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:51,737 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 188 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:51,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 396 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2022-01-11 00:21:51,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 734. [2022-01-11 00:21:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.534788540245566) internal successors, (1125), 733 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1125 transitions. [2022-01-11 00:21:51,756 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1125 transitions. Word has length 68 [2022-01-11 00:21:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:51,756 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1125 transitions. [2022-01-11 00:21:51,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1125 transitions. [2022-01-11 00:21:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:21:51,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:51,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:51,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:21:51,757 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1318048156, now seen corresponding path program 1 times [2022-01-11 00:21:51,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:51,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433521731] [2022-01-11 00:21:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:51,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:51,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:51,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433521731] [2022-01-11 00:21:51,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433521731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:51,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:51,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:21:51,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366346841] [2022-01-11 00:21:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:51,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:21:51,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:51,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:21:51,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:51,880 INFO L87 Difference]: Start difference. First operand 734 states and 1125 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:51,931 INFO L93 Difference]: Finished difference Result 1820 states and 2878 transitions. [2022-01-11 00:21:51,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:21:51,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 00:21:51,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:51,935 INFO L225 Difference]: With dead ends: 1820 [2022-01-11 00:21:51,935 INFO L226 Difference]: Without dead ends: 1247 [2022-01-11 00:21:51,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:51,936 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 99 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:51,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 363 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:51,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-01-11 00:21:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1236. [2022-01-11 00:21:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.5554655870445344) internal successors, (1921), 1235 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1921 transitions. [2022-01-11 00:21:51,969 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1921 transitions. Word has length 69 [2022-01-11 00:21:51,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:51,970 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1921 transitions. [2022-01-11 00:21:51,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:51,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1921 transitions. [2022-01-11 00:21:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 00:21:51,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:51,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:51,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:21:51,971 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:51,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:51,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1201548212, now seen corresponding path program 1 times [2022-01-11 00:21:51,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:51,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963092374] [2022-01-11 00:21:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:51,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:52,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:52,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963092374] [2022-01-11 00:21:52,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963092374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:52,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:52,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:21:52,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98117669] [2022-01-11 00:21:52,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:52,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:21:52,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:21:52,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:21:52,069 INFO L87 Difference]: Start difference. First operand 1236 states and 1921 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:52,144 INFO L93 Difference]: Finished difference Result 3593 states and 5583 transitions. [2022-01-11 00:21:52,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:21:52,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-11 00:21:52,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:52,150 INFO L225 Difference]: With dead ends: 3593 [2022-01-11 00:21:52,151 INFO L226 Difference]: Without dead ends: 2404 [2022-01-11 00:21:52,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:21:52,154 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 405 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:52,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 451 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:52,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2022-01-11 00:21:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2402. [2022-01-11 00:21:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2401 states have (on average 1.5447730112453144) internal successors, (3709), 2401 states have internal predecessors, (3709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:52,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3709 transitions. [2022-01-11 00:21:52,258 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3709 transitions. Word has length 71 [2022-01-11 00:21:52,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:52,259 INFO L470 AbstractCegarLoop]: Abstraction has 2402 states and 3709 transitions. [2022-01-11 00:21:52,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:52,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3709 transitions. [2022-01-11 00:21:52,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 00:21:52,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:52,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:52,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:21:52,260 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash 13117725, now seen corresponding path program 1 times [2022-01-11 00:21:52,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:52,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753701259] [2022-01-11 00:21:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:52,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:52,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:52,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753701259] [2022-01-11 00:21:52,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753701259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:52,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:52,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:21:52,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485060422] [2022-01-11 00:21:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:52,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:21:52,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:21:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:52,295 INFO L87 Difference]: Start difference. First operand 2402 states and 3709 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:52,393 INFO L93 Difference]: Finished difference Result 7112 states and 10980 transitions. [2022-01-11 00:21:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:21:52,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 00:21:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:52,405 INFO L225 Difference]: With dead ends: 7112 [2022-01-11 00:21:52,405 INFO L226 Difference]: Without dead ends: 4766 [2022-01-11 00:21:52,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:52,409 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 177 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:52,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 563 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2022-01-11 00:21:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 2408. [2022-01-11 00:21:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2407 states have (on average 1.5434150394682178) internal successors, (3715), 2407 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:52,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3715 transitions. [2022-01-11 00:21:52,511 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3715 transitions. Word has length 72 [2022-01-11 00:21:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:52,511 INFO L470 AbstractCegarLoop]: Abstraction has 2408 states and 3715 transitions. [2022-01-11 00:21:52,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3715 transitions. [2022-01-11 00:21:52,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:21:52,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:52,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:52,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:21:52,513 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:52,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash -275066658, now seen corresponding path program 1 times [2022-01-11 00:21:52,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:52,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867432411] [2022-01-11 00:21:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:52,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:52,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:52,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867432411] [2022-01-11 00:21:52,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867432411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:52,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:52,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:21:52,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263224052] [2022-01-11 00:21:52,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:52,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:21:52,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:52,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:21:52,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:21:52,607 INFO L87 Difference]: Start difference. First operand 2408 states and 3715 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:52,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:52,747 INFO L93 Difference]: Finished difference Result 6778 states and 10556 transitions. [2022-01-11 00:21:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:21:52,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:21:52,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:52,760 INFO L225 Difference]: With dead ends: 6778 [2022-01-11 00:21:52,760 INFO L226 Difference]: Without dead ends: 4672 [2022-01-11 00:21:52,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:21:52,764 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 419 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:52,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 444 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:52,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2022-01-11 00:21:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 4670. [2022-01-11 00:21:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4670 states, 4669 states have (on average 1.5258085243092738) internal successors, (7124), 4669 states have internal predecessors, (7124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 7124 transitions. [2022-01-11 00:21:52,933 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 7124 transitions. Word has length 73 [2022-01-11 00:21:52,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:52,933 INFO L470 AbstractCegarLoop]: Abstraction has 4670 states and 7124 transitions. [2022-01-11 00:21:52,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 7124 transitions. [2022-01-11 00:21:52,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:21:52,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:52,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:52,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:21:52,936 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash 370182581, now seen corresponding path program 1 times [2022-01-11 00:21:52,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:52,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578674072] [2022-01-11 00:21:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:52,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:52,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:52,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578674072] [2022-01-11 00:21:52,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578674072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:52,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:52,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:21:52,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839429059] [2022-01-11 00:21:52,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:52,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:21:52,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:21:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:21:52,984 INFO L87 Difference]: Start difference. First operand 4670 states and 7124 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:53,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:53,102 INFO L93 Difference]: Finished difference Result 8188 states and 12464 transitions. [2022-01-11 00:21:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:21:53,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:21:53,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:53,114 INFO L225 Difference]: With dead ends: 8188 [2022-01-11 00:21:53,114 INFO L226 Difference]: Without dead ends: 3556 [2022-01-11 00:21:53,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:21:53,119 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 47 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:53,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 620 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2022-01-11 00:21:53,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3555. [2022-01-11 00:21:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 3554 states have (on average 1.5171637591446259) internal successors, (5392), 3554 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 5392 transitions. [2022-01-11 00:21:53,221 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 5392 transitions. Word has length 73 [2022-01-11 00:21:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:53,221 INFO L470 AbstractCegarLoop]: Abstraction has 3555 states and 5392 transitions. [2022-01-11 00:21:53,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 5392 transitions. [2022-01-11 00:21:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:21:53,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:53,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:53,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:21:53,223 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:53,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1600481878, now seen corresponding path program 1 times [2022-01-11 00:21:53,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:53,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779903458] [2022-01-11 00:21:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:53,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:53,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:53,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779903458] [2022-01-11 00:21:53,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779903458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:53,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:53,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:21:53,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142043447] [2022-01-11 00:21:53,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:53,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:21:53,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:21:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:53,278 INFO L87 Difference]: Start difference. First operand 3555 states and 5392 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:53,435 INFO L93 Difference]: Finished difference Result 6562 states and 10143 transitions. [2022-01-11 00:21:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:21:53,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:21:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:53,449 INFO L225 Difference]: With dead ends: 6562 [2022-01-11 00:21:53,449 INFO L226 Difference]: Without dead ends: 4886 [2022-01-11 00:21:53,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:53,453 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 100 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:53,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 450 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:53,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2022-01-11 00:21:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4884. [2022-01-11 00:21:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4883 states have (on average 1.5257014130657383) internal successors, (7450), 4883 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 7450 transitions. [2022-01-11 00:21:53,637 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 7450 transitions. Word has length 73 [2022-01-11 00:21:53,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:53,637 INFO L470 AbstractCegarLoop]: Abstraction has 4884 states and 7450 transitions. [2022-01-11 00:21:53,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:53,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 7450 transitions. [2022-01-11 00:21:53,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 00:21:53,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:53,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:53,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:21:53,639 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:53,640 INFO L85 PathProgramCache]: Analyzing trace with hash 763696296, now seen corresponding path program 1 times [2022-01-11 00:21:53,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:53,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689462140] [2022-01-11 00:21:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:53,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:53,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:53,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689462140] [2022-01-11 00:21:53,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689462140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:53,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:53,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:21:53,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916169547] [2022-01-11 00:21:53,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:53,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:21:53,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:53,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:21:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:53,673 INFO L87 Difference]: Start difference. First operand 4884 states and 7450 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:53,826 INFO L93 Difference]: Finished difference Result 9654 states and 14741 transitions. [2022-01-11 00:21:53,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:21:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-11 00:21:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:53,846 INFO L225 Difference]: With dead ends: 9654 [2022-01-11 00:21:53,847 INFO L226 Difference]: Without dead ends: 6520 [2022-01-11 00:21:53,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:53,851 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 174 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:53,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 411 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:53,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2022-01-11 00:21:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 4884. [2022-01-11 00:21:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4883 states have (on average 1.5248822445218104) internal successors, (7446), 4883 states have internal predecessors, (7446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 7446 transitions. [2022-01-11 00:21:54,029 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 7446 transitions. Word has length 74 [2022-01-11 00:21:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:54,029 INFO L470 AbstractCegarLoop]: Abstraction has 4884 states and 7446 transitions. [2022-01-11 00:21:54,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:54,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 7446 transitions. [2022-01-11 00:21:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 00:21:54,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:54,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:54,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:21:54,032 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash 692854165, now seen corresponding path program 1 times [2022-01-11 00:21:54,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:54,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550189991] [2022-01-11 00:21:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:54,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:54,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:54,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550189991] [2022-01-11 00:21:54,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550189991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:54,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:54,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:21:54,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015169457] [2022-01-11 00:21:54,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:54,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:21:54,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:21:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:54,129 INFO L87 Difference]: Start difference. First operand 4884 states and 7446 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:54,379 INFO L93 Difference]: Finished difference Result 13123 states and 20327 transitions. [2022-01-11 00:21:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:21:54,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-11 00:21:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:54,392 INFO L225 Difference]: With dead ends: 13123 [2022-01-11 00:21:54,392 INFO L226 Difference]: Without dead ends: 8747 [2022-01-11 00:21:54,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:54,398 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 89 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:54,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 361 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8747 states. [2022-01-11 00:21:54,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8747 to 8664. [2022-01-11 00:21:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8664 states, 8663 states have (on average 1.5264919773750434) internal successors, (13224), 8663 states have internal predecessors, (13224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8664 states to 8664 states and 13224 transitions. [2022-01-11 00:21:54,703 INFO L78 Accepts]: Start accepts. Automaton has 8664 states and 13224 transitions. Word has length 75 [2022-01-11 00:21:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:54,703 INFO L470 AbstractCegarLoop]: Abstraction has 8664 states and 13224 transitions. [2022-01-11 00:21:54,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 8664 states and 13224 transitions. [2022-01-11 00:21:54,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:21:54,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:54,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:54,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:21:54,705 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:54,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash -814331539, now seen corresponding path program 1 times [2022-01-11 00:21:54,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:54,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629141836] [2022-01-11 00:21:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:54,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:54,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:54,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629141836] [2022-01-11 00:21:54,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629141836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:54,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:54,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:21:54,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804241031] [2022-01-11 00:21:54,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:54,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:21:54,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:54,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:21:54,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:21:54,775 INFO L87 Difference]: Start difference. First operand 8664 states and 13224 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:55,260 INFO L93 Difference]: Finished difference Result 22320 states and 34235 transitions. [2022-01-11 00:21:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:21:55,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 00:21:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:55,280 INFO L225 Difference]: With dead ends: 22320 [2022-01-11 00:21:55,281 INFO L226 Difference]: Without dead ends: 14164 [2022-01-11 00:21:55,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:21:55,287 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 394 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:55,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 439 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:55,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14164 states. [2022-01-11 00:21:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14164 to 14162. [2022-01-11 00:21:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14162 states, 14161 states have (on average 1.5098509992232187) internal successors, (21381), 14161 states have internal predecessors, (21381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14162 states to 14162 states and 21381 transitions. [2022-01-11 00:21:55,804 INFO L78 Accepts]: Start accepts. Automaton has 14162 states and 21381 transitions. Word has length 77 [2022-01-11 00:21:55,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:55,804 INFO L470 AbstractCegarLoop]: Abstraction has 14162 states and 21381 transitions. [2022-01-11 00:21:55,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:55,804 INFO L276 IsEmpty]: Start isEmpty. Operand 14162 states and 21381 transitions. [2022-01-11 00:21:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:21:55,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:55,806 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] [2022-01-11 00:21:55,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:21:55,807 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1080225944, now seen corresponding path program 1 times [2022-01-11 00:21:55,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:55,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074336854] [2022-01-11 00:21:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:55,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:55,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:55,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074336854] [2022-01-11 00:21:55,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074336854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:55,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:55,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:21:55,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857865246] [2022-01-11 00:21:55,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:55,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:21:55,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:55,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:21:55,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:55,844 INFO L87 Difference]: Start difference. First operand 14162 states and 21381 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:56,788 INFO L93 Difference]: Finished difference Result 42072 states and 63575 transitions. [2022-01-11 00:21:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:21:56,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-11 00:21:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:56,839 INFO L225 Difference]: With dead ends: 42072 [2022-01-11 00:21:56,839 INFO L226 Difference]: Without dead ends: 28193 [2022-01-11 00:21:56,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:21:56,856 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 163 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:56,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 538 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28193 states. [2022-01-11 00:21:57,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28193 to 14186. [2022-01-11 00:21:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14186 states, 14185 states have (on average 1.5089883679943603) internal successors, (21405), 14185 states have internal predecessors, (21405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14186 states to 14186 states and 21405 transitions. [2022-01-11 00:21:57,478 INFO L78 Accepts]: Start accepts. Automaton has 14186 states and 21405 transitions. Word has length 78 [2022-01-11 00:21:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:57,479 INFO L470 AbstractCegarLoop]: Abstraction has 14186 states and 21405 transitions. [2022-01-11 00:21:57,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 14186 states and 21405 transitions. [2022-01-11 00:21:57,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 00:21:57,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:57,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:57,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:21:57,483 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:57,483 INFO L85 PathProgramCache]: Analyzing trace with hash -287790761, now seen corresponding path program 1 times [2022-01-11 00:21:57,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:57,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245351622] [2022-01-11 00:21:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:57,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:57,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:57,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245351622] [2022-01-11 00:21:57,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245351622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:57,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:57,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:21:57,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816884808] [2022-01-11 00:21:57,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:57,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:21:57,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:57,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:21:57,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:21:57,554 INFO L87 Difference]: Start difference. First operand 14186 states and 21405 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:58,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:21:58,407 INFO L93 Difference]: Finished difference Result 37182 states and 56071 transitions. [2022-01-11 00:21:58,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:21:58,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 00:21:58,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:21:58,439 INFO L225 Difference]: With dead ends: 37182 [2022-01-11 00:21:58,439 INFO L226 Difference]: Without dead ends: 23145 [2022-01-11 00:21:58,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:21:58,450 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 397 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:21:58,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 433 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:21:58,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23145 states. [2022-01-11 00:21:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23145 to 23143. [2022-01-11 00:21:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23143 states, 23142 states have (on average 1.490839166882724) internal successors, (34501), 23142 states have internal predecessors, (34501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:59,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23143 states to 23143 states and 34501 transitions. [2022-01-11 00:21:59,584 INFO L78 Accepts]: Start accepts. Automaton has 23143 states and 34501 transitions. Word has length 79 [2022-01-11 00:21:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:21:59,584 INFO L470 AbstractCegarLoop]: Abstraction has 23143 states and 34501 transitions. [2022-01-11 00:21:59,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:21:59,584 INFO L276 IsEmpty]: Start isEmpty. Operand 23143 states and 34501 transitions. [2022-01-11 00:21:59,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 00:21:59,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:21:59,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:21:59,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:21:59,588 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:21:59,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:21:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash 341125998, now seen corresponding path program 1 times [2022-01-11 00:21:59,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:21:59,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383985270] [2022-01-11 00:21:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:21:59,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:21:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:21:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:21:59,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:21:59,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383985270] [2022-01-11 00:21:59,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383985270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:21:59,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:21:59,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:21:59,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749303884] [2022-01-11 00:21:59,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:21:59,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:21:59,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:21:59,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:21:59,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:21:59,645 INFO L87 Difference]: Start difference. First operand 23143 states and 34501 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:00,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:22:00,332 INFO L93 Difference]: Finished difference Result 39515 states and 58994 transitions. [2022-01-11 00:22:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:22:00,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 00:22:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:22:00,357 INFO L225 Difference]: With dead ends: 39515 [2022-01-11 00:22:00,357 INFO L226 Difference]: Without dead ends: 19623 [2022-01-11 00:22:00,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:22:00,377 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 23 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:22:00,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 598 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:22:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19623 states. [2022-01-11 00:22:01,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19623 to 19617. [2022-01-11 00:22:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19617 states, 19616 states have (on average 1.4861337683523654) internal successors, (29152), 19616 states have internal predecessors, (29152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19617 states to 19617 states and 29152 transitions. [2022-01-11 00:22:01,131 INFO L78 Accepts]: Start accepts. Automaton has 19617 states and 29152 transitions. Word has length 79 [2022-01-11 00:22:01,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:22:01,131 INFO L470 AbstractCegarLoop]: Abstraction has 19617 states and 29152 transitions. [2022-01-11 00:22:01,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:01,131 INFO L276 IsEmpty]: Start isEmpty. Operand 19617 states and 29152 transitions. [2022-01-11 00:22:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 00:22:01,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:22:01,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:22:01,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:22:01,134 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:22:01,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:22:01,135 INFO L85 PathProgramCache]: Analyzing trace with hash 511219909, now seen corresponding path program 1 times [2022-01-11 00:22:01,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:22:01,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184812736] [2022-01-11 00:22:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:22:01,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:22:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:22:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:22:01,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:22:01,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184812736] [2022-01-11 00:22:01,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184812736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:22:01,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:22:01,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:22:01,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588016732] [2022-01-11 00:22:01,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:22:01,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:22:01,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:22:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:22:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:22:01,175 INFO L87 Difference]: Start difference. First operand 19617 states and 29152 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:01,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:22:01,740 INFO L93 Difference]: Finished difference Result 31716 states and 47139 transitions. [2022-01-11 00:22:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:22:01,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 00:22:01,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:22:01,758 INFO L225 Difference]: With dead ends: 31716 [2022-01-11 00:22:01,759 INFO L226 Difference]: Without dead ends: 16913 [2022-01-11 00:22:01,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:22:01,769 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 47 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:22:01,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 607 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:22:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16913 states. [2022-01-11 00:22:02,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16913 to 16913. [2022-01-11 00:22:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16913 states, 16912 states have (on average 1.4832663197729423) internal successors, (25085), 16912 states have internal predecessors, (25085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16913 states to 16913 states and 25085 transitions. [2022-01-11 00:22:02,344 INFO L78 Accepts]: Start accepts. Automaton has 16913 states and 25085 transitions. Word has length 79 [2022-01-11 00:22:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:22:02,344 INFO L470 AbstractCegarLoop]: Abstraction has 16913 states and 25085 transitions. [2022-01-11 00:22:02,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 16913 states and 25085 transitions. [2022-01-11 00:22:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:22:02,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:22:02,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:22:02,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:22:02,347 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:22:02,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:22:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1408600611, now seen corresponding path program 1 times [2022-01-11 00:22:02,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:22:02,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243613178] [2022-01-11 00:22:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:22:02,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:22:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:22:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:22:02,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:22:02,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243613178] [2022-01-11 00:22:02,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243613178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:22:02,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:22:02,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:22:02,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828672982] [2022-01-11 00:22:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:22:02,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:22:02,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:22:02,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:22:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:22:02,390 INFO L87 Difference]: Start difference. First operand 16913 states and 25085 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:22:03,168 INFO L93 Difference]: Finished difference Result 30796 states and 45732 transitions. [2022-01-11 00:22:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:22:03,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 00:22:03,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:22:03,195 INFO L225 Difference]: With dead ends: 30796 [2022-01-11 00:22:03,195 INFO L226 Difference]: Without dead ends: 21626 [2022-01-11 00:22:03,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:22:03,206 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 160 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:22:03,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 373 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:22:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21626 states. [2022-01-11 00:22:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21626 to 16913. [2022-01-11 00:22:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16913 states, 16912 states have (on average 1.4829706717123936) internal successors, (25080), 16912 states have internal predecessors, (25080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16913 states to 16913 states and 25080 transitions. [2022-01-11 00:22:04,021 INFO L78 Accepts]: Start accepts. Automaton has 16913 states and 25080 transitions. Word has length 80 [2022-01-11 00:22:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:22:04,021 INFO L470 AbstractCegarLoop]: Abstraction has 16913 states and 25080 transitions. [2022-01-11 00:22:04,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 16913 states and 25080 transitions. [2022-01-11 00:22:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:22:04,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:22:04,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:22:04,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:22:04,024 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:22:04,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:22:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash 102403520, now seen corresponding path program 1 times [2022-01-11 00:22:04,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:22:04,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124520644] [2022-01-11 00:22:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:22:04,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:22:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:22:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:22:04,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:22:04,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124520644] [2022-01-11 00:22:04,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124520644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:22:04,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:22:04,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:22:04,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344880419] [2022-01-11 00:22:04,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:22:04,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:22:04,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:22:04,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:22:04,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:22:04,103 INFO L87 Difference]: Start difference. First operand 16913 states and 25080 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:22:04,935 INFO L93 Difference]: Finished difference Result 31831 states and 47826 transitions. [2022-01-11 00:22:04,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:22:04,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 00:22:04,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:22:04,962 INFO L225 Difference]: With dead ends: 31831 [2022-01-11 00:22:04,962 INFO L226 Difference]: Without dead ends: 23201 [2022-01-11 00:22:04,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:22:04,970 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 90 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:22:04,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 427 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:22:04,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23201 states. [2022-01-11 00:22:05,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23201 to 23199. [2022-01-11 00:22:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23199 states, 23198 states have (on average 1.4863350288818002) internal successors, (34480), 23198 states have internal predecessors, (34480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23199 states to 23199 states and 34480 transitions. [2022-01-11 00:22:05,825 INFO L78 Accepts]: Start accepts. Automaton has 23199 states and 34480 transitions. Word has length 80 [2022-01-11 00:22:05,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:22:05,825 INFO L470 AbstractCegarLoop]: Abstraction has 23199 states and 34480 transitions. [2022-01-11 00:22:05,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 23199 states and 34480 transitions. [2022-01-11 00:22:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 00:22:05,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:22:05,827 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] [2022-01-11 00:22:05,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:22:05,827 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:22:05,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:22:05,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2037051570, now seen corresponding path program 1 times [2022-01-11 00:22:05,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:22:05,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129421700] [2022-01-11 00:22:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:22:05,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:22:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:22:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:22:05,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:22:05,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129421700] [2022-01-11 00:22:05,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129421700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:22:05,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:22:05,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:22:05,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119046359] [2022-01-11 00:22:05,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:22:05,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:22:05,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:22:05,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:22:05,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:22:05,995 INFO L87 Difference]: Start difference. First operand 23199 states and 34480 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:13,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:22:13,595 INFO L93 Difference]: Finished difference Result 118599 states and 180202 transitions. [2022-01-11 00:22:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:22:13,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-11 00:22:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:22:13,878 INFO L225 Difference]: With dead ends: 118599 [2022-01-11 00:22:13,878 INFO L226 Difference]: Without dead ends: 96457 [2022-01-11 00:22:13,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:22:13,911 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 755 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 00:22:13,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1261 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 00:22:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96457 states. [2022-01-11 00:22:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96457 to 43959. [2022-01-11 00:22:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43959 states, 43958 states have (on average 1.482688020383093) internal successors, (65176), 43958 states have internal predecessors, (65176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43959 states to 43959 states and 65176 transitions. [2022-01-11 00:22:18,401 INFO L78 Accepts]: Start accepts. Automaton has 43959 states and 65176 transitions. Word has length 81 [2022-01-11 00:22:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:22:18,402 INFO L470 AbstractCegarLoop]: Abstraction has 43959 states and 65176 transitions. [2022-01-11 00:22:18,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 43959 states and 65176 transitions. [2022-01-11 00:22:18,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:22:18,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:22:18,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:22:18,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:22:18,407 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:22:18,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:22:18,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1246115628, now seen corresponding path program 1 times [2022-01-11 00:22:18,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:22:18,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165273254] [2022-01-11 00:22:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:22:18,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:22:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:22:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:22:18,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:22:18,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165273254] [2022-01-11 00:22:18,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165273254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:22:18,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:22:18,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:22:18,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24758143] [2022-01-11 00:22:18,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:22:18,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:22:18,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:22:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:22:18,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:22:18,537 INFO L87 Difference]: Start difference. First operand 43959 states and 65176 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:29,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:22:29,144 INFO L93 Difference]: Finished difference Result 143329 states and 215717 transitions. [2022-01-11 00:22:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:22:29,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-11 00:22:29,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:22:29,330 INFO L225 Difference]: With dead ends: 143329 [2022-01-11 00:22:29,331 INFO L226 Difference]: Without dead ends: 100427 [2022-01-11 00:22:29,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:22:29,366 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 352 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:22:29,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 561 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:22:29,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100427 states. [2022-01-11 00:22:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100427 to 71885. [2022-01-11 00:22:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71885 states, 71884 states have (on average 1.4872294251850202) internal successors, (106908), 71884 states have internal predecessors, (106908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71885 states to 71885 states and 106908 transitions. [2022-01-11 00:22:38,078 INFO L78 Accepts]: Start accepts. Automaton has 71885 states and 106908 transitions. Word has length 82 [2022-01-11 00:22:38,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:22:38,078 INFO L470 AbstractCegarLoop]: Abstraction has 71885 states and 106908 transitions. [2022-01-11 00:22:38,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:22:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 71885 states and 106908 transitions. [2022-01-11 00:22:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:22:38,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:22:38,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:22:38,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:22:38,080 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:22:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:22:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash -47528170, now seen corresponding path program 1 times [2022-01-11 00:22:38,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:22:38,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207904220] [2022-01-11 00:22:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:22:38,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:22:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:22:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:22:38,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:22:38,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207904220] [2022-01-11 00:22:38,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207904220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:22:38,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:22:38,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:22:38,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685115824] [2022-01-11 00:22:38,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:22:38,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:22:38,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:22:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:22:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:22:38,217 INFO L87 Difference]: Start difference. First operand 71885 states and 106908 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)