/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_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:33:51,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:33:51,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:33:51,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 13:33:51,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:33:51,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:33:51,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:33:51,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:33:51,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:33:51,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:33:51,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:33:51,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:33:51,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:33:51,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:33:51,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:33:51,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:33:51,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:33:51,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:33:51,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:33:51,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:33:51,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:33:51,206 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:33:51,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:33:51,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:33:51,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:33:51,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:33:51,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:33:51,208 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:33:51,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:33:51,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:33:51,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:33:51,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:33:51,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:33:51,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:33:51,210 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:33:51,210 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:33:51,210 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:33:51,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:33:51,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:33:51,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:33:51,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:33:51,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:33:51,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:33:51,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:33:51,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:33:51,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:33:51,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:33:51,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:33:51,213 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:33:51,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:33:51,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:33:51,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:33:51,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:33:51,215 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:33:51,215 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:33:51,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:33:51,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:33:51,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:33:51,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:33:51,459 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:33:51,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c [2022-01-10 13:33:51,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2133cd64/706f9503c1d1430c8499cfcfff16f572/FLAG0942f5d45 [2022-01-10 13:33:52,423 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:33:52,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c [2022-01-10 13:33:52,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2133cd64/706f9503c1d1430c8499cfcfff16f572/FLAG0942f5d45 [2022-01-10 13:33:52,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2133cd64/706f9503c1d1430c8499cfcfff16f572 [2022-01-10 13:33:52,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:33:52,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:33:52,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:33:52,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:33:52,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:33:52,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:33:52" (1/1) ... [2022-01-10 13:33:52,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba345d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:52, skipping insertion in model container [2022-01-10 13:33:52,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:33:52" (1/1) ... [2022-01-10 13:33:52,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:33:53,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:33:54,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2022-01-10 13:33:54,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2022-01-10 13:33:54,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:33:54,955 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:33:55,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2022-01-10 13:33:55,736 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2022-01-10 13:33:55,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:33:55,826 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:33:55,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55 WrapperNode [2022-01-10 13:33:55,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:33:55,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:33:55,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:33:55,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:33:55,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (1/1) ... [2022-01-10 13:33:55,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (1/1) ... [2022-01-10 13:33:56,298 INFO L137 Inliner]: procedures = 53, calls = 53, calls flagged for inlining = 48, calls inlined = 87, statements flattened = 13397 [2022-01-10 13:33:56,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:33:56,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:33:56,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:33:56,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:33:56,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (1/1) ... [2022-01-10 13:33:56,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (1/1) ... [2022-01-10 13:33:56,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (1/1) ... [2022-01-10 13:33:56,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (1/1) ... [2022-01-10 13:33:56,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (1/1) ... [2022-01-10 13:33:56,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (1/1) ... [2022-01-10 13:33:56,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (1/1) ... [2022-01-10 13:33:56,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:33:56,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:33:56,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:33:56,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:33:56,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (1/1) ... [2022-01-10 13:33:56,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:33:56,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:33:56,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 13:33:56,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 13:33:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:33:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:33:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:33:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:33:57,135 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:33:57,137 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:34:06,203 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:34:06,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:34:06,228 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 13:34:06,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:34:06 BoogieIcfgContainer [2022-01-10 13:34:06,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:34:06,233 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:34:06,233 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:34:06,234 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:34:06,236 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:34:06" (1/1) ... [2022-01-10 13:34:07,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:34:07 BasicIcfg [2022-01-10 13:34:07,823 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:34:07,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:34:07,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:34:07,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:34:07,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:33:52" (1/4) ... [2022-01-10 13:34:07,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35871b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:34:07, skipping insertion in model container [2022-01-10 13:34:07,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:55" (2/4) ... [2022-01-10 13:34:07,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35871b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:34:07, skipping insertion in model container [2022-01-10 13:34:07,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:34:06" (3/4) ... [2022-01-10 13:34:07,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35871b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:34:07, skipping insertion in model container [2022-01-10 13:34:07,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:34:07" (4/4) ... [2022-01-10 13:34:07,830 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.04.cil-1.cTransformedIcfg [2022-01-10 13:34:07,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:34:07,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 13:34:07,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:34:07,907 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 13:34:07,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 13:34:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:07,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:07,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:07,984 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:07,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:07,992 INFO L85 PathProgramCache]: Analyzing trace with hash -647753568, now seen corresponding path program 1 times [2022-01-10 13:34:07,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:08,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165279172] [2022-01-10 13:34:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:08,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:08,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:08,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165279172] [2022-01-10 13:34:08,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165279172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:08,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:08,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:08,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310409659] [2022-01-10 13:34:08,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:08,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:08,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:08,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:08,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:08,350 INFO L87 Difference]: Start difference. First operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:08,589 INFO L93 Difference]: Finished difference Result 5216 states and 9466 transitions. [2022-01-10 13:34:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:08,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:08,630 INFO L225 Difference]: With dead ends: 5216 [2022-01-10 13:34:08,630 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:34:08,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:08,642 INFO L933 BasicCegarLoop]: 4655 mSDtfsCounter, 4648 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:08,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4648 Valid, 4655 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:34:08,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:34:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:34:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8040062843676354) internal successors, (4593), 2547 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-01-10 13:34:08,783 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 77 [2022-01-10 13:34:08,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:08,784 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-01-10 13:34:08,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-01-10 13:34:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:08,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:08,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:08,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:34:08,791 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:08,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash 656640161, now seen corresponding path program 1 times [2022-01-10 13:34:08,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:08,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397710718] [2022-01-10 13:34:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:08,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:08,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:08,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397710718] [2022-01-10 13:34:08,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397710718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:08,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:08,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:08,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528843770] [2022-01-10 13:34:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:08,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:08,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:08,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:08,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:08,900 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:08,981 INFO L93 Difference]: Finished difference Result 2962 states and 5208 transitions. [2022-01-10 13:34:08,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:08,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:08,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:08,992 INFO L225 Difference]: With dead ends: 2962 [2022-01-10 13:34:08,993 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:34:08,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:08,995 INFO L933 BasicCegarLoop]: 4583 mSDtfsCounter, 4575 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4575 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:08,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4575 Valid, 4583 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:09,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:34:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:34:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8020424194815396) internal successors, (4588), 2547 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4588 transitions. [2022-01-10 13:34:09,054 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4588 transitions. Word has length 77 [2022-01-10 13:34:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:09,055 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4588 transitions. [2022-01-10 13:34:09,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4588 transitions. [2022-01-10 13:34:09,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:09,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:09,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:09,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:34:09,057 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash -273275455, now seen corresponding path program 1 times [2022-01-10 13:34:09,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:09,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206186600] [2022-01-10 13:34:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:09,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:09,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:09,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206186600] [2022-01-10 13:34:09,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206186600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:09,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:09,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:09,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413582334] [2022-01-10 13:34:09,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:09,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:09,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:09,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:09,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:09,119 INFO L87 Difference]: Start difference. First operand 2548 states and 4588 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:09,179 INFO L93 Difference]: Finished difference Result 2961 states and 5197 transitions. [2022-01-10 13:34:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:09,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:09,190 INFO L225 Difference]: With dead ends: 2961 [2022-01-10 13:34:09,190 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:34:09,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:09,197 INFO L933 BasicCegarLoop]: 4578 mSDtfsCounter, 4569 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:09,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 4578 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:34:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:34:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8000785545954439) internal successors, (4583), 2547 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4583 transitions. [2022-01-10 13:34:09,269 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4583 transitions. Word has length 77 [2022-01-10 13:34:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:09,271 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4583 transitions. [2022-01-10 13:34:09,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4583 transitions. [2022-01-10 13:34:09,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:09,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:09,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:09,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:34:09,275 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:09,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1774937249, now seen corresponding path program 1 times [2022-01-10 13:34:09,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:09,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114442213] [2022-01-10 13:34:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:09,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:09,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:09,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114442213] [2022-01-10 13:34:09,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114442213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:09,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:09,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:09,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049832251] [2022-01-10 13:34:09,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:09,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:09,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:09,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:09,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:09,337 INFO L87 Difference]: Start difference. First operand 2548 states and 4583 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:09,395 INFO L93 Difference]: Finished difference Result 2960 states and 5186 transitions. [2022-01-10 13:34:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:09,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:09,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:09,406 INFO L225 Difference]: With dead ends: 2960 [2022-01-10 13:34:09,406 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:34:09,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:09,418 INFO L933 BasicCegarLoop]: 4573 mSDtfsCounter, 4563 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:09,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4563 Valid, 4573 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:34:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:34:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.798114689709348) internal successors, (4578), 2547 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4578 transitions. [2022-01-10 13:34:09,510 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4578 transitions. Word has length 77 [2022-01-10 13:34:09,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:09,510 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4578 transitions. [2022-01-10 13:34:09,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4578 transitions. [2022-01-10 13:34:09,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:09,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:09,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:09,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:34:09,512 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:09,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:09,513 INFO L85 PathProgramCache]: Analyzing trace with hash 178440641, now seen corresponding path program 1 times [2022-01-10 13:34:09,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:09,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524100794] [2022-01-10 13:34:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:09,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:09,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:09,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524100794] [2022-01-10 13:34:09,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524100794] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:09,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:09,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:09,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459958915] [2022-01-10 13:34:09,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:09,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:09,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:09,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:09,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:09,579 INFO L87 Difference]: Start difference. First operand 2548 states and 4578 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:09,667 INFO L93 Difference]: Finished difference Result 2959 states and 5175 transitions. [2022-01-10 13:34:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:09,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:09,680 INFO L225 Difference]: With dead ends: 2959 [2022-01-10 13:34:09,680 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:34:09,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:09,684 INFO L933 BasicCegarLoop]: 4554 mSDtfsCounter, 4498 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 4602 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:09,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4498 Valid, 4602 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:09,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:34:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:34:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.793401413982718) internal successors, (4566), 2547 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4566 transitions. [2022-01-10 13:34:09,766 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4566 transitions. Word has length 77 [2022-01-10 13:34:09,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:09,767 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4566 transitions. [2022-01-10 13:34:09,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4566 transitions. [2022-01-10 13:34:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:09,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:09,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:09,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:34:09,769 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash 581156033, now seen corresponding path program 1 times [2022-01-10 13:34:09,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:09,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071736206] [2022-01-10 13:34:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:09,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:09,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:09,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071736206] [2022-01-10 13:34:09,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071736206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:09,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:09,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:09,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396486568] [2022-01-10 13:34:09,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:09,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:09,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:09,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:09,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:09,812 INFO L87 Difference]: Start difference. First operand 2548 states and 4566 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:09,906 INFO L93 Difference]: Finished difference Result 2958 states and 5150 transitions. [2022-01-10 13:34:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:09,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:09,917 INFO L225 Difference]: With dead ends: 2958 [2022-01-10 13:34:09,918 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:34:09,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:09,921 INFO L933 BasicCegarLoop]: 4542 mSDtfsCounter, 4486 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4486 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:09,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4486 Valid, 4589 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:34:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:34:09,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.788688138256088) internal successors, (4554), 2547 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4554 transitions. [2022-01-10 13:34:09,992 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4554 transitions. Word has length 77 [2022-01-10 13:34:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:09,992 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4554 transitions. [2022-01-10 13:34:09,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4554 transitions. [2022-01-10 13:34:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:09,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:09,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:09,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:34:09,994 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:09,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1768998816, now seen corresponding path program 1 times [2022-01-10 13:34:09,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:09,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399903647] [2022-01-10 13:34:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:09,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:10,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:10,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399903647] [2022-01-10 13:34:10,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399903647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:10,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:10,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:10,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112328400] [2022-01-10 13:34:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:10,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:10,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:10,042 INFO L87 Difference]: Start difference. First operand 2548 states and 4554 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:10,121 INFO L93 Difference]: Finished difference Result 2956 states and 5123 transitions. [2022-01-10 13:34:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:10,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:10,133 INFO L225 Difference]: With dead ends: 2956 [2022-01-10 13:34:10,133 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:34:10,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:10,135 INFO L933 BasicCegarLoop]: 4530 mSDtfsCounter, 4473 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:10,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 4576 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:34:10,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:34:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.783974862529458) internal successors, (4542), 2547 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4542 transitions. [2022-01-10 13:34:10,394 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4542 transitions. Word has length 77 [2022-01-10 13:34:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:10,394 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4542 transitions. [2022-01-10 13:34:10,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4542 transitions. [2022-01-10 13:34:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:10,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:10,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:10,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:34:10,396 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:10,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:10,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1127088383, now seen corresponding path program 1 times [2022-01-10 13:34:10,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:10,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013987393] [2022-01-10 13:34:10,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:10,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:10,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:10,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013987393] [2022-01-10 13:34:10,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013987393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:10,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:10,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:10,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659399376] [2022-01-10 13:34:10,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:10,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:10,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:10,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:10,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:10,430 INFO L87 Difference]: Start difference. First operand 2548 states and 4542 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:10,495 INFO L93 Difference]: Finished difference Result 2955 states and 5098 transitions. [2022-01-10 13:34:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:10,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:10,505 INFO L225 Difference]: With dead ends: 2955 [2022-01-10 13:34:10,506 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:34:10,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:10,508 INFO L933 BasicCegarLoop]: 4518 mSDtfsCounter, 4461 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 4563 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:10,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4461 Valid, 4563 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:10,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:34:10,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:34:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.7792615868028279) internal successors, (4530), 2547 states have internal predecessors, (4530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4530 transitions. [2022-01-10 13:34:10,577 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4530 transitions. Word has length 77 [2022-01-10 13:34:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:10,577 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4530 transitions. [2022-01-10 13:34:10,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4530 transitions. [2022-01-10 13:34:10,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:10,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:10,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:10,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:34:10,579 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:10,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:10,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2130979199, now seen corresponding path program 1 times [2022-01-10 13:34:10,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:10,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914210613] [2022-01-10 13:34:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:10,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:10,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:10,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914210613] [2022-01-10 13:34:10,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914210613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:10,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:10,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:34:10,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666653328] [2022-01-10 13:34:10,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:10,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:34:10,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:10,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:34:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:34:10,667 INFO L87 Difference]: Start difference. First operand 2548 states and 4530 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:10,827 INFO L93 Difference]: Finished difference Result 3162 states and 5362 transitions. [2022-01-10 13:34:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:34:10,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:10,838 INFO L225 Difference]: With dead ends: 3162 [2022-01-10 13:34:10,838 INFO L226 Difference]: Without dead ends: 2769 [2022-01-10 13:34:10,840 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 [2022-01-10 13:34:10,841 INFO L933 BasicCegarLoop]: 4564 mSDtfsCounter, 1458 mSDsluCounter, 12849 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 17413 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:10,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 17413 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:34:10,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-01-10 13:34:10,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2551. [2022-01-10 13:34:10,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2551 states, 2549 states have (on average 1.7755982738328757) internal successors, (4526), 2550 states have internal predecessors, (4526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2551 states to 2551 states and 4526 transitions. [2022-01-10 13:34:10,913 INFO L78 Accepts]: Start accepts. Automaton has 2551 states and 4526 transitions. Word has length 77 [2022-01-10 13:34:10,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:10,913 INFO L470 AbstractCegarLoop]: Abstraction has 2551 states and 4526 transitions. [2022-01-10 13:34:10,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:10,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2551 states and 4526 transitions. [2022-01-10 13:34:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:10,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:10,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:10,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:34:10,915 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:10,915 INFO L85 PathProgramCache]: Analyzing trace with hash 430238720, now seen corresponding path program 1 times [2022-01-10 13:34:10,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:10,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035767288] [2022-01-10 13:34:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:10,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:10,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:10,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035767288] [2022-01-10 13:34:10,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035767288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:10,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:10,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:10,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76340112] [2022-01-10 13:34:10,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:10,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:10,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:10,966 INFO L87 Difference]: Start difference. First operand 2551 states and 4526 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:11,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:11,072 INFO L93 Difference]: Finished difference Result 3262 states and 5464 transitions. [2022-01-10 13:34:11,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:11,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:11,096 INFO L225 Difference]: With dead ends: 3262 [2022-01-10 13:34:11,096 INFO L226 Difference]: Without dead ends: 2868 [2022-01-10 13:34:11,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:11,098 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 4415 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 4972 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:11,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 4972 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:11,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-01-10 13:34:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2864. [2022-01-10 13:34:11,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2862 states have (on average 1.7232704402515724) internal successors, (4932), 2863 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4932 transitions. [2022-01-10 13:34:11,189 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4932 transitions. Word has length 77 [2022-01-10 13:34:11,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:11,190 INFO L470 AbstractCegarLoop]: Abstraction has 2864 states and 4932 transitions. [2022-01-10 13:34:11,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4932 transitions. [2022-01-10 13:34:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:11,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:11,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:11,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:34:11,193 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:11,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash 229688575, now seen corresponding path program 1 times [2022-01-10 13:34:11,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:11,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344781869] [2022-01-10 13:34:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:11,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:11,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:11,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344781869] [2022-01-10 13:34:11,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344781869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:11,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:11,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:11,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22281474] [2022-01-10 13:34:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:11,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:11,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:11,242 INFO L87 Difference]: Start difference. First operand 2864 states and 4932 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:11,350 INFO L93 Difference]: Finished difference Result 4200 states and 6687 transitions. [2022-01-10 13:34:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:11,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:11,358 INFO L225 Difference]: With dead ends: 4200 [2022-01-10 13:34:11,358 INFO L226 Difference]: Without dead ends: 3468 [2022-01-10 13:34:11,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:11,361 INFO L933 BasicCegarLoop]: 4514 mSDtfsCounter, 4415 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 4986 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:11,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 4986 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2022-01-10 13:34:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3466. [2022-01-10 13:34:11,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 1.6521362586605082) internal successors, (5723), 3465 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5723 transitions. [2022-01-10 13:34:11,479 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5723 transitions. Word has length 77 [2022-01-10 13:34:11,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:11,479 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5723 transitions. [2022-01-10 13:34:11,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:11,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5723 transitions. [2022-01-10 13:34:11,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:11,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:11,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:11,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:34:11,481 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:11,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:11,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1847520768, now seen corresponding path program 1 times [2022-01-10 13:34:11,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:11,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122795273] [2022-01-10 13:34:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:11,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:11,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:11,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122795273] [2022-01-10 13:34:11,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122795273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:11,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:11,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:11,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473397113] [2022-01-10 13:34:11,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:11,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:11,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:11,518 INFO L87 Difference]: Start difference. First operand 3466 states and 5723 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:11,795 INFO L93 Difference]: Finished difference Result 4793 states and 7464 transitions. [2022-01-10 13:34:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:11,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:11,802 INFO L225 Difference]: With dead ends: 4793 [2022-01-10 13:34:11,802 INFO L226 Difference]: Without dead ends: 3466 [2022-01-10 13:34:11,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:11,806 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4401 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:11,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4401 Valid, 4539 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2022-01-10 13:34:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 3466. [2022-01-10 13:34:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 1.6449191685912241) internal successors, (5698), 3465 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5698 transitions. [2022-01-10 13:34:11,939 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5698 transitions. Word has length 77 [2022-01-10 13:34:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:11,941 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5698 transitions. [2022-01-10 13:34:11,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5698 transitions. [2022-01-10 13:34:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:34:11,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:11,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:11,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:34:11,942 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1450374175, now seen corresponding path program 1 times [2022-01-10 13:34:11,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:11,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767420027] [2022-01-10 13:34:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:11,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:11,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:11,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767420027] [2022-01-10 13:34:11,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767420027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:11,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:11,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:11,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691070141] [2022-01-10 13:34:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:11,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:11,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:11,992 INFO L87 Difference]: Start difference. First operand 3466 states and 5698 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:12,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:12,206 INFO L93 Difference]: Finished difference Result 6029 states and 9021 transitions. [2022-01-10 13:34:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:12,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 13:34:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:12,218 INFO L225 Difference]: With dead ends: 6029 [2022-01-10 13:34:12,218 INFO L226 Difference]: Without dead ends: 4706 [2022-01-10 13:34:12,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:12,224 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4409 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 4947 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:12,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4409 Valid, 4947 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2022-01-10 13:34:12,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4560. [2022-01-10 13:34:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4558 states have (on average 1.556823168056165) internal successors, (7096), 4559 states have internal predecessors, (7096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7096 transitions. [2022-01-10 13:34:12,440 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7096 transitions. Word has length 77 [2022-01-10 13:34:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:12,441 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 7096 transitions. [2022-01-10 13:34:12,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7096 transitions. [2022-01-10 13:34:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:34:12,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:12,444 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:12,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:34:12,444 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:12,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1630624386, now seen corresponding path program 1 times [2022-01-10 13:34:12,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:12,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220498489] [2022-01-10 13:34:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:12,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:12,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:12,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220498489] [2022-01-10 13:34:12,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220498489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:12,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:12,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:12,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887809709] [2022-01-10 13:34:12,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:12,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:12,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:12,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:12,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:12,503 INFO L87 Difference]: Start difference. First operand 4560 states and 7096 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:12,925 INFO L93 Difference]: Finished difference Result 9212 states and 13099 transitions. [2022-01-10 13:34:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:12,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:34:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:12,939 INFO L225 Difference]: With dead ends: 9212 [2022-01-10 13:34:12,939 INFO L226 Difference]: Without dead ends: 6801 [2022-01-10 13:34:12,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:12,945 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 4418 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4944 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:12,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4944 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:12,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2022-01-10 13:34:13,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 6571. [2022-01-10 13:34:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6569 states have (on average 1.472674684122393) internal successors, (9674), 6570 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 9674 transitions. [2022-01-10 13:34:13,218 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 9674 transitions. Word has length 124 [2022-01-10 13:34:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:13,218 INFO L470 AbstractCegarLoop]: Abstraction has 6571 states and 9674 transitions. [2022-01-10 13:34:13,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 9674 transitions. [2022-01-10 13:34:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:34:13,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:13,222 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:13,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:34:13,222 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:13,223 INFO L85 PathProgramCache]: Analyzing trace with hash 549899582, now seen corresponding path program 1 times [2022-01-10 13:34:13,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:13,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011585604] [2022-01-10 13:34:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:13,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:13,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:13,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011585604] [2022-01-10 13:34:13,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011585604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:13,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:13,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:34:13,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974145929] [2022-01-10 13:34:13,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:13,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:34:13,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:13,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:34:13,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:34:13,309 INFO L87 Difference]: Start difference. First operand 6571 states and 9674 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:13,943 INFO L93 Difference]: Finished difference Result 14833 states and 20425 transitions. [2022-01-10 13:34:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:34:13,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:34:13,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:13,966 INFO L225 Difference]: With dead ends: 14833 [2022-01-10 13:34:13,966 INFO L226 Difference]: Without dead ends: 10435 [2022-01-10 13:34:13,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:34:13,978 INFO L933 BasicCegarLoop]: 4479 mSDtfsCounter, 1136 mSDsluCounter, 13259 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 17738 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:13,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 17738 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:34:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-01-10 13:34:14,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 6619. [2022-01-10 13:34:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6619 states, 6617 states have (on average 1.4594226991083572) internal successors, (9657), 6618 states have internal predecessors, (9657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6619 states to 6619 states and 9657 transitions. [2022-01-10 13:34:14,292 INFO L78 Accepts]: Start accepts. Automaton has 6619 states and 9657 transitions. Word has length 124 [2022-01-10 13:34:14,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:14,292 INFO L470 AbstractCegarLoop]: Abstraction has 6619 states and 9657 transitions. [2022-01-10 13:34:14,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:14,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6619 states and 9657 transitions. [2022-01-10 13:34:14,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:34:14,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:14,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:14,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:34:14,296 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:14,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash 584686780, now seen corresponding path program 1 times [2022-01-10 13:34:14,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:14,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220708663] [2022-01-10 13:34:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:14,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:14,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:14,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220708663] [2022-01-10 13:34:14,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220708663] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:14,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:14,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:14,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771632458] [2022-01-10 13:34:14,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:14,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:14,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:14,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:14,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:14,369 INFO L87 Difference]: Start difference. First operand 6619 states and 9657 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:14,928 INFO L93 Difference]: Finished difference Result 15041 states and 20225 transitions. [2022-01-10 13:34:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:14,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:34:14,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:14,948 INFO L225 Difference]: With dead ends: 15041 [2022-01-10 13:34:14,948 INFO L226 Difference]: Without dead ends: 10607 [2022-01-10 13:34:14,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:14,958 INFO L933 BasicCegarLoop]: 4690 mSDtfsCounter, 4315 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:14,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4315 Valid, 5208 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10607 states. [2022-01-10 13:34:15,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10607 to 10605. [2022-01-10 13:34:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10605 states, 10603 states have (on average 1.3708384419503914) internal successors, (14535), 10604 states have internal predecessors, (14535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10605 states to 10605 states and 14535 transitions. [2022-01-10 13:34:15,516 INFO L78 Accepts]: Start accepts. Automaton has 10605 states and 14535 transitions. Word has length 124 [2022-01-10 13:34:15,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:15,516 INFO L470 AbstractCegarLoop]: Abstraction has 10605 states and 14535 transitions. [2022-01-10 13:34:15,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:15,516 INFO L276 IsEmpty]: Start isEmpty. Operand 10605 states and 14535 transitions. [2022-01-10 13:34:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:34:15,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:15,521 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:15,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:34:15,521 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:15,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1810932571, now seen corresponding path program 1 times [2022-01-10 13:34:15,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:15,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992703591] [2022-01-10 13:34:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:15,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:34:15,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:15,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992703591] [2022-01-10 13:34:15,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992703591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:15,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:15,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:15,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027501979] [2022-01-10 13:34:15,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:15,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:15,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:15,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:15,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:15,551 INFO L87 Difference]: Start difference. First operand 10605 states and 14535 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:16,073 INFO L93 Difference]: Finished difference Result 18967 states and 24972 transitions. [2022-01-10 13:34:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:16,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:34:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:16,101 INFO L225 Difference]: With dead ends: 18967 [2022-01-10 13:34:16,101 INFO L226 Difference]: Without dead ends: 10547 [2022-01-10 13:34:16,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:16,114 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 532 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 8452 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:16,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 8452 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10547 states. [2022-01-10 13:34:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10547 to 10547. [2022-01-10 13:34:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10547 states, 10545 states have (on average 1.3720246562351825) internal successors, (14468), 10546 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10547 states to 10547 states and 14468 transitions. [2022-01-10 13:34:16,608 INFO L78 Accepts]: Start accepts. Automaton has 10547 states and 14468 transitions. Word has length 124 [2022-01-10 13:34:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:16,608 INFO L470 AbstractCegarLoop]: Abstraction has 10547 states and 14468 transitions. [2022-01-10 13:34:16,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 10547 states and 14468 transitions. [2022-01-10 13:34:16,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 13:34:16,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:16,613 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:16,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:34:16,614 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash -858880914, now seen corresponding path program 1 times [2022-01-10 13:34:16,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:16,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821022411] [2022-01-10 13:34:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:16,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:16,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:16,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821022411] [2022-01-10 13:34:16,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821022411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:16,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:16,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:16,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125688522] [2022-01-10 13:34:16,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:16,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:16,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:16,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:16,672 INFO L87 Difference]: Start difference. First operand 10547 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:17,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:17,646 INFO L93 Difference]: Finished difference Result 26816 states and 34670 transitions. [2022-01-10 13:34:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:17,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-10 13:34:17,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:17,689 INFO L225 Difference]: With dead ends: 26816 [2022-01-10 13:34:17,689 INFO L226 Difference]: Without dead ends: 18454 [2022-01-10 13:34:17,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:17,707 INFO L933 BasicCegarLoop]: 4619 mSDtfsCounter, 4418 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:17,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 5128 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2022-01-10 13:34:18,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 18164. [2022-01-10 13:34:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18164 states, 18162 states have (on average 1.3104283669199428) internal successors, (23800), 18163 states have internal predecessors, (23800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:18,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18164 states to 18164 states and 23800 transitions. [2022-01-10 13:34:18,574 INFO L78 Accepts]: Start accepts. Automaton has 18164 states and 23800 transitions. Word has length 125 [2022-01-10 13:34:18,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:18,575 INFO L470 AbstractCegarLoop]: Abstraction has 18164 states and 23800 transitions. [2022-01-10 13:34:18,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:18,575 INFO L276 IsEmpty]: Start isEmpty. Operand 18164 states and 23800 transitions. [2022-01-10 13:34:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 13:34:18,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:18,587 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:18,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:34:18,587 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:18,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:18,588 INFO L85 PathProgramCache]: Analyzing trace with hash 38033487, now seen corresponding path program 1 times [2022-01-10 13:34:18,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:18,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909804745] [2022-01-10 13:34:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:18,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:34:18,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:18,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909804745] [2022-01-10 13:34:18,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909804745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:18,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:18,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:18,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556203011] [2022-01-10 13:34:18,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:18,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:18,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:18,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:18,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:18,626 INFO L87 Difference]: Start difference. First operand 18164 states and 23800 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:19,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:19,479 INFO L93 Difference]: Finished difference Result 30318 states and 38834 transitions. [2022-01-10 13:34:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:19,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 13:34:19,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:19,535 INFO L225 Difference]: With dead ends: 30318 [2022-01-10 13:34:19,535 INFO L226 Difference]: Without dead ends: 14313 [2022-01-10 13:34:19,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:19,553 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 530 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 8451 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:19,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 8451 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14313 states. [2022-01-10 13:34:20,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14313 to 14313. [2022-01-10 13:34:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14313 states, 14311 states have (on average 1.3300957305569143) internal successors, (19035), 14312 states have internal predecessors, (19035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14313 states to 14313 states and 19035 transitions. [2022-01-10 13:34:20,158 INFO L78 Accepts]: Start accepts. Automaton has 14313 states and 19035 transitions. Word has length 125 [2022-01-10 13:34:20,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:20,159 INFO L470 AbstractCegarLoop]: Abstraction has 14313 states and 19035 transitions. [2022-01-10 13:34:20,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:20,159 INFO L276 IsEmpty]: Start isEmpty. Operand 14313 states and 19035 transitions. [2022-01-10 13:34:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 13:34:20,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:20,165 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:20,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:34:20,165 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:20,165 INFO L85 PathProgramCache]: Analyzing trace with hash 601273385, now seen corresponding path program 1 times [2022-01-10 13:34:20,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:20,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262664559] [2022-01-10 13:34:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:20,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:20,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:20,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262664559] [2022-01-10 13:34:20,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262664559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:20,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:20,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:20,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589194585] [2022-01-10 13:34:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:20,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:20,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:20,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:20,206 INFO L87 Difference]: Start difference. First operand 14313 states and 19035 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:21,449 INFO L93 Difference]: Finished difference Result 37129 states and 47171 transitions. [2022-01-10 13:34:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:21,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 13:34:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:21,490 INFO L225 Difference]: With dead ends: 37129 [2022-01-10 13:34:21,491 INFO L226 Difference]: Without dead ends: 25001 [2022-01-10 13:34:21,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:21,515 INFO L933 BasicCegarLoop]: 4641 mSDtfsCounter, 4418 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:21,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 5148 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:21,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25001 states. [2022-01-10 13:34:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25001 to 24327. [2022-01-10 13:34:22,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24327 states, 24325 states have (on average 1.2857965056526208) internal successors, (31277), 24326 states have internal predecessors, (31277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24327 states to 24327 states and 31277 transitions. [2022-01-10 13:34:22,662 INFO L78 Accepts]: Start accepts. Automaton has 24327 states and 31277 transitions. Word has length 126 [2022-01-10 13:34:22,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:22,663 INFO L470 AbstractCegarLoop]: Abstraction has 24327 states and 31277 transitions. [2022-01-10 13:34:22,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 24327 states and 31277 transitions. [2022-01-10 13:34:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 13:34:22,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:22,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:22,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:34:22,673 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:22,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1938805690, now seen corresponding path program 1 times [2022-01-10 13:34:22,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:22,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828946281] [2022-01-10 13:34:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:22,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:34:22,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:22,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828946281] [2022-01-10 13:34:22,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828946281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:22,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:22,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:22,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122613173] [2022-01-10 13:34:22,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:22,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:22,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:22,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:22,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:22,708 INFO L87 Difference]: Start difference. First operand 24327 states and 31277 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:23,724 INFO L93 Difference]: Finished difference Result 46432 states and 58482 transitions. [2022-01-10 13:34:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:23,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 126 [2022-01-10 13:34:23,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:23,757 INFO L225 Difference]: With dead ends: 46432 [2022-01-10 13:34:23,757 INFO L226 Difference]: Without dead ends: 24271 [2022-01-10 13:34:23,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:23,773 INFO L933 BasicCegarLoop]: 4492 mSDtfsCounter, 528 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 8450 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:23,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 8450 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:23,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24271 states. [2022-01-10 13:34:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24271 to 24271. [2022-01-10 13:34:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24271 states, 24269 states have (on average 1.2861675388355516) internal successors, (31214), 24270 states have internal predecessors, (31214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24271 states to 24271 states and 31214 transitions. [2022-01-10 13:34:25,087 INFO L78 Accepts]: Start accepts. Automaton has 24271 states and 31214 transitions. Word has length 126 [2022-01-10 13:34:25,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:25,087 INFO L470 AbstractCegarLoop]: Abstraction has 24271 states and 31214 transitions. [2022-01-10 13:34:25,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 24271 states and 31214 transitions. [2022-01-10 13:34:25,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:34:25,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:25,096 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:25,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:34:25,097 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash -386128003, now seen corresponding path program 1 times [2022-01-10 13:34:25,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:25,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077416135] [2022-01-10 13:34:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:25,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:25,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:25,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077416135] [2022-01-10 13:34:25,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077416135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:25,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:25,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:25,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334103265] [2022-01-10 13:34:25,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:25,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:25,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:25,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:25,175 INFO L87 Difference]: Start difference. First operand 24271 states and 31214 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:27,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:27,035 INFO L93 Difference]: Finished difference Result 64498 states and 80668 transitions. [2022-01-10 13:34:27,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:27,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-10 13:34:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:27,110 INFO L225 Difference]: With dead ends: 64498 [2022-01-10 13:34:27,110 INFO L226 Difference]: Without dead ends: 42412 [2022-01-10 13:34:27,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:27,132 INFO L933 BasicCegarLoop]: 4632 mSDtfsCounter, 4324 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 5144 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:27,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4324 Valid, 5144 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42412 states. [2022-01-10 13:34:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42412 to 42410. [2022-01-10 13:34:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42410 states, 42408 states have (on average 1.2583003206942087) internal successors, (53362), 42409 states have internal predecessors, (53362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42410 states to 42410 states and 53362 transitions. [2022-01-10 13:34:29,242 INFO L78 Accepts]: Start accepts. Automaton has 42410 states and 53362 transitions. Word has length 127 [2022-01-10 13:34:29,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:29,242 INFO L470 AbstractCegarLoop]: Abstraction has 42410 states and 53362 transitions. [2022-01-10 13:34:29,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:29,242 INFO L276 IsEmpty]: Start isEmpty. Operand 42410 states and 53362 transitions. [2022-01-10 13:34:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:34:29,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:29,252 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:29,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:34:29,253 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:29,253 INFO L85 PathProgramCache]: Analyzing trace with hash 840117788, now seen corresponding path program 1 times [2022-01-10 13:34:29,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:29,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27751772] [2022-01-10 13:34:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:29,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:34:29,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:29,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27751772] [2022-01-10 13:34:29,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27751772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:29,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:29,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:29,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868062388] [2022-01-10 13:34:29,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:29,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:29,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:29,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:29,283 INFO L87 Difference]: Start difference. First operand 42410 states and 53362 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:31,432 INFO L93 Difference]: Finished difference Result 82580 states and 102635 transitions. [2022-01-10 13:34:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:31,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 13:34:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:31,489 INFO L225 Difference]: With dead ends: 82580 [2022-01-10 13:34:31,489 INFO L226 Difference]: Without dead ends: 42355 [2022-01-10 13:34:31,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:31,515 INFO L933 BasicCegarLoop]: 4491 mSDtfsCounter, 526 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 8449 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:31,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 8449 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42355 states. [2022-01-10 13:34:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42355 to 42355. [2022-01-10 13:34:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42355 states, 42353 states have (on average 1.2584940854248814) internal successors, (53301), 42354 states have internal predecessors, (53301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42355 states to 42355 states and 53301 transitions. [2022-01-10 13:34:33,704 INFO L78 Accepts]: Start accepts. Automaton has 42355 states and 53301 transitions. Word has length 127 [2022-01-10 13:34:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:33,704 INFO L470 AbstractCegarLoop]: Abstraction has 42355 states and 53301 transitions. [2022-01-10 13:34:33,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 42355 states and 53301 transitions. [2022-01-10 13:34:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 13:34:33,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:33,715 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:33,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:34:33,715 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1501899619, now seen corresponding path program 1 times [2022-01-10 13:34:33,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:33,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21960414] [2022-01-10 13:34:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:33,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:33,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:33,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21960414] [2022-01-10 13:34:33,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21960414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:33,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:33,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:33,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240696703] [2022-01-10 13:34:33,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:33,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:33,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:33,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:33,766 INFO L87 Difference]: Start difference. First operand 42355 states and 53301 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:37,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:37,382 INFO L93 Difference]: Finished difference Result 118080 states and 145974 transitions. [2022-01-10 13:34:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:37,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-01-10 13:34:37,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:37,502 INFO L225 Difference]: With dead ends: 118080 [2022-01-10 13:34:37,502 INFO L226 Difference]: Without dead ends: 77910 [2022-01-10 13:34:37,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:37,545 INFO L933 BasicCegarLoop]: 4943 mSDtfsCounter, 449 mSDsluCounter, 4470 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 9413 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:37,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 9413 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77910 states. [2022-01-10 13:34:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77910 to 77910. [2022-01-10 13:34:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77910 states, 77908 states have (on average 1.2313626328490015) internal successors, (95933), 77909 states have internal predecessors, (95933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 95933 transitions. [2022-01-10 13:34:41,478 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 95933 transitions. Word has length 128 [2022-01-10 13:34:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:41,479 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 95933 transitions. [2022-01-10 13:34:41,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:34:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 95933 transitions. [2022-01-10 13:34:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 13:34:41,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:41,523 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:41,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 13:34:41,523 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:41,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1562361697, now seen corresponding path program 1 times [2022-01-10 13:34:41,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:41,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082118837] [2022-01-10 13:34:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:41,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:41,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:41,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082118837] [2022-01-10 13:34:41,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082118837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:41,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:41,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:41,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633586932] [2022-01-10 13:34:41,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:41,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:41,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:41,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:41,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:41,573 INFO L87 Difference]: Start difference. First operand 77910 states and 95933 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)