/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/systemc/token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:37:30,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:37:30,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:37:30,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 12:37:30,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:37:30,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:37:30,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:37:30,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:37:30,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:37:30,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:37:30,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:37:30,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:37:30,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:37:30,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:37:30,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:37:30,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:37:30,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 12:37:30,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:37:30,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:37:30,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:37:30,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:37:30,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:37:30,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:37:30,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:37:30,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:37:30,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:37:30,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:37:30,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:37:30,466 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 12:37:30,491 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:37:30,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:37:30,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:37:30,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:37:30,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:37:30,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:37:30,493 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:37:30,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:37:30,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:37:30,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:37:30,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:37:30,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:37:30,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:37:30,494 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:37:30,494 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:37:30,494 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:37:30,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:37:30,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:37:30,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:37:30,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:37:30,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:37:30,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:37:30,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:37:30,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:37:30,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:37:30,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:37:30,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:37:30,495 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:37:30,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:37:30,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:37:30,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:37:30,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:37:30,496 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:37:30,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:37:30,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:37:30,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:37:30,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:37:30,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:37:30,679 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:37:30,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.06.cil-2.c [2022-01-10 12:37:30,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67820a48e/ff5533dc76a14b388ab6a6689fc21483/FLAG3af9f3d23 [2022-01-10 12:37:31,084 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:37:31,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-2.c [2022-01-10 12:37:31,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67820a48e/ff5533dc76a14b388ab6a6689fc21483/FLAG3af9f3d23 [2022-01-10 12:37:31,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67820a48e/ff5533dc76a14b388ab6a6689fc21483 [2022-01-10 12:37:31,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:37:31,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:37:31,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:37:31,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:37:31,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:37:31,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213b26e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31, skipping insertion in model container [2022-01-10 12:37:31,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:37:31,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:37:31,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-2.c[671,684] [2022-01-10 12:37:31,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:37:31,716 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:37:31,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-2.c[671,684] [2022-01-10 12:37:31,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:37:31,793 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:37:31,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31 WrapperNode [2022-01-10 12:37:31,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:37:31,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:37:31,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:37:31,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:37:31,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,871 INFO L137 Inliner]: procedures = 40, calls = 49, calls flagged for inlining = 44, calls inlined = 113, statements flattened = 1650 [2022-01-10 12:37:31,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:37:31,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:37:31,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:37:31,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:37:31,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:37:31,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:37:31,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:37:31,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:37:31,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (1/1) ... [2022-01-10 12:37:31,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:37:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:37:31,984 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 12:37:32,001 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 12:37:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:37:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:37:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:37:32,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:37:32,136 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:37:32,137 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:37:32,945 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:37:32,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:37:32,959 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 12:37:32,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:37:32 BoogieIcfgContainer [2022-01-10 12:37:32,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:37:32,963 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:37:32,963 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:37:32,964 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:37:32,966 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:37:32" (1/1) ... [2022-01-10 12:37:33,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:37:33 BasicIcfg [2022-01-10 12:37:33,159 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:37:33,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:37:33,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:37:33,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:37:33,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:37:31" (1/4) ... [2022-01-10 12:37:33,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c57a28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:37:33, skipping insertion in model container [2022-01-10 12:37:33,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:37:31" (2/4) ... [2022-01-10 12:37:33,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c57a28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:37:33, skipping insertion in model container [2022-01-10 12:37:33,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:37:32" (3/4) ... [2022-01-10 12:37:33,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c57a28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:37:33, skipping insertion in model container [2022-01-10 12:37:33,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:37:33" (4/4) ... [2022-01-10 12:37:33,165 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-2.cTransformedIcfg [2022-01-10 12:37:33,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:37:33,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:37:33,217 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:37:33,225 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 12:37:33,225 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:37:33,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 688 states, 686 states have (on average 1.5247813411078717) internal successors, (1046), 687 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states 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 12:37:33,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:33,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:33,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:33,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:33,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1654984709, now seen corresponding path program 1 times [2022-01-10 12:37:33,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:33,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448921366] [2022-01-10 12:37:33,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:33,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:33,513 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 12:37:33,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:33,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448921366] [2022-01-10 12:37:33,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448921366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:33,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:33,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:33,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627830853] [2022-01-10 12:37:33,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:33,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:33,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:33,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:33,546 INFO L87 Difference]: Start difference. First operand has 688 states, 686 states have (on average 1.5247813411078717) internal successors, (1046), 687 states have internal predecessors, (1046), 0 states have call successors, (0), 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 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:33,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:33,635 INFO L93 Difference]: Finished difference Result 1361 states and 2068 transitions. [2022-01-10 12:37:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:33,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:33,670 INFO L225 Difference]: With dead ends: 1361 [2022-01-10 12:37:33,670 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:33,676 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 12:37:33,701 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 1008 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1016 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 12:37:33,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 1016 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:33,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4912023460410557) internal successors, (1017), 682 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states 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 12:37:33,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1017 transitions. [2022-01-10 12:37:33,769 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1017 transitions. Word has length 98 [2022-01-10 12:37:33,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:33,769 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1017 transitions. [2022-01-10 12:37:33,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1017 transitions. [2022-01-10 12:37:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:33,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:33,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:33,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:37:33,772 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:33,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1176003803, now seen corresponding path program 1 times [2022-01-10 12:37:33,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:33,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924757077] [2022-01-10 12:37:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:33,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:33,823 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 12:37:33,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:33,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924757077] [2022-01-10 12:37:33,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924757077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:33,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:33,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:33,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165213983] [2022-01-10 12:37:33,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:33,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:33,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:33,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:33,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:33,825 INFO L87 Difference]: Start difference. First operand 683 states and 1017 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:33,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:33,904 INFO L93 Difference]: Finished difference Result 1351 states and 2010 transitions. [2022-01-10 12:37:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:33,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:33,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:33,907 INFO L225 Difference]: With dead ends: 1351 [2022-01-10 12:37:33,907 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:33,909 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 12:37:33,910 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 998 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1007 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 12:37:33,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 1007 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:33,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4838709677419355) internal successors, (1012), 682 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 12:37:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1012 transitions. [2022-01-10 12:37:33,934 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1012 transitions. Word has length 98 [2022-01-10 12:37:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:33,935 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1012 transitions. [2022-01-10 12:37:33,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1012 transitions. [2022-01-10 12:37:33,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:33,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:33,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:33,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:37:33,937 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:33,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:33,938 INFO L85 PathProgramCache]: Analyzing trace with hash -949431301, now seen corresponding path program 1 times [2022-01-10 12:37:33,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:33,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106612870] [2022-01-10 12:37:33,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:33,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:33,985 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 12:37:33,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:33,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106612870] [2022-01-10 12:37:33,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106612870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:33,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:33,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:33,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820478601] [2022-01-10 12:37:33,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:33,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:33,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:33,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:33,987 INFO L87 Difference]: Start difference. First operand 683 states and 1012 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:34,014 INFO L93 Difference]: Finished difference Result 1350 states and 1999 transitions. [2022-01-10 12:37:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:34,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:34,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:34,016 INFO L225 Difference]: With dead ends: 1350 [2022-01-10 12:37:34,016 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:34,017 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 12:37:34,018 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 992 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1002 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 12:37:34,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 1002 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4765395894428153) internal successors, (1007), 682 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states 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 12:37:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1007 transitions. [2022-01-10 12:37:34,036 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1007 transitions. Word has length 98 [2022-01-10 12:37:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:34,036 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1007 transitions. [2022-01-10 12:37:34,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1007 transitions. [2022-01-10 12:37:34,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:34,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:34,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:34,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:37:34,038 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:34,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:34,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1891500251, now seen corresponding path program 1 times [2022-01-10 12:37:34,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:34,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880679701] [2022-01-10 12:37:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:34,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:34,076 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 12:37:34,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:34,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880679701] [2022-01-10 12:37:34,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880679701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:34,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:34,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:34,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806212888] [2022-01-10 12:37:34,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:34,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:34,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:34,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:34,078 INFO L87 Difference]: Start difference. First operand 683 states and 1007 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:34,108 INFO L93 Difference]: Finished difference Result 1349 states and 1988 transitions. [2022-01-10 12:37:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:34,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:34,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:34,110 INFO L225 Difference]: With dead ends: 1349 [2022-01-10 12:37:34,111 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:34,112 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 12:37:34,118 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 986 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 997 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 12:37:34,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 997 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.469208211143695) internal successors, (1002), 682 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states 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 12:37:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1002 transitions. [2022-01-10 12:37:34,137 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1002 transitions. Word has length 98 [2022-01-10 12:37:34,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:34,137 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1002 transitions. [2022-01-10 12:37:34,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,137 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1002 transitions. [2022-01-10 12:37:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:34,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:34,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:34,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:37:34,140 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:34,141 INFO L85 PathProgramCache]: Analyzing trace with hash 597669883, now seen corresponding path program 1 times [2022-01-10 12:37:34,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:34,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002616336] [2022-01-10 12:37:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:34,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:34,194 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 12:37:34,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:34,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002616336] [2022-01-10 12:37:34,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002616336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:34,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:34,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:34,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797769181] [2022-01-10 12:37:34,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:34,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:34,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:34,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:34,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:34,196 INFO L87 Difference]: Start difference. First operand 683 states and 1002 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:34,229 INFO L93 Difference]: Finished difference Result 1348 states and 1977 transitions. [2022-01-10 12:37:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:34,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:34,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:34,232 INFO L225 Difference]: With dead ends: 1348 [2022-01-10 12:37:34,232 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:34,232 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 12:37:34,234 INFO L933 BasicCegarLoop]: 992 mSDtfsCounter, 980 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 992 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 12:37:34,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 992 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:34,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:34,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4618768328445748) internal successors, (997), 682 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 12:37:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 997 transitions. [2022-01-10 12:37:34,260 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 997 transitions. Word has length 98 [2022-01-10 12:37:34,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:34,261 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 997 transitions. [2022-01-10 12:37:34,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 997 transitions. [2022-01-10 12:37:34,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:34,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:34,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:34,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:37:34,269 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1744091, now seen corresponding path program 1 times [2022-01-10 12:37:34,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:34,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789585368] [2022-01-10 12:37:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:34,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:34,322 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 12:37:34,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:34,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789585368] [2022-01-10 12:37:34,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789585368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:34,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:34,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:34,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783699650] [2022-01-10 12:37:34,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:34,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:34,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:34,325 INFO L87 Difference]: Start difference. First operand 683 states and 997 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:34,364 INFO L93 Difference]: Finished difference Result 1347 states and 1966 transitions. [2022-01-10 12:37:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:34,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:34,366 INFO L225 Difference]: With dead ends: 1347 [2022-01-10 12:37:34,366 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:34,368 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 12:37:34,368 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 974 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 987 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 12:37:34,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 987 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:34,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:34,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4545454545454546) internal successors, (992), 682 states have internal predecessors, (992), 0 states have call successors, (0), 0 states 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 12:37:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 992 transitions. [2022-01-10 12:37:34,461 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 992 transitions. Word has length 98 [2022-01-10 12:37:34,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:34,461 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 992 transitions. [2022-01-10 12:37:34,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 992 transitions. [2022-01-10 12:37:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:34,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:34,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:34,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:37:34,463 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash 675257339, now seen corresponding path program 1 times [2022-01-10 12:37:34,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:34,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407914197] [2022-01-10 12:37:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:34,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:34,502 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 12:37:34,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:34,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407914197] [2022-01-10 12:37:34,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407914197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:34,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:34,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:34,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991987749] [2022-01-10 12:37:34,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:34,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:34,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:34,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:34,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:34,505 INFO L87 Difference]: Start difference. First operand 683 states and 992 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:34,555 INFO L93 Difference]: Finished difference Result 1346 states and 1955 transitions. [2022-01-10 12:37:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:34,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:34,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:34,558 INFO L225 Difference]: With dead ends: 1346 [2022-01-10 12:37:34,559 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:34,560 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 12:37:34,560 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 887 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:34,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 1032 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:34,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:34,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.434017595307918) internal successors, (978), 682 states have internal predecessors, (978), 0 states have call successors, (0), 0 states 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 12:37:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 978 transitions. [2022-01-10 12:37:34,581 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 978 transitions. Word has length 98 [2022-01-10 12:37:34,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:34,581 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 978 transitions. [2022-01-10 12:37:34,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 978 transitions. [2022-01-10 12:37:34,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:34,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:34,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:34,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:37:34,582 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:34,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:34,582 INFO L85 PathProgramCache]: Analyzing trace with hash 182103386, now seen corresponding path program 1 times [2022-01-10 12:37:34,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:34,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572953732] [2022-01-10 12:37:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:34,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:34,611 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 12:37:34,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:34,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572953732] [2022-01-10 12:37:34,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572953732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:34,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:34,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:34,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856034087] [2022-01-10 12:37:34,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:34,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:34,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:34,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:34,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:34,613 INFO L87 Difference]: Start difference. First operand 683 states and 978 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:34,688 INFO L93 Difference]: Finished difference Result 1344 states and 1924 transitions. [2022-01-10 12:37:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:34,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:34,690 INFO L225 Difference]: With dead ends: 1344 [2022-01-10 12:37:34,690 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:34,691 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 12:37:34,691 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 872 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:34,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 1017 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4134897360703813) internal successors, (964), 682 states have internal predecessors, (964), 0 states have call successors, (0), 0 states 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 12:37:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 964 transitions. [2022-01-10 12:37:34,728 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 964 transitions. Word has length 98 [2022-01-10 12:37:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:34,728 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 964 transitions. [2022-01-10 12:37:34,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 964 transitions. [2022-01-10 12:37:34,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:34,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:34,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:34,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:37:34,729 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:34,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:34,730 INFO L85 PathProgramCache]: Analyzing trace with hash 500890937, now seen corresponding path program 1 times [2022-01-10 12:37:34,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:34,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315630990] [2022-01-10 12:37:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:34,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:34,782 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 12:37:34,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:34,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315630990] [2022-01-10 12:37:34,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315630990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:34,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:34,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:34,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536190368] [2022-01-10 12:37:34,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:34,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:34,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:34,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:34,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:34,784 INFO L87 Difference]: Start difference. First operand 683 states and 964 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:34,849 INFO L93 Difference]: Finished difference Result 1343 states and 1895 transitions. [2022-01-10 12:37:34,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:34,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:34,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:34,851 INFO L225 Difference]: With dead ends: 1343 [2022-01-10 12:37:34,852 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:34,852 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 12:37:34,854 INFO L933 BasicCegarLoop]: 936 mSDtfsCounter, 858 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:34,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1002 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.3929618768328447) internal successors, (950), 682 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 12:37:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 950 transitions. [2022-01-10 12:37:34,878 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 950 transitions. Word has length 98 [2022-01-10 12:37:34,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:34,878 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 950 transitions. [2022-01-10 12:37:34,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 950 transitions. [2022-01-10 12:37:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:34,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:34,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:34,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:37:34,882 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:34,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash 378040984, now seen corresponding path program 1 times [2022-01-10 12:37:34,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:34,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689329410] [2022-01-10 12:37:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:34,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:37:34,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:34,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689329410] [2022-01-10 12:37:34,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689329410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:34,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:34,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:34,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724411819] [2022-01-10 12:37:34,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:34,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:34,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:34,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:34,934 INFO L87 Difference]: Start difference. First operand 683 states and 950 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:34,990 INFO L93 Difference]: Finished difference Result 1342 states and 1866 transitions. [2022-01-10 12:37:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:34,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:34,992 INFO L225 Difference]: With dead ends: 1342 [2022-01-10 12:37:34,993 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:34,993 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 12:37:34,994 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 844 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:34,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 987 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.3724340175953078) internal successors, (936), 682 states have internal predecessors, (936), 0 states have call successors, (0), 0 states 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 12:37:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 936 transitions. [2022-01-10 12:37:35,027 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 936 transitions. Word has length 98 [2022-01-10 12:37:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:35,028 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 936 transitions. [2022-01-10 12:37:35,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 936 transitions. [2022-01-10 12:37:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:35,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:35,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:35,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:37:35,029 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:35,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:35,030 INFO L85 PathProgramCache]: Analyzing trace with hash -147734281, now seen corresponding path program 1 times [2022-01-10 12:37:35,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:35,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437244868] [2022-01-10 12:37:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:35,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:35,063 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 12:37:35,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:35,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437244868] [2022-01-10 12:37:35,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437244868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:35,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:35,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:35,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844104484] [2022-01-10 12:37:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:35,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:35,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:35,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:35,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:35,065 INFO L87 Difference]: Start difference. First operand 683 states and 936 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:35,124 INFO L93 Difference]: Finished difference Result 1341 states and 1837 transitions. [2022-01-10 12:37:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:35,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:35,127 INFO L225 Difference]: With dead ends: 1341 [2022-01-10 12:37:35,127 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:35,128 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 12:37:35,129 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 830 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:35,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 972 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:35,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.3519061583577712) internal successors, (922), 682 states have internal predecessors, (922), 0 states have call successors, (0), 0 states 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 12:37:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 922 transitions. [2022-01-10 12:37:35,159 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 922 transitions. Word has length 98 [2022-01-10 12:37:35,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:35,159 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 922 transitions. [2022-01-10 12:37:35,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 922 transitions. [2022-01-10 12:37:35,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:35,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:35,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:35,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:37:35,160 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1658280746, now seen corresponding path program 1 times [2022-01-10 12:37:35,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:35,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294702401] [2022-01-10 12:37:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:35,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:35,189 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 12:37:35,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:35,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294702401] [2022-01-10 12:37:35,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294702401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:35,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:35,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:35,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333667043] [2022-01-10 12:37:35,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:35,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:35,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:35,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:35,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:35,191 INFO L87 Difference]: Start difference. First operand 683 states and 922 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:35,250 INFO L93 Difference]: Finished difference Result 1340 states and 1808 transitions. [2022-01-10 12:37:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:35,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:35,253 INFO L225 Difference]: With dead ends: 1340 [2022-01-10 12:37:35,253 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:37:35,254 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 12:37:35,255 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 816 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:35,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 957 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:37:35,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 12:37:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.3313782991202345) internal successors, (908), 682 states have internal predecessors, (908), 0 states have call successors, (0), 0 states 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 12:37:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 908 transitions. [2022-01-10 12:37:35,285 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 908 transitions. Word has length 98 [2022-01-10 12:37:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:35,285 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 908 transitions. [2022-01-10 12:37:35,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 908 transitions. [2022-01-10 12:37:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:35,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:35,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:35,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:37:35,287 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:35,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash 652128693, now seen corresponding path program 1 times [2022-01-10 12:37:35,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:35,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437985638] [2022-01-10 12:37:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:35,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:35,327 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 12:37:35,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:35,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437985638] [2022-01-10 12:37:35,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437985638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:35,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:35,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:35,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220085412] [2022-01-10 12:37:35,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:35,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:35,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:35,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:35,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:35,328 INFO L87 Difference]: Start difference. First operand 683 states and 908 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:35,441 INFO L93 Difference]: Finished difference Result 1861 states and 2472 transitions. [2022-01-10 12:37:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:35,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:35,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:35,446 INFO L225 Difference]: With dead ends: 1861 [2022-01-10 12:37:35,446 INFO L226 Difference]: Without dead ends: 1213 [2022-01-10 12:37:35,447 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 12:37:35,448 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 776 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:35,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 1663 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2022-01-10 12:37:35,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1209. [2022-01-10 12:37:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 1.3228476821192052) internal successors, (1598), 1208 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states 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 12:37:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1598 transitions. [2022-01-10 12:37:35,513 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1598 transitions. Word has length 98 [2022-01-10 12:37:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:35,514 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1598 transitions. [2022-01-10 12:37:35,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1598 transitions. [2022-01-10 12:37:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:35,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:35,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:35,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:37:35,516 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:35,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:35,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1902129524, now seen corresponding path program 1 times [2022-01-10 12:37:35,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:35,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46650823] [2022-01-10 12:37:35,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:35,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:35,566 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 12:37:35,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:35,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46650823] [2022-01-10 12:37:35,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46650823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:35,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:35,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:37:35,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417417740] [2022-01-10 12:37:35,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:35,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:37:35,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:35,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:37:35,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:37:35,568 INFO L87 Difference]: Start difference. First operand 1209 states and 1598 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:35,821 INFO L93 Difference]: Finished difference Result 3419 states and 4519 transitions. [2022-01-10 12:37:35,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:37:35,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:35,828 INFO L225 Difference]: With dead ends: 3419 [2022-01-10 12:37:35,828 INFO L226 Difference]: Without dead ends: 2249 [2022-01-10 12:37:35,830 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 12:37:35,831 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 2840 mSDsluCounter, 3659 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2840 SdHoareTripleChecker+Valid, 4632 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:35,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2840 Valid, 4632 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:37:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2022-01-10 12:37:35,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1236. [2022-01-10 12:37:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.308502024291498) internal successors, (1616), 1235 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states 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 12:37:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1616 transitions. [2022-01-10 12:37:35,893 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1616 transitions. Word has length 98 [2022-01-10 12:37:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:35,893 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1616 transitions. [2022-01-10 12:37:35,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1616 transitions. [2022-01-10 12:37:35,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:35,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:35,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:35,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:37:35,895 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:35,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash 735433205, now seen corresponding path program 1 times [2022-01-10 12:37:35,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:35,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823181201] [2022-01-10 12:37:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:35,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:35,934 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 12:37:35,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:35,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823181201] [2022-01-10 12:37:35,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823181201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:35,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:35,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:35,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173759305] [2022-01-10 12:37:35,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:35,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:35,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:35,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:35,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:35,935 INFO L87 Difference]: Start difference. First operand 1236 states and 1616 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:36,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:36,064 INFO L93 Difference]: Finished difference Result 3501 states and 4581 transitions. [2022-01-10 12:37:36,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:36,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:36,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:36,071 INFO L225 Difference]: With dead ends: 3501 [2022-01-10 12:37:36,071 INFO L226 Difference]: Without dead ends: 2278 [2022-01-10 12:37:36,074 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 12:37:36,075 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 763 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1682 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 12:37:36,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 1682 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2022-01-10 12:37:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2276. [2022-01-10 12:37:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 2275 states have (on average 1.3094505494505495) internal successors, (2979), 2275 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states 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 12:37:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2979 transitions. [2022-01-10 12:37:36,193 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2979 transitions. Word has length 98 [2022-01-10 12:37:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:36,193 INFO L470 AbstractCegarLoop]: Abstraction has 2276 states and 2979 transitions. [2022-01-10 12:37:36,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2979 transitions. [2022-01-10 12:37:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:36,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:36,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:36,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:37:36,194 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:36,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:36,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1428534902, now seen corresponding path program 1 times [2022-01-10 12:37:36,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:36,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595572855] [2022-01-10 12:37:36,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:36,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:36,243 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 12:37:36,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:36,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595572855] [2022-01-10 12:37:36,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595572855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:36,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:36,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:36,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663627239] [2022-01-10 12:37:36,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:36,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:36,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:36,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:36,248 INFO L87 Difference]: Start difference. First operand 2276 states and 2979 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:36,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:36,439 INFO L93 Difference]: Finished difference Result 4486 states and 5869 transitions. [2022-01-10 12:37:36,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:36,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:36,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:36,446 INFO L225 Difference]: With dead ends: 4486 [2022-01-10 12:37:36,447 INFO L226 Difference]: Without dead ends: 2231 [2022-01-10 12:37:36,449 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 12:37:36,449 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 738 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:36,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 930 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2022-01-10 12:37:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2231. [2022-01-10 12:37:36,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2230 states have (on average 1.295964125560538) internal successors, (2890), 2230 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states 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 12:37:36,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2890 transitions. [2022-01-10 12:37:36,605 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2890 transitions. Word has length 98 [2022-01-10 12:37:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:36,605 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 2890 transitions. [2022-01-10 12:37:36,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:36,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2890 transitions. [2022-01-10 12:37:36,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:37:36,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:36,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:37:36,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:37:36,607 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:36,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1639885815, now seen corresponding path program 1 times [2022-01-10 12:37:36,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:36,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433253996] [2022-01-10 12:37:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:36,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:36,669 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 12:37:36,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433253996] [2022-01-10 12:37:36,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433253996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:36,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:36,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:37:36,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366378358] [2022-01-10 12:37:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:36,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:36,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:36,671 INFO L87 Difference]: Start difference. First operand 2231 states and 2890 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:36,995 INFO L93 Difference]: Finished difference Result 6528 states and 8467 transitions. [2022-01-10 12:37:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:37:36,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:37,010 INFO L225 Difference]: With dead ends: 6528 [2022-01-10 12:37:37,011 INFO L226 Difference]: Without dead ends: 4325 [2022-01-10 12:37:37,014 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 12:37:37,014 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 758 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:37,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1617 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2022-01-10 12:37:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4129. [2022-01-10 12:37:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4129 states, 4128 states have (on average 1.2911821705426356) internal successors, (5330), 4128 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states 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 12:37:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 5330 transitions. [2022-01-10 12:37:37,285 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 5330 transitions. Word has length 98 [2022-01-10 12:37:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:37,286 INFO L470 AbstractCegarLoop]: Abstraction has 4129 states and 5330 transitions. [2022-01-10 12:37:37,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 12:37:37,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 5330 transitions. [2022-01-10 12:37:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 12:37:37,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:37,289 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] [2022-01-10 12:37:37,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:37:37,290 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:37,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2023748834, now seen corresponding path program 1 times [2022-01-10 12:37:37,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:37,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54880001] [2022-01-10 12:37:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:37,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:37,348 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 12:37:37,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:37,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54880001] [2022-01-10 12:37:37,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54880001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:37,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:37,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:37,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105852795] [2022-01-10 12:37:37,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:37,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:37,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:37,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:37,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:37,351 INFO L87 Difference]: Start difference. First operand 4129 states and 5330 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 12:37:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:37,711 INFO L93 Difference]: Finished difference Result 11938 states and 15331 transitions. [2022-01-10 12:37:37,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:37,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-10 12:37:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:37,743 INFO L225 Difference]: With dead ends: 11938 [2022-01-10 12:37:37,743 INFO L226 Difference]: Without dead ends: 7898 [2022-01-10 12:37:37,748 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 12:37:37,748 INFO L933 BasicCegarLoop]: 1275 mSDtfsCounter, 633 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 2134 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 12:37:37,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 2134 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:37,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2022-01-10 12:37:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7896. [2022-01-10 12:37:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7896 states, 7895 states have (on average 1.2761241291956935) internal successors, (10075), 7895 states have internal predecessors, (10075), 0 states have call successors, (0), 0 states 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 12:37:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 10075 transitions. [2022-01-10 12:37:38,156 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 10075 transitions. Word has length 159 [2022-01-10 12:37:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:38,156 INFO L470 AbstractCegarLoop]: Abstraction has 7896 states and 10075 transitions. [2022-01-10 12:37:38,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 12:37:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 10075 transitions. [2022-01-10 12:37:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 12:37:38,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:38,161 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] [2022-01-10 12:37:38,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:37:38,161 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1965583933, now seen corresponding path program 1 times [2022-01-10 12:37:38,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:38,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459611725] [2022-01-10 12:37:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:38,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:38,187 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 12:37:38,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:38,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459611725] [2022-01-10 12:37:38,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459611725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:38,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:38,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:38,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387833885] [2022-01-10 12:37:38,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:38,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:38,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:38,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:38,189 INFO L87 Difference]: Start difference. First operand 7896 states and 10075 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 12:37:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:38,490 INFO L93 Difference]: Finished difference Result 13735 states and 17518 transitions. [2022-01-10 12:37:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:38,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 159 [2022-01-10 12:37:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:38,500 INFO L225 Difference]: With dead ends: 13735 [2022-01-10 12:37:38,500 INFO L226 Difference]: Without dead ends: 5928 [2022-01-10 12:37:38,507 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 12:37:38,508 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 873 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 877 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 12:37:38,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 877 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5928 states. [2022-01-10 12:37:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5928 to 5928. [2022-01-10 12:37:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5928 states, 5927 states have (on average 1.2736628985996288) internal successors, (7549), 5927 states have internal predecessors, (7549), 0 states have call successors, (0), 0 states 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 12:37:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5928 states to 5928 states and 7549 transitions. [2022-01-10 12:37:38,769 INFO L78 Accepts]: Start accepts. Automaton has 5928 states and 7549 transitions. Word has length 159 [2022-01-10 12:37:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:38,769 INFO L470 AbstractCegarLoop]: Abstraction has 5928 states and 7549 transitions. [2022-01-10 12:37:38,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 12:37:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states and 7549 transitions. [2022-01-10 12:37:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 12:37:38,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:38,772 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] [2022-01-10 12:37:38,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:37:38,772 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:38,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1803957582, now seen corresponding path program 1 times [2022-01-10 12:37:38,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:38,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717967986] [2022-01-10 12:37:38,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:38,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:38,838 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 12:37:38,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:38,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717967986] [2022-01-10 12:37:38,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717967986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:38,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:38,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:38,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000411841] [2022-01-10 12:37:38,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:38,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:38,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:38,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:38,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:38,839 INFO L87 Difference]: Start difference. First operand 5928 states and 7549 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 12:37:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:39,394 INFO L93 Difference]: Finished difference Result 17350 states and 22060 transitions. [2022-01-10 12:37:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:39,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-01-10 12:37:39,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:39,411 INFO L225 Difference]: With dead ends: 17350 [2022-01-10 12:37:39,411 INFO L226 Difference]: Without dead ends: 11511 [2022-01-10 12:37:39,418 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 12:37:39,419 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 775 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:39,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1922 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:39,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11511 states. [2022-01-10 12:37:39,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11511 to 11125. [2022-01-10 12:37:40,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11125 states, 11124 states have (on average 1.267529665587918) internal successors, (14100), 11124 states have internal predecessors, (14100), 0 states have call successors, (0), 0 states 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 12:37:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11125 states to 11125 states and 14100 transitions. [2022-01-10 12:37:40,040 INFO L78 Accepts]: Start accepts. Automaton has 11125 states and 14100 transitions. Word has length 160 [2022-01-10 12:37:40,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:40,040 INFO L470 AbstractCegarLoop]: Abstraction has 11125 states and 14100 transitions. [2022-01-10 12:37:40,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 12:37:40,040 INFO L276 IsEmpty]: Start isEmpty. Operand 11125 states and 14100 transitions. [2022-01-10 12:37:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 12:37:40,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:40,045 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] [2022-01-10 12:37:40,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:37:40,046 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1147829651, now seen corresponding path program 1 times [2022-01-10 12:37:40,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:40,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646648435] [2022-01-10 12:37:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:40,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:40,069 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 12:37:40,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:40,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646648435] [2022-01-10 12:37:40,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646648435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:40,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:40,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:40,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711959943] [2022-01-10 12:37:40,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:40,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:40,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:40,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:40,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:40,071 INFO L87 Difference]: Start difference. First operand 11125 states and 14100 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 12:37:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:40,504 INFO L93 Difference]: Finished difference Result 22123 states and 28049 transitions. [2022-01-10 12:37:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:40,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 160 [2022-01-10 12:37:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:40,522 INFO L225 Difference]: With dead ends: 22123 [2022-01-10 12:37:40,522 INFO L226 Difference]: Without dead ends: 11043 [2022-01-10 12:37:40,532 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 12:37:40,533 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 871 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 876 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 12:37:40,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:40,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11043 states. [2022-01-10 12:37:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11043 to 11043. [2022-01-10 12:37:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11043 states, 11042 states have (on average 1.2680673790979895) internal successors, (14002), 11042 states have internal predecessors, (14002), 0 states have call successors, (0), 0 states 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 12:37:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11043 states to 11043 states and 14002 transitions. [2022-01-10 12:37:41,049 INFO L78 Accepts]: Start accepts. Automaton has 11043 states and 14002 transitions. Word has length 160 [2022-01-10 12:37:41,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:41,049 INFO L470 AbstractCegarLoop]: Abstraction has 11043 states and 14002 transitions. [2022-01-10 12:37:41,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 12:37:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 11043 states and 14002 transitions. [2022-01-10 12:37:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 12:37:41,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:41,054 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] [2022-01-10 12:37:41,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:37:41,054 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:41,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:41,055 INFO L85 PathProgramCache]: Analyzing trace with hash -713783413, now seen corresponding path program 1 times [2022-01-10 12:37:41,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:41,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567441389] [2022-01-10 12:37:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:41,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:41,091 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 12:37:41,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:41,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567441389] [2022-01-10 12:37:41,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567441389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:41,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:41,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:41,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738821699] [2022-01-10 12:37:41,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:41,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:41,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:41,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:41,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:41,093 INFO L87 Difference]: Start difference. First operand 11043 states and 14002 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 12:37:42,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:42,111 INFO L93 Difference]: Finished difference Result 32248 states and 40851 transitions. [2022-01-10 12:37:42,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:42,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-01-10 12:37:42,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:42,248 INFO L225 Difference]: With dead ends: 32248 [2022-01-10 12:37:42,248 INFO L226 Difference]: Without dead ends: 21294 [2022-01-10 12:37:42,260 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 12:37:42,261 INFO L933 BasicCegarLoop]: 1075 mSDtfsCounter, 775 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:42,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1921 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:42,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21294 states. [2022-01-10 12:37:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21294 to 20692. [2022-01-10 12:37:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20692 states, 20691 states have (on average 1.2637861872311633) internal successors, (26149), 20691 states have internal predecessors, (26149), 0 states have call successors, (0), 0 states 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 12:37:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20692 states to 20692 states and 26149 transitions. [2022-01-10 12:37:43,152 INFO L78 Accepts]: Start accepts. Automaton has 20692 states and 26149 transitions. Word has length 161 [2022-01-10 12:37:43,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:43,153 INFO L470 AbstractCegarLoop]: Abstraction has 20692 states and 26149 transitions. [2022-01-10 12:37:43,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 12:37:43,153 INFO L276 IsEmpty]: Start isEmpty. Operand 20692 states and 26149 transitions. [2022-01-10 12:37:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 12:37:43,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:43,162 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] [2022-01-10 12:37:43,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:37:43,163 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash -659666520, now seen corresponding path program 1 times [2022-01-10 12:37:43,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:43,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528692604] [2022-01-10 12:37:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:43,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:43,187 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 12:37:43,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:43,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528692604] [2022-01-10 12:37:43,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528692604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:43,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:43,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:43,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117297691] [2022-01-10 12:37:43,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:43,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:43,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:43,189 INFO L87 Difference]: Start difference. First operand 20692 states and 26149 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 12:37:44,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:44,036 INFO L93 Difference]: Finished difference Result 41251 states and 52141 transitions. [2022-01-10 12:37:44,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:44,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-01-10 12:37:44,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:44,058 INFO L225 Difference]: With dead ends: 41251 [2022-01-10 12:37:44,058 INFO L226 Difference]: Without dead ends: 20611 [2022-01-10 12:37:44,073 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 12:37:44,073 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 869 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 875 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 12:37:44,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 875 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20611 states. [2022-01-10 12:37:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20611 to 20611. [2022-01-10 12:37:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20611 states, 20610 states have (on average 1.2640950994662785) internal successors, (26053), 20610 states have internal predecessors, (26053), 0 states have call successors, (0), 0 states 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 12:37:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20611 states to 20611 states and 26053 transitions. [2022-01-10 12:37:45,139 INFO L78 Accepts]: Start accepts. Automaton has 20611 states and 26053 transitions. Word has length 161 [2022-01-10 12:37:45,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:45,139 INFO L470 AbstractCegarLoop]: Abstraction has 20611 states and 26053 transitions. [2022-01-10 12:37:45,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 12:37:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 20611 states and 26053 transitions. [2022-01-10 12:37:45,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 12:37:45,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:45,148 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] [2022-01-10 12:37:45,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:37:45,149 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash 10036739, now seen corresponding path program 1 times [2022-01-10 12:37:45,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:45,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348389349] [2022-01-10 12:37:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:45,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:45,185 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 12:37:45,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:45,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348389349] [2022-01-10 12:37:45,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348389349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:45,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:45,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:45,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507094728] [2022-01-10 12:37:45,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:45,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:45,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:45,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:45,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:45,187 INFO L87 Difference]: Start difference. First operand 20611 states and 26053 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:46,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:46,972 INFO L93 Difference]: Finished difference Result 59879 states and 75628 transitions. [2022-01-10 12:37:46,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:46,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-01-10 12:37:46,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:47,025 INFO L225 Difference]: With dead ends: 59879 [2022-01-10 12:37:47,026 INFO L226 Difference]: Without dead ends: 39357 [2022-01-10 12:37:47,059 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 12:37:47,059 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 775 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:47,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1902 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39357 states. [2022-01-10 12:37:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39357 to 38491. [2022-01-10 12:37:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38491 states, 38490 states have (on average 1.2604312808521694) internal successors, (48514), 38490 states have internal predecessors, (48514), 0 states have call successors, (0), 0 states 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 12:37:48,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 48514 transitions. [2022-01-10 12:37:48,902 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 48514 transitions. Word has length 162 [2022-01-10 12:37:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:48,903 INFO L470 AbstractCegarLoop]: Abstraction has 38491 states and 48514 transitions. [2022-01-10 12:37:48,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 48514 transitions. [2022-01-10 12:37:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 12:37:48,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:48,919 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] [2022-01-10 12:37:48,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 12:37:48,919 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:48,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1110721380, now seen corresponding path program 1 times [2022-01-10 12:37:48,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:48,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711854913] [2022-01-10 12:37:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:48,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:48,941 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 12:37:48,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:48,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711854913] [2022-01-10 12:37:48,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711854913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:48,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:48,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:48,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31473975] [2022-01-10 12:37:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:48,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:48,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:48,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:48,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:48,943 INFO L87 Difference]: Start difference. First operand 38491 states and 48514 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:51,136 INFO L93 Difference]: Finished difference Result 76843 states and 96865 transitions. [2022-01-10 12:37:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-01-10 12:37:51,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:51,190 INFO L225 Difference]: With dead ends: 76843 [2022-01-10 12:37:51,200 INFO L226 Difference]: Without dead ends: 38411 [2022-01-10 12:37:51,236 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 12:37:51,237 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 867 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 874 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 12:37:51,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 874 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:37:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38411 states. [2022-01-10 12:37:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38411 to 38411. [2022-01-10 12:37:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38411 states, 38410 states have (on average 1.260609216349909) internal successors, (48420), 38410 states have internal predecessors, (48420), 0 states have call successors, (0), 0 states 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 12:37:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38411 states to 38411 states and 48420 transitions. [2022-01-10 12:37:53,290 INFO L78 Accepts]: Start accepts. Automaton has 38411 states and 48420 transitions. Word has length 162 [2022-01-10 12:37:53,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:37:53,290 INFO L470 AbstractCegarLoop]: Abstraction has 38411 states and 48420 transitions. [2022-01-10 12:37:53,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:37:53,291 INFO L276 IsEmpty]: Start isEmpty. Operand 38411 states and 48420 transitions. [2022-01-10 12:37:53,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 12:37:53,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:37:53,306 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] [2022-01-10 12:37:53,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 12:37:53,307 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:37:53,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:37:53,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1112438019, now seen corresponding path program 1 times [2022-01-10 12:37:53,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:37:53,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846750387] [2022-01-10 12:37:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:37:53,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:37:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:37:53,376 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 12:37:53,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:37:53,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846750387] [2022-01-10 12:37:53,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846750387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:37:53,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:37:53,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:37:53,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241858057] [2022-01-10 12:37:53,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:37:53,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:37:53,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:37:53,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:37:53,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:37:53,378 INFO L87 Difference]: Start difference. First operand 38411 states and 48420 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 12:37:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:37:56,673 INFO L93 Difference]: Finished difference Result 110786 states and 139521 transitions. [2022-01-10 12:37:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:37:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2022-01-10 12:37:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:37:56,809 INFO L225 Difference]: With dead ends: 110786 [2022-01-10 12:37:56,810 INFO L226 Difference]: Without dead ends: 72464 [2022-01-10 12:37:56,868 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 12:37:56,869 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 775 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:37:56,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1865 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:37:56,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72464 states. [2022-01-10 12:38:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72464 to 71406. [2022-01-10 12:38:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71406 states, 71405 states have (on average 1.2569287864995449) internal successors, (89751), 71405 states have internal predecessors, (89751), 0 states have call successors, (0), 0 states 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 12:38:00,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71406 states to 71406 states and 89751 transitions. [2022-01-10 12:38:00,565 INFO L78 Accepts]: Start accepts. Automaton has 71406 states and 89751 transitions. Word has length 163 [2022-01-10 12:38:00,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:38:00,566 INFO L470 AbstractCegarLoop]: Abstraction has 71406 states and 89751 transitions. [2022-01-10 12:38:00,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 12:38:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand 71406 states and 89751 transitions. [2022-01-10 12:38:00,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 12:38:00,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:38:00,593 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] [2022-01-10 12:38:00,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 12:38:00,593 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:38:00,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:38:00,594 INFO L85 PathProgramCache]: Analyzing trace with hash -66563430, now seen corresponding path program 1 times [2022-01-10 12:38:00,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:38:00,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168262612] [2022-01-10 12:38:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:38:00,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:38:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:38:00,617 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 12:38:00,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:38:00,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168262612] [2022-01-10 12:38:00,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168262612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:38:00,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:38:00,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:38:00,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204156557] [2022-01-10 12:38:00,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:38:00,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:38:00,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:38:00,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:38:00,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:38:00,618 INFO L87 Difference]: Start difference. First operand 71406 states and 89751 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 12:38:04,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:38:04,336 INFO L93 Difference]: Finished difference Result 142667 states and 179333 transitions. [2022-01-10 12:38:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:38:04,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 163 [2022-01-10 12:38:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:38:04,465 INFO L225 Difference]: With dead ends: 142667 [2022-01-10 12:38:04,466 INFO L226 Difference]: Without dead ends: 71327 [2022-01-10 12:38:04,526 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 12:38:04,526 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 865 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 873 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 12:38:04,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 873 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:38:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71327 states. [2022-01-10 12:38:08,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71327 to 71327. [2022-01-10 12:38:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71327 states, 71326 states have (on average 1.2570310966547964) internal successors, (89659), 71326 states have internal predecessors, (89659), 0 states have call successors, (0), 0 states 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 12:38:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71327 states to 71327 states and 89659 transitions. [2022-01-10 12:38:08,443 INFO L78 Accepts]: Start accepts. Automaton has 71327 states and 89659 transitions. Word has length 163 [2022-01-10 12:38:08,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:38:08,443 INFO L470 AbstractCegarLoop]: Abstraction has 71327 states and 89659 transitions. [2022-01-10 12:38:08,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 12:38:08,443 INFO L276 IsEmpty]: Start isEmpty. Operand 71327 states and 89659 transitions. [2022-01-10 12:38:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 12:38:08,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:38:08,466 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] [2022-01-10 12:38:08,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 12:38:08,466 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:38:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:38:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2073637425, now seen corresponding path program 1 times [2022-01-10 12:38:08,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:38:08,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86469102] [2022-01-10 12:38:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:38:08,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:38:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:38:08,537 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 12:38:08,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:38:08,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86469102] [2022-01-10 12:38:08,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86469102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:38:08,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:38:08,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:38:08,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627494231] [2022-01-10 12:38:08,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:38:08,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:38:08,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:38:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:38:08,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:38:08,539 INFO L87 Difference]: Start difference. First operand 71327 states and 89659 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 12:38:14,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:38:14,844 INFO L93 Difference]: Finished difference Result 203865 states and 255838 transitions. [2022-01-10 12:38:14,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:38:14,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-10 12:38:14,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:38:15,089 INFO L225 Difference]: With dead ends: 203865 [2022-01-10 12:38:15,089 INFO L226 Difference]: Without dead ends: 132627 [2022-01-10 12:38:15,184 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 12:38:15,186 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 774 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:38:15,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 1809 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:38:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132627 states. [2022-01-10 12:38:22,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132627 to 131857. [2022-01-10 12:38:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131857 states, 131856 states have (on average 1.2537010071593253) internal successors, (165308), 131856 states have internal predecessors, (165308), 0 states have call successors, (0), 0 states 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 12:38:22,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131857 states to 131857 states and 165308 transitions. [2022-01-10 12:38:22,726 INFO L78 Accepts]: Start accepts. Automaton has 131857 states and 165308 transitions. Word has length 164 [2022-01-10 12:38:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:38:22,727 INFO L470 AbstractCegarLoop]: Abstraction has 131857 states and 165308 transitions. [2022-01-10 12:38:22,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 12:38:22,727 INFO L276 IsEmpty]: Start isEmpty. Operand 131857 states and 165308 transitions. [2022-01-10 12:38:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 12:38:22,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:38:22,772 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] [2022-01-10 12:38:22,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 12:38:22,773 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:38:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:38:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1417657937, now seen corresponding path program 1 times [2022-01-10 12:38:22,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:38:22,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957740224] [2022-01-10 12:38:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:38:22,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:38:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:38:22,838 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 12:38:22,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:38:22,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957740224] [2022-01-10 12:38:22,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957740224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:38:22,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:38:22,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:38:22,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408859998] [2022-01-10 12:38:22,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:38:22,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:38:22,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:38:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:38:22,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:38:22,840 INFO L87 Difference]: Start difference. First operand 131857 states and 165308 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:38:30,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:38:30,076 INFO L93 Difference]: Finished difference Result 263563 states and 330441 transitions. [2022-01-10 12:38:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:38:30,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-01-10 12:38:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:38:30,367 INFO L225 Difference]: With dead ends: 263563 [2022-01-10 12:38:30,367 INFO L226 Difference]: Without dead ends: 131779 [2022-01-10 12:38:30,520 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 12:38:30,520 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 863 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 872 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 12:38:30,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 872 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:38:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131779 states. [2022-01-10 12:38:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131779 to 131779. [2022-01-10 12:38:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131779 states, 131778 states have (on average 1.2537601117030157) internal successors, (165218), 131778 states have internal predecessors, (165218), 0 states have call successors, (0), 0 states 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 12:38:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131779 states to 131779 states and 165218 transitions. [2022-01-10 12:38:38,376 INFO L78 Accepts]: Start accepts. Automaton has 131779 states and 165218 transitions. Word has length 164 [2022-01-10 12:38:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:38:38,377 INFO L470 AbstractCegarLoop]: Abstraction has 131779 states and 165218 transitions. [2022-01-10 12:38:38,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:38:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 131779 states and 165218 transitions. [2022-01-10 12:38:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 12:38:38,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:38:38,438 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 12:38:38,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 12:38:38,438 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:38:38,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:38:38,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1917819697, now seen corresponding path program 1 times [2022-01-10 12:38:38,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:38:38,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481902739] [2022-01-10 12:38:38,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:38:38,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:38:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:38:38,521 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 12:38:38,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:38:38,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481902739] [2022-01-10 12:38:38,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481902739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:38:38,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:38:38,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:38:38,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768452662] [2022-01-10 12:38:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:38:38,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:38:38,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:38:38,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:38:38,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:38:38,522 INFO L87 Difference]: Start difference. First operand 131779 states and 165218 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 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)