/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_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:02:28,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:02:28,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:02:28,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 20:02:28,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:02:28,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:02:28,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:02:28,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:02:28,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:02:28,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:02:28,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:02:28,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:02:28,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:02:28,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:02:28,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:02:28,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:02:28,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:02:28,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:02:28,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:02:28,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:02:28,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 20:02:28,568 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:02:28,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:02:28,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:02:28,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:02:28,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:02:28,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:02:28,570 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:02:28,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:02:28,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:02:28,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:02:28,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:02:28,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:02:28,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:02:28,572 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:02:28,572 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:02:28,572 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:02:28,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:02:28,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:02:28,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:02:28,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:02:28,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:02:28,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:02:28,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:02:28,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:02:28,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:02:28,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:02:28,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:02:28,575 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:02:28,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:02:28,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:02:28,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:02:28,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:02:28,577 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:02:28,577 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:02:28,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:02:28,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:02:28,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:02:28,850 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:02:28,851 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:02:28,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-01-10 20:02:28,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a4c71ad/4317a4d7cf534f9fbfa617e73386fc6d/FLAG813660320 [2022-01-10 20:02:29,349 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:02:29,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-01-10 20:02:29,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a4c71ad/4317a4d7cf534f9fbfa617e73386fc6d/FLAG813660320 [2022-01-10 20:02:29,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a4c71ad/4317a4d7cf534f9fbfa617e73386fc6d [2022-01-10 20:02:29,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:02:29,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:02:29,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:02:29,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:02:29,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:02:29,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:02:29" (1/1) ... [2022-01-10 20:02:29,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d35d802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:29, skipping insertion in model container [2022-01-10 20:02:29,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:02:29" (1/1) ... [2022-01-10 20:02:29,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:02:29,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:02:29,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[914,927] [2022-01-10 20:02:30,024 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2022-01-10 20:02:30,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:02:30,106 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:02:30,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[914,927] [2022-01-10 20:02:30,142 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2022-01-10 20:02:30,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:02:30,199 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:02:30,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30 WrapperNode [2022-01-10 20:02:30,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:02:30,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:02:30,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:02:30,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:02:30,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (1/1) ... [2022-01-10 20:02:30,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (1/1) ... [2022-01-10 20:02:30,288 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 64, calls inlined = 104, statements flattened = 1363 [2022-01-10 20:02:30,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:02:30,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:02:30,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:02:30,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:02:30,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (1/1) ... [2022-01-10 20:02:30,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (1/1) ... [2022-01-10 20:02:30,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (1/1) ... [2022-01-10 20:02:30,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (1/1) ... [2022-01-10 20:02:30,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (1/1) ... [2022-01-10 20:02:30,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (1/1) ... [2022-01-10 20:02:30,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (1/1) ... [2022-01-10 20:02:30,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:02:30,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:02:30,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:02:30,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:02:30,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (1/1) ... [2022-01-10 20:02:30,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:02:30,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:02:30,425 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 20:02:30,446 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 20:02:30,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:02:30,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:02:30,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:02:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:02:30,586 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:02:30,587 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:02:31,437 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:02:31,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:02:31,449 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 20:02:31,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:02:31 BoogieIcfgContainer [2022-01-10 20:02:31,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:02:31,453 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:02:31,453 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:02:31,454 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:02:31,457 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:02:31" (1/1) ... [2022-01-10 20:02:31,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:02:31 BasicIcfg [2022-01-10 20:02:31,763 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:02:31,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:02:31,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:02:31,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:02:31,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:02:29" (1/4) ... [2022-01-10 20:02:31,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1c4311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:02:31, skipping insertion in model container [2022-01-10 20:02:31,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:30" (2/4) ... [2022-01-10 20:02:31,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1c4311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:02:31, skipping insertion in model container [2022-01-10 20:02:31,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:02:31" (3/4) ... [2022-01-10 20:02:31,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1c4311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:02:31, skipping insertion in model container [2022-01-10 20:02:31,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:02:31" (4/4) ... [2022-01-10 20:02:31,772 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-1.cTransformedIcfg [2022-01-10 20:02:31,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:02:31,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 20:02:31,830 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:02:31,837 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 20:02:31,837 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 20:02:31,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 535 states, 531 states have (on average 1.5423728813559323) internal successors, (819), 534 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 20:02:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 20:02:31,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:31,873 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] [2022-01-10 20:02:31,874 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:31,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:31,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1687130859, now seen corresponding path program 1 times [2022-01-10 20:02:31,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:31,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957429517] [2022-01-10 20:02:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:31,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:32,201 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 20:02:32,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:32,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957429517] [2022-01-10 20:02:32,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957429517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:32,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:32,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:32,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385925369] [2022-01-10 20:02:32,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:32,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:32,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:32,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:32,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:32,245 INFO L87 Difference]: Start difference. First operand has 535 states, 531 states have (on average 1.5423728813559323) internal successors, (819), 534 states have internal predecessors, (819), 0 states have call successors, (0), 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 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 20:02:32,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:32,437 INFO L93 Difference]: Finished difference Result 1087 states and 1660 transitions. [2022-01-10 20:02:32,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:32,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 20:02:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:32,458 INFO L225 Difference]: With dead ends: 1087 [2022-01-10 20:02:32,458 INFO L226 Difference]: Without dead ends: 619 [2022-01-10 20:02:32,467 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 20:02:32,470 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 124 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:32,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1544 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:02:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-01-10 20:02:32,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 615. [2022-01-10 20:02:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 612 states have (on average 1.4787581699346406) internal successors, (905), 614 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 20:02:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 905 transitions. [2022-01-10 20:02:32,573 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 905 transitions. Word has length 44 [2022-01-10 20:02:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:32,574 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 905 transitions. [2022-01-10 20:02:32,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 20:02:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 905 transitions. [2022-01-10 20:02:32,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 20:02:32,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:32,580 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] [2022-01-10 20:02:32,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:02:32,581 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:32,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2047872109, now seen corresponding path program 1 times [2022-01-10 20:02:32,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:32,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437691820] [2022-01-10 20:02:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:32,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:32,693 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 20:02:32,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:32,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437691820] [2022-01-10 20:02:32,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437691820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:32,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:32,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:32,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905710670] [2022-01-10 20:02:32,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:32,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:32,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:32,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:32,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:32,700 INFO L87 Difference]: Start difference. First operand 615 states and 905 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 20:02:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:32,782 INFO L93 Difference]: Finished difference Result 901 states and 1303 transitions. [2022-01-10 20:02:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:32,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 20:02:32,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:32,787 INFO L225 Difference]: With dead ends: 901 [2022-01-10 20:02:32,787 INFO L226 Difference]: Without dead ends: 771 [2022-01-10 20:02:32,789 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 20:02:32,790 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 743 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:32,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 898 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:32,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-01-10 20:02:32,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 767. [2022-01-10 20:02:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 764 states have (on average 1.4541884816753927) internal successors, (1111), 766 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states 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 20:02:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1111 transitions. [2022-01-10 20:02:32,830 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1111 transitions. Word has length 44 [2022-01-10 20:02:32,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:32,831 INFO L470 AbstractCegarLoop]: Abstraction has 767 states and 1111 transitions. [2022-01-10 20:02:32,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 20:02:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1111 transitions. [2022-01-10 20:02:32,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 20:02:32,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:32,839 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] [2022-01-10 20:02:32,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:02:32,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:32,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:32,844 INFO L85 PathProgramCache]: Analyzing trace with hash 285852118, now seen corresponding path program 1 times [2022-01-10 20:02:32,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:32,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344019944] [2022-01-10 20:02:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:32,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:32,930 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 20:02:32,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:32,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344019944] [2022-01-10 20:02:32,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344019944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:32,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:32,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:32,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268233274] [2022-01-10 20:02:32,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:32,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:32,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:32,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:32,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:32,933 INFO L87 Difference]: Start difference. First operand 767 states and 1111 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 20:02:32,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:32,999 INFO L93 Difference]: Finished difference Result 1315 states and 1871 transitions. [2022-01-10 20:02:32,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:32,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 20:02:33,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:33,005 INFO L225 Difference]: With dead ends: 1315 [2022-01-10 20:02:33,005 INFO L226 Difference]: Without dead ends: 980 [2022-01-10 20:02:33,009 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 20:02:33,012 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 94 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:33,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 1494 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:33,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-01-10 20:02:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 966. [2022-01-10 20:02:33,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 963 states have (on average 1.4319833852544133) internal successors, (1379), 965 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 20:02:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1379 transitions. [2022-01-10 20:02:33,050 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1379 transitions. Word has length 45 [2022-01-10 20:02:33,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:33,051 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1379 transitions. [2022-01-10 20:02:33,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 20:02:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1379 transitions. [2022-01-10 20:02:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 20:02:33,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:33,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:33,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 20:02:33,053 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:33,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:33,054 INFO L85 PathProgramCache]: Analyzing trace with hash 315434581, now seen corresponding path program 1 times [2022-01-10 20:02:33,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:33,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130990034] [2022-01-10 20:02:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:33,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:33,111 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 20:02:33,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:33,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130990034] [2022-01-10 20:02:33,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130990034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:33,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:33,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:33,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201035363] [2022-01-10 20:02:33,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:33,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:33,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:33,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:33,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:33,113 INFO L87 Difference]: Start difference. First operand 966 states and 1379 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 20:02:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:33,170 INFO L93 Difference]: Finished difference Result 1854 states and 2591 transitions. [2022-01-10 20:02:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:33,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 20:02:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:33,177 INFO L225 Difference]: With dead ends: 1854 [2022-01-10 20:02:33,177 INFO L226 Difference]: Without dead ends: 1378 [2022-01-10 20:02:33,178 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 20:02:33,183 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 731 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:33,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 864 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-01-10 20:02:33,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1346. [2022-01-10 20:02:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1343 states have (on average 1.3991064780342517) internal successors, (1879), 1345 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states 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 20:02:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1879 transitions. [2022-01-10 20:02:33,236 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1879 transitions. Word has length 45 [2022-01-10 20:02:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:33,236 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 1879 transitions. [2022-01-10 20:02:33,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 20:02:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1879 transitions. [2022-01-10 20:02:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 20:02:33,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:33,237 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] [2022-01-10 20:02:33,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 20:02:33,238 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1724327377, now seen corresponding path program 1 times [2022-01-10 20:02:33,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:33,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410391219] [2022-01-10 20:02:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:33,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:33,294 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 20:02:33,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:33,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410391219] [2022-01-10 20:02:33,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410391219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:33,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:33,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:33,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652222836] [2022-01-10 20:02:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:33,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:33,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:33,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:33,296 INFO L87 Difference]: Start difference. First operand 1346 states and 1879 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:02:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:33,366 INFO L93 Difference]: Finished difference Result 2549 states and 3492 transitions. [2022-01-10 20:02:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:33,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 20:02:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:33,374 INFO L225 Difference]: With dead ends: 2549 [2022-01-10 20:02:33,374 INFO L226 Difference]: Without dead ends: 1665 [2022-01-10 20:02:33,376 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 20:02:33,376 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 728 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:33,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 868 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:33,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2022-01-10 20:02:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1643. [2022-01-10 20:02:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1640 states have (on average 1.3804878048780487) internal successors, (2264), 1642 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states 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 20:02:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2264 transitions. [2022-01-10 20:02:33,484 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2264 transitions. Word has length 51 [2022-01-10 20:02:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:33,487 INFO L470 AbstractCegarLoop]: Abstraction has 1643 states and 2264 transitions. [2022-01-10 20:02:33,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:02:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2264 transitions. [2022-01-10 20:02:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 20:02:33,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:33,491 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:02:33,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 20:02:33,491 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:33,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:33,491 INFO L85 PathProgramCache]: Analyzing trace with hash -464893902, now seen corresponding path program 1 times [2022-01-10 20:02:33,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:33,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250846238] [2022-01-10 20:02:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:33,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:02:33,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:33,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250846238] [2022-01-10 20:02:33,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250846238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:33,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:33,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:02:33,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820196546] [2022-01-10 20:02:33,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:33,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:02:33,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:33,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:02:33,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:33,592 INFO L87 Difference]: Start difference. First operand 1643 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:02:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:33,744 INFO L93 Difference]: Finished difference Result 3269 states and 4468 transitions. [2022-01-10 20:02:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:02:33,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 52 [2022-01-10 20:02:33,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:33,755 INFO L225 Difference]: With dead ends: 3269 [2022-01-10 20:02:33,755 INFO L226 Difference]: Without dead ends: 2318 [2022-01-10 20:02:33,757 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 20:02:33,758 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 395 mSDsluCounter, 2413 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:33,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 3181 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:33,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2022-01-10 20:02:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1667. [2022-01-10 20:02:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1664 states have (on average 1.3641826923076923) internal successors, (2270), 1666 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states 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 20:02:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2270 transitions. [2022-01-10 20:02:33,870 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2270 transitions. Word has length 52 [2022-01-10 20:02:33,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:33,871 INFO L470 AbstractCegarLoop]: Abstraction has 1667 states and 2270 transitions. [2022-01-10 20:02:33,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:02:33,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2270 transitions. [2022-01-10 20:02:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 20:02:33,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:33,872 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:02:33,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 20:02:33,873 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:33,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1485406353, now seen corresponding path program 1 times [2022-01-10 20:02:33,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:33,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338390112] [2022-01-10 20:02:33,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:33,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:02:33,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:33,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338390112] [2022-01-10 20:02:33,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338390112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:33,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:33,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:02:33,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784966315] [2022-01-10 20:02:33,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:33,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:02:33,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:02:33,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:33,950 INFO L87 Difference]: Start difference. First operand 1667 states and 2270 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:02:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:34,160 INFO L93 Difference]: Finished difference Result 3422 states and 4619 transitions. [2022-01-10 20:02:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:02:34,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 52 [2022-01-10 20:02:34,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:34,171 INFO L225 Difference]: With dead ends: 3422 [2022-01-10 20:02:34,171 INFO L226 Difference]: Without dead ends: 2257 [2022-01-10 20:02:34,174 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 20:02:34,175 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 354 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:34,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 3197 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-01-10 20:02:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 1685. [2022-01-10 20:02:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1682 states have (on average 1.3483947681331747) internal successors, (2268), 1684 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states 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 20:02:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2268 transitions. [2022-01-10 20:02:34,298 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2268 transitions. Word has length 52 [2022-01-10 20:02:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:34,299 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 2268 transitions. [2022-01-10 20:02:34,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:02:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2268 transitions. [2022-01-10 20:02:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 20:02:34,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:34,300 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:02:34,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 20:02:34,300 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1496722480, now seen corresponding path program 1 times [2022-01-10 20:02:34,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:34,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27314175] [2022-01-10 20:02:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:34,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:34,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:34,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27314175] [2022-01-10 20:02:34,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27314175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:34,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:34,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:02:34,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10853982] [2022-01-10 20:02:34,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:34,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:02:34,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:34,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:02:34,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:02:34,392 INFO L87 Difference]: Start difference. First operand 1685 states and 2268 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 20:02:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:34,594 INFO L93 Difference]: Finished difference Result 1917 states and 2568 transitions. [2022-01-10 20:02:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:02:34,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 20:02:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:34,602 INFO L225 Difference]: With dead ends: 1917 [2022-01-10 20:02:34,602 INFO L226 Difference]: Without dead ends: 1915 [2022-01-10 20:02:34,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:34,604 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 1595 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:34,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1595 Valid, 864 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2022-01-10 20:02:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1683. [2022-01-10 20:02:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1681 states have (on average 1.343842950624628) internal successors, (2259), 1682 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states 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 20:02:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2259 transitions. [2022-01-10 20:02:34,745 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2259 transitions. Word has length 52 [2022-01-10 20:02:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:34,747 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2259 transitions. [2022-01-10 20:02:34,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 20:02:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2259 transitions. [2022-01-10 20:02:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 20:02:34,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:34,748 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:02:34,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 20:02:34,749 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:34,749 INFO L85 PathProgramCache]: Analyzing trace with hash -846242096, now seen corresponding path program 1 times [2022-01-10 20:02:34,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:34,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409281627] [2022-01-10 20:02:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:34,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:34,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:34,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409281627] [2022-01-10 20:02:34,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409281627] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:02:34,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281001953] [2022-01-10 20:02:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:34,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:02:34,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:02:34,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:02:34,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 20:02:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:35,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:02:35,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:02:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:35,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:02:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:35,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281001953] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:02:35,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:02:35,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-10 20:02:35,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492005466] [2022-01-10 20:02:35,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:02:35,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 20:02:35,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 20:02:35,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:02:35,674 INFO L87 Difference]: Start difference. First operand 1683 states and 2259 transitions. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 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 20:02:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:36,190 INFO L93 Difference]: Finished difference Result 4040 states and 5359 transitions. [2022-01-10 20:02:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 20:02:36,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 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 53 [2022-01-10 20:02:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:36,205 INFO L225 Difference]: With dead ends: 4040 [2022-01-10 20:02:36,205 INFO L226 Difference]: Without dead ends: 4038 [2022-01-10 20:02:36,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:02:36,206 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 2039 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:36,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2039 Valid, 3906 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:36,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2022-01-10 20:02:36,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 2658. [2022-01-10 20:02:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2656 states have (on average 1.3328313253012047) internal successors, (3540), 2657 states have internal predecessors, (3540), 0 states have call successors, (0), 0 states 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 20:02:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3540 transitions. [2022-01-10 20:02:36,491 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3540 transitions. Word has length 53 [2022-01-10 20:02:36,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:36,491 INFO L470 AbstractCegarLoop]: Abstraction has 2658 states and 3540 transitions. [2022-01-10 20:02:36,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 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 20:02:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3540 transitions. [2022-01-10 20:02:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 20:02:36,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:36,493 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-01-10 20:02:36,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:02:36,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:02:36,709 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:36,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash 740016514, now seen corresponding path program 2 times [2022-01-10 20:02:36,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:36,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889485661] [2022-01-10 20:02:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:36,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:36,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:36,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889485661] [2022-01-10 20:02:36,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889485661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:36,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:36,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:36,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265792465] [2022-01-10 20:02:36,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:36,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:36,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:36,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:36,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:36,757 INFO L87 Difference]: Start difference. First operand 2658 states and 3540 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 20:02:36,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:36,940 INFO L93 Difference]: Finished difference Result 3752 states and 4985 transitions. [2022-01-10 20:02:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:36,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 20:02:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:36,949 INFO L225 Difference]: With dead ends: 3752 [2022-01-10 20:02:36,949 INFO L226 Difference]: Without dead ends: 2012 [2022-01-10 20:02:36,952 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 20:02:36,953 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 722 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:36,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 955 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:36,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2022-01-10 20:02:37,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1996. [2022-01-10 20:02:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1994 states have (on average 1.3219658976930793) internal successors, (2636), 1995 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states 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 20:02:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 2636 transitions. [2022-01-10 20:02:37,153 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 2636 transitions. Word has length 56 [2022-01-10 20:02:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:37,153 INFO L470 AbstractCegarLoop]: Abstraction has 1996 states and 2636 transitions. [2022-01-10 20:02:37,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 20:02:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 2636 transitions. [2022-01-10 20:02:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 20:02:37,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:37,155 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:37,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 20:02:37,155 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:37,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:37,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2140672030, now seen corresponding path program 1 times [2022-01-10 20:02:37,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:37,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188719431] [2022-01-10 20:02:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:37,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:37,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:37,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188719431] [2022-01-10 20:02:37,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188719431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:37,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:37,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:37,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497353478] [2022-01-10 20:02:37,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:37,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:37,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:37,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:37,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:37,190 INFO L87 Difference]: Start difference. First operand 1996 states and 2636 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 20:02:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:37,494 INFO L93 Difference]: Finished difference Result 4483 states and 5784 transitions. [2022-01-10 20:02:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:37,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-10 20:02:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:37,504 INFO L225 Difference]: With dead ends: 4483 [2022-01-10 20:02:37,505 INFO L226 Difference]: Without dead ends: 2381 [2022-01-10 20:02:37,508 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 20:02:37,509 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 89 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:37,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1620 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2022-01-10 20:02:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2381. [2022-01-10 20:02:37,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2379 states have (on average 1.3009667927700714) internal successors, (3095), 2380 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states 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 20:02:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3095 transitions. [2022-01-10 20:02:37,748 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3095 transitions. Word has length 60 [2022-01-10 20:02:37,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:37,749 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 3095 transitions. [2022-01-10 20:02:37,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 20:02:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3095 transitions. [2022-01-10 20:02:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 20:02:37,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:37,753 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:37,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 20:02:37,753 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:37,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:37,754 INFO L85 PathProgramCache]: Analyzing trace with hash 123377560, now seen corresponding path program 1 times [2022-01-10 20:02:37,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:37,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798397842] [2022-01-10 20:02:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:37,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:02:37,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:37,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798397842] [2022-01-10 20:02:37,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798397842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:37,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:37,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:37,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124389212] [2022-01-10 20:02:37,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:37,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:37,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:37,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:37,799 INFO L87 Difference]: Start difference. First operand 2381 states and 3095 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:38,041 INFO L93 Difference]: Finished difference Result 4244 states and 5447 transitions. [2022-01-10 20:02:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:38,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 20:02:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:38,050 INFO L225 Difference]: With dead ends: 4244 [2022-01-10 20:02:38,050 INFO L226 Difference]: Without dead ends: 2381 [2022-01-10 20:02:38,053 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 20:02:38,054 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 714 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:38,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 855 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2022-01-10 20:02:38,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2381. [2022-01-10 20:02:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2379 states have (on average 1.284153005464481) internal successors, (3055), 2380 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states 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 20:02:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3055 transitions. [2022-01-10 20:02:38,269 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3055 transitions. Word has length 68 [2022-01-10 20:02:38,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:38,270 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 3055 transitions. [2022-01-10 20:02:38,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:38,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3055 transitions. [2022-01-10 20:02:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 20:02:38,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:38,275 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:38,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 20:02:38,276 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1119565555, now seen corresponding path program 1 times [2022-01-10 20:02:38,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:38,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905165466] [2022-01-10 20:02:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:38,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:02:38,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:38,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905165466] [2022-01-10 20:02:38,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905165466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:38,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:38,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:38,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143841252] [2022-01-10 20:02:38,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:38,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:38,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:38,317 INFO L87 Difference]: Start difference. First operand 2381 states and 3055 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:38,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:38,553 INFO L93 Difference]: Finished difference Result 3680 states and 4689 transitions. [2022-01-10 20:02:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:38,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 20:02:38,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:38,561 INFO L225 Difference]: With dead ends: 3680 [2022-01-10 20:02:38,562 INFO L226 Difference]: Without dead ends: 2055 [2022-01-10 20:02:38,565 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 20:02:38,566 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 99 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:38,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 1607 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:38,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2022-01-10 20:02:38,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2053. [2022-01-10 20:02:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2051 states have (on average 1.2779132130667967) internal successors, (2621), 2052 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states 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 20:02:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2621 transitions. [2022-01-10 20:02:38,767 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2621 transitions. Word has length 69 [2022-01-10 20:02:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:38,767 INFO L470 AbstractCegarLoop]: Abstraction has 2053 states and 2621 transitions. [2022-01-10 20:02:38,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2621 transitions. [2022-01-10 20:02:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:38,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:38,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:38,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 20:02:38,770 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1277626173, now seen corresponding path program 1 times [2022-01-10 20:02:38,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:38,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213785419] [2022-01-10 20:02:38,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:38,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:38,811 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 20:02:38,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:38,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213785419] [2022-01-10 20:02:38,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213785419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:38,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:38,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:38,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034589087] [2022-01-10 20:02:38,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:38,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:38,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:38,814 INFO L87 Difference]: Start difference. First operand 2053 states and 2621 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:39,004 INFO L93 Difference]: Finished difference Result 2471 states and 3247 transitions. [2022-01-10 20:02:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:39,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:39,016 INFO L225 Difference]: With dead ends: 2471 [2022-01-10 20:02:39,016 INFO L226 Difference]: Without dead ends: 2053 [2022-01-10 20:02:39,018 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 20:02:39,018 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 631 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 898 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 20:02:39,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 898 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:39,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2022-01-10 20:02:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2053. [2022-01-10 20:02:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2051 states have (on average 1.2774256460263287) internal successors, (2620), 2052 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states 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 20:02:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2620 transitions. [2022-01-10 20:02:39,189 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2620 transitions. Word has length 77 [2022-01-10 20:02:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:39,189 INFO L470 AbstractCegarLoop]: Abstraction has 2053 states and 2620 transitions. [2022-01-10 20:02:39,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2620 transitions. [2022-01-10 20:02:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:39,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:39,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:39,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 20:02:39,192 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:39,192 INFO L85 PathProgramCache]: Analyzing trace with hash 392887396, now seen corresponding path program 1 times [2022-01-10 20:02:39,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:39,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843157856] [2022-01-10 20:02:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:39,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:39,225 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 20:02:39,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:39,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843157856] [2022-01-10 20:02:39,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843157856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:39,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:39,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:39,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828376586] [2022-01-10 20:02:39,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:39,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:39,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:39,229 INFO L87 Difference]: Start difference. First operand 2053 states and 2620 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:39,441 INFO L93 Difference]: Finished difference Result 2792 states and 3723 transitions. [2022-01-10 20:02:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:39,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:39,460 INFO L225 Difference]: With dead ends: 2792 [2022-01-10 20:02:39,460 INFO L226 Difference]: Without dead ends: 2376 [2022-01-10 20:02:39,461 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 20:02:39,462 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 700 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1289 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 20:02:39,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 1289 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:39,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2022-01-10 20:02:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2374. [2022-01-10 20:02:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.304806070826307) internal successors, (3095), 2373 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states 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 20:02:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3095 transitions. [2022-01-10 20:02:39,649 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3095 transitions. Word has length 77 [2022-01-10 20:02:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:39,650 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 3095 transitions. [2022-01-10 20:02:39,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3095 transitions. [2022-01-10 20:02:39,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:39,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:39,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:39,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 20:02:39,653 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:39,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:39,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2120579965, now seen corresponding path program 1 times [2022-01-10 20:02:39,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:39,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440573167] [2022-01-10 20:02:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:39,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:39,682 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 20:02:39,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:39,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440573167] [2022-01-10 20:02:39,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440573167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:39,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:39,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:39,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905855963] [2022-01-10 20:02:39,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:39,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:39,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:39,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:39,685 INFO L87 Difference]: Start difference. First operand 2374 states and 3095 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:39,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:39,865 INFO L93 Difference]: Finished difference Result 3110 states and 4192 transitions. [2022-01-10 20:02:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:39,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:39,870 INFO L225 Difference]: With dead ends: 3110 [2022-01-10 20:02:39,870 INFO L226 Difference]: Without dead ends: 2374 [2022-01-10 20:02:39,872 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 20:02:39,872 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 750 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 757 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 20:02:39,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 757 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:39,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-10 20:02:40,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2022-01-10 20:02:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.3014333895446881) internal successors, (3087), 2373 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states 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 20:02:40,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3087 transitions. [2022-01-10 20:02:40,051 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3087 transitions. Word has length 77 [2022-01-10 20:02:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:40,051 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 3087 transitions. [2022-01-10 20:02:40,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3087 transitions. [2022-01-10 20:02:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:40,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:40,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:40,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 20:02:40,054 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:40,054 INFO L85 PathProgramCache]: Analyzing trace with hash -883192989, now seen corresponding path program 1 times [2022-01-10 20:02:40,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:40,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805697818] [2022-01-10 20:02:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:40,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:40,084 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 20:02:40,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:40,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805697818] [2022-01-10 20:02:40,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805697818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:40,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:40,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:40,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875232418] [2022-01-10 20:02:40,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:40,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:40,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:40,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:40,086 INFO L87 Difference]: Start difference. First operand 2374 states and 3087 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:40,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:40,290 INFO L93 Difference]: Finished difference Result 3109 states and 4175 transitions. [2022-01-10 20:02:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:40,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:40,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:40,295 INFO L225 Difference]: With dead ends: 3109 [2022-01-10 20:02:40,295 INFO L226 Difference]: Without dead ends: 2374 [2022-01-10 20:02:40,296 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 20:02:40,297 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 744 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 752 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 20:02:40,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 752 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-10 20:02:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2022-01-10 20:02:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.298060708263069) internal successors, (3079), 2373 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states 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 20:02:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3079 transitions. [2022-01-10 20:02:40,486 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3079 transitions. Word has length 77 [2022-01-10 20:02:40,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:40,486 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 3079 transitions. [2022-01-10 20:02:40,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3079 transitions. [2022-01-10 20:02:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:40,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:40,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:40,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 20:02:40,490 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:40,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1813108605, now seen corresponding path program 1 times [2022-01-10 20:02:40,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:40,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260553903] [2022-01-10 20:02:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:40,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:40,520 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 20:02:40,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:40,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260553903] [2022-01-10 20:02:40,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260553903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:40,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:40,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:40,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19873931] [2022-01-10 20:02:40,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:40,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:40,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:40,523 INFO L87 Difference]: Start difference. First operand 2374 states and 3079 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:40,733 INFO L93 Difference]: Finished difference Result 3108 states and 4158 transitions. [2022-01-10 20:02:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:40,737 INFO L225 Difference]: With dead ends: 3108 [2022-01-10 20:02:40,737 INFO L226 Difference]: Without dead ends: 2374 [2022-01-10 20:02:40,738 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 20:02:40,739 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 738 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 747 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 20:02:40,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 747 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-10 20:02:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2022-01-10 20:02:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.2946880269814502) internal successors, (3071), 2373 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states 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 20:02:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3071 transitions. [2022-01-10 20:02:40,919 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3071 transitions. Word has length 77 [2022-01-10 20:02:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:40,919 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 3071 transitions. [2022-01-10 20:02:40,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3071 transitions. [2022-01-10 20:02:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:40,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:40,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:40,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 20:02:40,922 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash 235104099, now seen corresponding path program 1 times [2022-01-10 20:02:40,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:40,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085268779] [2022-01-10 20:02:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:40,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:40,951 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 20:02:40,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:40,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085268779] [2022-01-10 20:02:40,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085268779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:40,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:40,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:40,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803388697] [2022-01-10 20:02:40,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:40,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:40,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:40,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:40,954 INFO L87 Difference]: Start difference. First operand 2374 states and 3071 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:41,192 INFO L93 Difference]: Finished difference Result 3107 states and 4141 transitions. [2022-01-10 20:02:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:41,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:41,197 INFO L225 Difference]: With dead ends: 3107 [2022-01-10 20:02:41,198 INFO L226 Difference]: Without dead ends: 2374 [2022-01-10 20:02:41,200 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 20:02:41,201 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 732 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 742 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 20:02:41,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 742 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-10 20:02:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2022-01-10 20:02:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.2913153456998314) internal successors, (3063), 2373 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states 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 20:02:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3063 transitions. [2022-01-10 20:02:41,377 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3063 transitions. Word has length 77 [2022-01-10 20:02:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:41,377 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 3063 transitions. [2022-01-10 20:02:41,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3063 transitions. [2022-01-10 20:02:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:41,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:41,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:41,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 20:02:41,379 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1361392509, now seen corresponding path program 1 times [2022-01-10 20:02:41,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:41,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313843471] [2022-01-10 20:02:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:41,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:41,407 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 20:02:41,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:41,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313843471] [2022-01-10 20:02:41,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313843471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:41,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:41,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:41,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014375491] [2022-01-10 20:02:41,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:41,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:41,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:41,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:41,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:41,409 INFO L87 Difference]: Start difference. First operand 2374 states and 3063 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:41,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:41,638 INFO L93 Difference]: Finished difference Result 3106 states and 4124 transitions. [2022-01-10 20:02:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:41,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:41,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:41,642 INFO L225 Difference]: With dead ends: 3106 [2022-01-10 20:02:41,642 INFO L226 Difference]: Without dead ends: 2374 [2022-01-10 20:02:41,644 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 20:02:41,644 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 667 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:41,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 771 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-10 20:02:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2022-01-10 20:02:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.2828836424957841) internal successors, (3043), 2373 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states 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 20:02:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3043 transitions. [2022-01-10 20:02:41,814 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3043 transitions. Word has length 77 [2022-01-10 20:02:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:41,814 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 3043 transitions. [2022-01-10 20:02:41,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3043 transitions. [2022-01-10 20:02:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:41,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:41,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:41,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 20:02:41,816 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:41,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:41,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1367501342, now seen corresponding path program 1 times [2022-01-10 20:02:41,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:41,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893355881] [2022-01-10 20:02:41,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:41,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:41,842 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 20:02:41,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:41,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893355881] [2022-01-10 20:02:41,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893355881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:41,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:41,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:41,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36303752] [2022-01-10 20:02:41,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:41,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:41,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:41,844 INFO L87 Difference]: Start difference. First operand 2374 states and 3043 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:42,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:42,049 INFO L93 Difference]: Finished difference Result 3105 states and 4083 transitions. [2022-01-10 20:02:42,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:42,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:42,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:42,054 INFO L225 Difference]: With dead ends: 3105 [2022-01-10 20:02:42,054 INFO L226 Difference]: Without dead ends: 2374 [2022-01-10 20:02:42,056 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 20:02:42,056 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 655 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:42,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 758 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-10 20:02:42,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2022-01-10 20:02:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.2744519392917368) internal successors, (3023), 2373 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states 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 20:02:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3023 transitions. [2022-01-10 20:02:42,270 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3023 transitions. Word has length 77 [2022-01-10 20:02:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:42,270 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 3023 transitions. [2022-01-10 20:02:42,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3023 transitions. [2022-01-10 20:02:42,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:42,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:42,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:42,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 20:02:42,273 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash -179658559, now seen corresponding path program 1 times [2022-01-10 20:02:42,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:42,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655943716] [2022-01-10 20:02:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:42,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:42,298 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 20:02:42,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:42,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655943716] [2022-01-10 20:02:42,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655943716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:42,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:42,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:42,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920560735] [2022-01-10 20:02:42,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:42,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:42,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:42,300 INFO L87 Difference]: Start difference. First operand 2374 states and 3023 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:42,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:42,520 INFO L93 Difference]: Finished difference Result 3103 states and 4040 transitions. [2022-01-10 20:02:42,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:42,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:42,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:42,525 INFO L225 Difference]: With dead ends: 3103 [2022-01-10 20:02:42,525 INFO L226 Difference]: Without dead ends: 2374 [2022-01-10 20:02:42,527 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 20:02:42,527 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 642 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:42,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 745 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-10 20:02:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2022-01-10 20:02:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.2660202360876898) internal successors, (3003), 2373 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states 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 20:02:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3003 transitions. [2022-01-10 20:02:42,731 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3003 transitions. Word has length 77 [2022-01-10 20:02:42,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:42,731 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 3003 transitions. [2022-01-10 20:02:42,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3003 transitions. [2022-01-10 20:02:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:42,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:42,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:42,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 20:02:42,734 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash -821568992, now seen corresponding path program 1 times [2022-01-10 20:02:42,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:42,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619945288] [2022-01-10 20:02:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:42,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:42,762 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 20:02:42,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:42,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619945288] [2022-01-10 20:02:42,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619945288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:42,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:42,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:42,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68167449] [2022-01-10 20:02:42,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:42,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:42,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:42,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:42,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:42,763 INFO L87 Difference]: Start difference. First operand 2374 states and 3003 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:42,980 INFO L93 Difference]: Finished difference Result 3102 states and 3999 transitions. [2022-01-10 20:02:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:42,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:42,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:42,984 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 20:02:42,985 INFO L226 Difference]: Without dead ends: 2374 [2022-01-10 20:02:42,986 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 20:02:42,987 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 630 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:42,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 732 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-10 20:02:43,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2022-01-10 20:02:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.2575885328836425) internal successors, (2983), 2373 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states 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 20:02:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 2983 transitions. [2022-01-10 20:02:43,205 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 2983 transitions. Word has length 77 [2022-01-10 20:02:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:43,205 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 2983 transitions. [2022-01-10 20:02:43,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 2983 transitions. [2022-01-10 20:02:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:43,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:43,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:43,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 20:02:43,208 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:43,208 INFO L85 PathProgramCache]: Analyzing trace with hash -328212353, now seen corresponding path program 1 times [2022-01-10 20:02:43,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:43,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127918697] [2022-01-10 20:02:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:43,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:43,252 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 20:02:43,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:43,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127918697] [2022-01-10 20:02:43,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127918697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:43,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:43,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:02:43,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770160140] [2022-01-10 20:02:43,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:43,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:02:43,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:02:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:43,254 INFO L87 Difference]: Start difference. First operand 2374 states and 2983 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:43,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:43,586 INFO L93 Difference]: Finished difference Result 3473 states and 4479 transitions. [2022-01-10 20:02:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:02:43,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:43,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:43,591 INFO L225 Difference]: With dead ends: 3473 [2022-01-10 20:02:43,592 INFO L226 Difference]: Without dead ends: 2752 [2022-01-10 20:02:43,593 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 20:02:43,594 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 1546 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:43,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1935 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:02:43,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2022-01-10 20:02:43,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2380. [2022-01-10 20:02:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2378 states have (on average 1.251892346509672) internal successors, (2977), 2379 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states 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 20:02:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 2977 transitions. [2022-01-10 20:02:43,816 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 2977 transitions. Word has length 77 [2022-01-10 20:02:43,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:43,816 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 2977 transitions. [2022-01-10 20:02:43,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:43,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 2977 transitions. [2022-01-10 20:02:43,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:43,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:43,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:43,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 20:02:43,819 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:43,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:43,819 INFO L85 PathProgramCache]: Analyzing trace with hash 804978240, now seen corresponding path program 1 times [2022-01-10 20:02:43,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:43,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710545894] [2022-01-10 20:02:43,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:43,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:43,846 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 20:02:43,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:43,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710545894] [2022-01-10 20:02:43,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710545894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:43,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:43,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:43,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618733041] [2022-01-10 20:02:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:43,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:43,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:43,848 INFO L87 Difference]: Start difference. First operand 2380 states and 2977 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:44,135 INFO L93 Difference]: Finished difference Result 3695 states and 4715 transitions. [2022-01-10 20:02:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:44,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:44,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:44,141 INFO L225 Difference]: With dead ends: 3695 [2022-01-10 20:02:44,141 INFO L226 Difference]: Without dead ends: 2977 [2022-01-10 20:02:44,143 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 20:02:44,144 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 584 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:44,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1141 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2022-01-10 20:02:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2971. [2022-01-10 20:02:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2969 states have (on average 1.2613674637925227) internal successors, (3745), 2970 states have internal predecessors, (3745), 0 states have call successors, (0), 0 states 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 20:02:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 3745 transitions. [2022-01-10 20:02:44,377 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 3745 transitions. Word has length 77 [2022-01-10 20:02:44,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:44,377 INFO L470 AbstractCegarLoop]: Abstraction has 2971 states and 3745 transitions. [2022-01-10 20:02:44,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 3745 transitions. [2022-01-10 20:02:44,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:44,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:44,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:44,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 20:02:44,380 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:44,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash 604428095, now seen corresponding path program 1 times [2022-01-10 20:02:44,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:44,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338512064] [2022-01-10 20:02:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:44,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:44,415 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 20:02:44,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:44,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338512064] [2022-01-10 20:02:44,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338512064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:44,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:44,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:02:44,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55167433] [2022-01-10 20:02:44,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:44,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:02:44,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:44,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:02:44,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:44,417 INFO L87 Difference]: Start difference. First operand 2971 states and 3745 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:44,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:44,891 INFO L93 Difference]: Finished difference Result 5345 states and 6871 transitions. [2022-01-10 20:02:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:02:44,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:44,901 INFO L225 Difference]: With dead ends: 5345 [2022-01-10 20:02:44,901 INFO L226 Difference]: Without dead ends: 4040 [2022-01-10 20:02:44,905 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 20:02:44,906 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1511 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:44,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 3038 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:02:44,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2022-01-10 20:02:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3010. [2022-01-10 20:02:45,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 3008 states have (on average 1.2539893617021276) internal successors, (3772), 3009 states have internal predecessors, (3772), 0 states have call successors, (0), 0 states 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 20:02:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 3772 transitions. [2022-01-10 20:02:45,182 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 3772 transitions. Word has length 77 [2022-01-10 20:02:45,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:45,183 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 3772 transitions. [2022-01-10 20:02:45,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 3772 transitions. [2022-01-10 20:02:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:45,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:45,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:45,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 20:02:45,186 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash -318255488, now seen corresponding path program 1 times [2022-01-10 20:02:45,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:45,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793481689] [2022-01-10 20:02:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:45,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:45,228 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 20:02:45,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:45,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793481689] [2022-01-10 20:02:45,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793481689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:45,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:45,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:02:45,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10190647] [2022-01-10 20:02:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:45,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:02:45,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:02:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:45,230 INFO L87 Difference]: Start difference. First operand 3010 states and 3772 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:45,605 INFO L93 Difference]: Finished difference Result 4935 states and 6294 transitions. [2022-01-10 20:02:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:02:45,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:45,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:45,613 INFO L225 Difference]: With dead ends: 4935 [2022-01-10 20:02:45,613 INFO L226 Difference]: Without dead ends: 3598 [2022-01-10 20:02:45,616 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 20:02:45,617 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 1264 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:45,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1264 Valid, 2305 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:02:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2022-01-10 20:02:45,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3016. [2022-01-10 20:02:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 3014 states have (on average 1.245852687458527) internal successors, (3755), 3015 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states 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 20:02:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 3755 transitions. [2022-01-10 20:02:45,894 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 3755 transitions. Word has length 77 [2022-01-10 20:02:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:45,894 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 3755 transitions. [2022-01-10 20:02:45,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 3755 transitions. [2022-01-10 20:02:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:45,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:45,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:45,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 20:02:45,896 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:45,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:45,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1793034881, now seen corresponding path program 1 times [2022-01-10 20:02:45,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:45,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048974034] [2022-01-10 20:02:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:45,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:45,931 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 20:02:45,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:45,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048974034] [2022-01-10 20:02:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048974034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:45,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:45,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:45,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351182273] [2022-01-10 20:02:45,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:45,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:45,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:45,933 INFO L87 Difference]: Start difference. First operand 3016 states and 3755 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:46,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:46,275 INFO L93 Difference]: Finished difference Result 4355 states and 5462 transitions. [2022-01-10 20:02:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:46,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:46,286 INFO L225 Difference]: With dead ends: 4355 [2022-01-10 20:02:46,286 INFO L226 Difference]: Without dead ends: 2983 [2022-01-10 20:02:46,288 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 20:02:46,289 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 559 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:46,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 695 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2022-01-10 20:02:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 2983. [2022-01-10 20:02:46,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2981 states have (on average 1.2364978195236498) internal successors, (3686), 2982 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states 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 20:02:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 3686 transitions. [2022-01-10 20:02:46,566 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 3686 transitions. Word has length 77 [2022-01-10 20:02:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:46,567 INFO L470 AbstractCegarLoop]: Abstraction has 2983 states and 3686 transitions. [2022-01-10 20:02:46,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 3686 transitions. [2022-01-10 20:02:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:02:46,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:46,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:46,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 20:02:46,570 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:46,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash 795962528, now seen corresponding path program 1 times [2022-01-10 20:02:46,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:46,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732760939] [2022-01-10 20:02:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:46,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:46,627 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 20:02:46,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:46,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732760939] [2022-01-10 20:02:46,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732760939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:46,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:46,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:46,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100467208] [2022-01-10 20:02:46,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:46,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:46,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:46,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:46,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:46,629 INFO L87 Difference]: Start difference. First operand 2983 states and 3686 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:47,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:47,005 INFO L93 Difference]: Finished difference Result 5558 states and 6927 transitions. [2022-01-10 20:02:47,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:47,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:02:47,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:47,010 INFO L225 Difference]: With dead ends: 5558 [2022-01-10 20:02:47,011 INFO L226 Difference]: Without dead ends: 4223 [2022-01-10 20:02:47,013 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 20:02:47,013 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 565 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:47,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 1092 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2022-01-10 20:02:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 4089. [2022-01-10 20:02:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4089 states, 4087 states have (on average 1.2380719354049425) internal successors, (5060), 4088 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states 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 20:02:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5060 transitions. [2022-01-10 20:02:47,392 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5060 transitions. Word has length 77 [2022-01-10 20:02:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:47,392 INFO L470 AbstractCegarLoop]: Abstraction has 4089 states and 5060 transitions. [2022-01-10 20:02:47,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5060 transitions. [2022-01-10 20:02:47,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 20:02:47,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:47,395 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-01-10 20:02:47,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 20:02:47,395 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:47,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1173715313, now seen corresponding path program 1 times [2022-01-10 20:02:47,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:47,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700547177] [2022-01-10 20:02:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:47,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 20:02:47,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:47,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700547177] [2022-01-10 20:02:47,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700547177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:47,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:47,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:47,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522965941] [2022-01-10 20:02:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:47,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:47,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:47,422 INFO L87 Difference]: Start difference. First operand 4089 states and 5060 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:47,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:47,873 INFO L93 Difference]: Finished difference Result 5733 states and 7164 transitions. [2022-01-10 20:02:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:47,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-10 20:02:47,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:47,880 INFO L225 Difference]: With dead ends: 5733 [2022-01-10 20:02:47,881 INFO L226 Difference]: Without dead ends: 4365 [2022-01-10 20:02:47,884 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 20:02:47,885 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 637 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:47,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 745 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:47,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4365 states. [2022-01-10 20:02:48,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4365 to 4326. [2022-01-10 20:02:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4324 states have (on average 1.2483811285846438) internal successors, (5398), 4325 states have internal predecessors, (5398), 0 states have call successors, (0), 0 states 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 20:02:48,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 5398 transitions. [2022-01-10 20:02:48,300 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 5398 transitions. Word has length 100 [2022-01-10 20:02:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:48,300 INFO L470 AbstractCegarLoop]: Abstraction has 4326 states and 5398 transitions. [2022-01-10 20:02:48,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:48,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 5398 transitions. [2022-01-10 20:02:48,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 20:02:48,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:48,303 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:48,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 20:02:48,304 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:48,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:48,304 INFO L85 PathProgramCache]: Analyzing trace with hash -109350397, now seen corresponding path program 1 times [2022-01-10 20:02:48,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:48,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197591230] [2022-01-10 20:02:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:48,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 20:02:48,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:48,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197591230] [2022-01-10 20:02:48,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197591230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:48,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:48,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:48,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064498972] [2022-01-10 20:02:48,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:48,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:48,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:48,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:48,347 INFO L87 Difference]: Start difference. First operand 4326 states and 5398 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 20:02:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:48,775 INFO L93 Difference]: Finished difference Result 6503 states and 8199 transitions. [2022-01-10 20:02:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:48,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 110 [2022-01-10 20:02:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:48,781 INFO L225 Difference]: With dead ends: 6503 [2022-01-10 20:02:48,781 INFO L226 Difference]: Without dead ends: 4902 [2022-01-10 20:02:48,785 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 20:02:48,785 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 610 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:48,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 667 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:48,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4902 states. [2022-01-10 20:02:49,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4902 to 4902. [2022-01-10 20:02:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4900 states have (on average 1.246122448979592) internal successors, (6106), 4901 states have internal predecessors, (6106), 0 states have call successors, (0), 0 states 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 20:02:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 6106 transitions. [2022-01-10 20:02:49,284 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 6106 transitions. Word has length 110 [2022-01-10 20:02:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:49,284 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 6106 transitions. [2022-01-10 20:02:49,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 20:02:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 6106 transitions. [2022-01-10 20:02:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 20:02:49,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:49,287 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:49,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 20:02:49,288 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash 131189732, now seen corresponding path program 1 times [2022-01-10 20:02:49,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:49,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631708152] [2022-01-10 20:02:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:49,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 20:02:49,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:49,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631708152] [2022-01-10 20:02:49,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631708152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:49,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:49,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:49,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676470342] [2022-01-10 20:02:49,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:49,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:49,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:49,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:49,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:49,332 INFO L87 Difference]: Start difference. First operand 4902 states and 6106 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 20:02:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:49,631 INFO L93 Difference]: Finished difference Result 5665 states and 7051 transitions. [2022-01-10 20:02:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:49,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 110 [2022-01-10 20:02:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:49,635 INFO L225 Difference]: With dead ends: 5665 [2022-01-10 20:02:49,636 INFO L226 Difference]: Without dead ends: 3488 [2022-01-10 20:02:49,639 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 20:02:49,640 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 69 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:49,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1180 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2022-01-10 20:02:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3488. [2022-01-10 20:02:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 3486 states have (on average 1.2326448651749857) internal successors, (4297), 3487 states have internal predecessors, (4297), 0 states have call successors, (0), 0 states 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 20:02:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 4297 transitions. [2022-01-10 20:02:49,904 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 4297 transitions. Word has length 110 [2022-01-10 20:02:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:49,904 INFO L470 AbstractCegarLoop]: Abstraction has 3488 states and 4297 transitions. [2022-01-10 20:02:49,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 20:02:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 4297 transitions. [2022-01-10 20:02:49,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 20:02:49,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:49,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:49,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 20:02:49,907 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:49,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:49,907 INFO L85 PathProgramCache]: Analyzing trace with hash -495425030, now seen corresponding path program 1 times [2022-01-10 20:02:49,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:49,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041303265] [2022-01-10 20:02:49,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:49,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 20:02:49,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:49,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041303265] [2022-01-10 20:02:49,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041303265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:49,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:49,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:49,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130801035] [2022-01-10 20:02:49,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:49,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:49,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:49,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:49,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:49,950 INFO L87 Difference]: Start difference. First operand 3488 states and 4297 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 20:02:50,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:50,270 INFO L93 Difference]: Finished difference Result 4260 states and 5241 transitions. [2022-01-10 20:02:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:50,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 113 [2022-01-10 20:02:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:50,276 INFO L225 Difference]: With dead ends: 4260 [2022-01-10 20:02:50,276 INFO L226 Difference]: Without dead ends: 3497 [2022-01-10 20:02:50,277 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 20:02:50,278 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 60 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:50,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1184 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2022-01-10 20:02:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3497. [2022-01-10 20:02:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3497 states, 3495 states have (on average 1.2280400572246066) internal successors, (4292), 3496 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states 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 20:02:50,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 4292 transitions. [2022-01-10 20:02:50,527 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 4292 transitions. Word has length 113 [2022-01-10 20:02:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:50,527 INFO L470 AbstractCegarLoop]: Abstraction has 3497 states and 4292 transitions. [2022-01-10 20:02:50,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 20:02:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 4292 transitions. [2022-01-10 20:02:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 20:02:50,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:50,530 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:50,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 20:02:50,530 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:50,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash -944121669, now seen corresponding path program 1 times [2022-01-10 20:02:50,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:50,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538434149] [2022-01-10 20:02:50,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:50,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 20:02:50,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:50,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538434149] [2022-01-10 20:02:50,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538434149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:50,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:50,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:50,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029174202] [2022-01-10 20:02:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:50,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:50,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:50,573 INFO L87 Difference]: Start difference. First operand 3497 states and 4292 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 20:02:50,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:50,883 INFO L93 Difference]: Finished difference Result 3892 states and 4755 transitions. [2022-01-10 20:02:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:50,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 113 [2022-01-10 20:02:50,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:50,888 INFO L225 Difference]: With dead ends: 3892 [2022-01-10 20:02:50,888 INFO L226 Difference]: Without dead ends: 2464 [2022-01-10 20:02:50,889 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 20:02:50,890 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 595 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:50,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 662 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-01-10 20:02:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2464. [2022-01-10 20:02:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 1.2505075111652457) internal successors, (3080), 2463 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 20:02:51,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3080 transitions. [2022-01-10 20:02:51,080 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3080 transitions. Word has length 113 [2022-01-10 20:02:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:51,080 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 3080 transitions. [2022-01-10 20:02:51,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 20:02:51,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3080 transitions. [2022-01-10 20:02:51,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 20:02:51,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:51,082 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:51,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 20:02:51,083 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:51,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:51,083 INFO L85 PathProgramCache]: Analyzing trace with hash 439314692, now seen corresponding path program 1 times [2022-01-10 20:02:51,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:51,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486164783] [2022-01-10 20:02:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:51,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:51,122 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 20:02:51,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:51,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486164783] [2022-01-10 20:02:51,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486164783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:51,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:51,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:51,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206835911] [2022-01-10 20:02:51,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:51,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:51,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:51,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:51,125 INFO L87 Difference]: Start difference. First operand 2464 states and 3080 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:51,546 INFO L93 Difference]: Finished difference Result 7176 states and 8994 transitions. [2022-01-10 20:02:51,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:51,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 20:02:51,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:51,554 INFO L225 Difference]: With dead ends: 7176 [2022-01-10 20:02:51,554 INFO L226 Difference]: Without dead ends: 4741 [2022-01-10 20:02:51,558 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 20:02:51,558 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 448 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:51,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 960 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:51,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4741 states. [2022-01-10 20:02:51,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4741 to 4499. [2022-01-10 20:02:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 4498 states have (on average 1.248999555357937) internal successors, (5618), 4498 states have internal predecessors, (5618), 0 states have call successors, (0), 0 states 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 20:02:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 5618 transitions. [2022-01-10 20:02:51,913 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 5618 transitions. Word has length 124 [2022-01-10 20:02:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:51,913 INFO L470 AbstractCegarLoop]: Abstraction has 4499 states and 5618 transitions. [2022-01-10 20:02:51,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 5618 transitions. [2022-01-10 20:02:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 20:02:51,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:51,916 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:51,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 20:02:51,916 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash 987034661, now seen corresponding path program 1 times [2022-01-10 20:02:51,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:51,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683281571] [2022-01-10 20:02:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:51,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:51,955 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 20:02:51,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:51,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683281571] [2022-01-10 20:02:51,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683281571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:51,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:51,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:51,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77714178] [2022-01-10 20:02:51,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:51,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:51,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:51,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:51,957 INFO L87 Difference]: Start difference. First operand 4499 states and 5618 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:52,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:52,655 INFO L93 Difference]: Finished difference Result 13117 states and 16260 transitions. [2022-01-10 20:02:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:52,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 20:02:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:52,665 INFO L225 Difference]: With dead ends: 13117 [2022-01-10 20:02:52,666 INFO L226 Difference]: Without dead ends: 8683 [2022-01-10 20:02:52,670 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 20:02:52,671 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 454 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:52,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 1162 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:52,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8683 states. [2022-01-10 20:02:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8683 to 8473. [2022-01-10 20:02:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8473 states, 8472 states have (on average 1.2282813975448537) internal successors, (10406), 8472 states have internal predecessors, (10406), 0 states have call successors, (0), 0 states 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 20:02:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8473 states to 8473 states and 10406 transitions. [2022-01-10 20:02:53,344 INFO L78 Accepts]: Start accepts. Automaton has 8473 states and 10406 transitions. Word has length 124 [2022-01-10 20:02:53,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:53,344 INFO L470 AbstractCegarLoop]: Abstraction has 8473 states and 10406 transitions. [2022-01-10 20:02:53,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:53,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states and 10406 transitions. [2022-01-10 20:02:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 20:02:53,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:53,347 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:53,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 20:02:53,348 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash -463132990, now seen corresponding path program 1 times [2022-01-10 20:02:53,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:53,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171432583] [2022-01-10 20:02:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:53,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:53,380 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 20:02:53,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:53,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171432583] [2022-01-10 20:02:53,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171432583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:53,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:53,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:53,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673476585] [2022-01-10 20:02:53,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:53,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:53,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:53,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:53,384 INFO L87 Difference]: Start difference. First operand 8473 states and 10406 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:54,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:54,056 INFO L93 Difference]: Finished difference Result 16855 states and 20710 transitions. [2022-01-10 20:02:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:54,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 20:02:54,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:54,068 INFO L225 Difference]: With dead ends: 16855 [2022-01-10 20:02:54,069 INFO L226 Difference]: Without dead ends: 8415 [2022-01-10 20:02:54,078 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 20:02:54,079 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 524 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 530 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 20:02:54,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 530 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:54,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8415 states. [2022-01-10 20:02:54,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8415 to 8415. [2022-01-10 20:02:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8415 states, 8414 states have (on average 1.2290230568100784) internal successors, (10341), 8414 states have internal predecessors, (10341), 0 states have call successors, (0), 0 states 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 20:02:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8415 states to 8415 states and 10341 transitions. [2022-01-10 20:02:54,823 INFO L78 Accepts]: Start accepts. Automaton has 8415 states and 10341 transitions. Word has length 124 [2022-01-10 20:02:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:54,823 INFO L470 AbstractCegarLoop]: Abstraction has 8415 states and 10341 transitions. [2022-01-10 20:02:54,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:54,823 INFO L276 IsEmpty]: Start isEmpty. Operand 8415 states and 10341 transitions. [2022-01-10 20:02:54,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 20:02:54,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:54,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:54,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 20:02:54,826 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:54,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:54,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1666952802, now seen corresponding path program 1 times [2022-01-10 20:02:54,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:54,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581831693] [2022-01-10 20:02:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:54,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:54,868 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 20:02:54,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:54,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581831693] [2022-01-10 20:02:54,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581831693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:54,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:54,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:54,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797131826] [2022-01-10 20:02:54,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:54,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:54,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:54,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:54,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:54,870 INFO L87 Difference]: Start difference. First operand 8415 states and 10341 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:56,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:56,037 INFO L93 Difference]: Finished difference Result 24324 states and 29805 transitions. [2022-01-10 20:02:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:56,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 20:02:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:56,057 INFO L225 Difference]: With dead ends: 24324 [2022-01-10 20:02:56,058 INFO L226 Difference]: Without dead ends: 15974 [2022-01-10 20:02:56,065 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 20:02:56,065 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 351 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1226 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 20:02:56,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1226 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:56,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15974 states. [2022-01-10 20:02:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15974 to 15972. [2022-01-10 20:02:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15972 states, 15971 states have (on average 1.2181453885166864) internal successors, (19455), 15971 states have internal predecessors, (19455), 0 states have call successors, (0), 0 states 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 20:02:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15972 states to 15972 states and 19455 transitions. [2022-01-10 20:02:57,303 INFO L78 Accepts]: Start accepts. Automaton has 15972 states and 19455 transitions. Word has length 125 [2022-01-10 20:02:57,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:57,304 INFO L470 AbstractCegarLoop]: Abstraction has 15972 states and 19455 transitions. [2022-01-10 20:02:57,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 15972 states and 19455 transitions. [2022-01-10 20:02:57,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 20:02:57,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:57,309 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:57,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 20:02:57,309 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:57,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:57,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1401768703, now seen corresponding path program 1 times [2022-01-10 20:02:57,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:57,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830548660] [2022-01-10 20:02:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:57,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:57,338 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 20:02:57,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:57,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830548660] [2022-01-10 20:02:57,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830548660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:57,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:57,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:57,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931981075] [2022-01-10 20:02:57,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:57,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:57,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:57,340 INFO L87 Difference]: Start difference. First operand 15972 states and 19455 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:58,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:58,418 INFO L93 Difference]: Finished difference Result 28064 states and 34192 transitions. [2022-01-10 20:02:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:58,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 20:02:58,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:58,434 INFO L225 Difference]: With dead ends: 28064 [2022-01-10 20:02:58,434 INFO L226 Difference]: Without dead ends: 12157 [2022-01-10 20:02:58,450 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 20:02:58,451 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 522 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 529 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 20:02:58,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 529 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:58,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12157 states. [2022-01-10 20:02:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12157 to 12157. [2022-01-10 20:02:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12157 states, 12156 states have (on average 1.2181638696939783) internal successors, (14808), 12156 states have internal predecessors, (14808), 0 states have call successors, (0), 0 states 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 20:02:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12157 states to 12157 states and 14808 transitions. [2022-01-10 20:02:59,388 INFO L78 Accepts]: Start accepts. Automaton has 12157 states and 14808 transitions. Word has length 125 [2022-01-10 20:02:59,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:59,388 INFO L470 AbstractCegarLoop]: Abstraction has 12157 states and 14808 transitions. [2022-01-10 20:02:59,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 12157 states and 14808 transitions. [2022-01-10 20:02:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 20:02:59,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:59,392 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:59,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-10 20:02:59,392 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:02:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1515554928, now seen corresponding path program 1 times [2022-01-10 20:02:59,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:59,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373625619] [2022-01-10 20:02:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:59,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:59,445 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 20:02:59,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:59,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373625619] [2022-01-10 20:02:59,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373625619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:59,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:59,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:59,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076133606] [2022-01-10 20:02:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:59,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:59,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:59,447 INFO L87 Difference]: Start difference. First operand 12157 states and 14808 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:01,014 INFO L93 Difference]: Finished difference Result 34373 states and 41830 transitions. [2022-01-10 20:03:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 20:03:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:01,042 INFO L225 Difference]: With dead ends: 34373 [2022-01-10 20:03:01,042 INFO L226 Difference]: Without dead ends: 22281 [2022-01-10 20:03:01,059 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 20:03:01,059 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 356 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1223 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 20:03:01,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1223 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:01,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22281 states. [2022-01-10 20:03:02,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22281 to 22279. [2022-01-10 20:03:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22279 states, 22278 states have (on average 1.2128557321123978) internal successors, (27020), 22278 states have internal predecessors, (27020), 0 states have call successors, (0), 0 states 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 20:03:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22279 states to 22279 states and 27020 transitions. [2022-01-10 20:03:02,938 INFO L78 Accepts]: Start accepts. Automaton has 22279 states and 27020 transitions. Word has length 126 [2022-01-10 20:03:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:02,939 INFO L470 AbstractCegarLoop]: Abstraction has 22279 states and 27020 transitions. [2022-01-10 20:03:02,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 22279 states and 27020 transitions. [2022-01-10 20:03:02,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 20:03:02,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:02,944 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:03:02,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-10 20:03:02,945 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:03:02,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1553166577, now seen corresponding path program 1 times [2022-01-10 20:03:02,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:02,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514497482] [2022-01-10 20:03:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:02,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:02,971 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 20:03:02,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:02,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514497482] [2022-01-10 20:03:02,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514497482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:02,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:02,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:03:02,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548096774] [2022-01-10 20:03:02,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:02,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:03:02,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:03:02,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:02,973 INFO L87 Difference]: Start difference. First operand 22279 states and 27020 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:04,712 INFO L93 Difference]: Finished difference Result 44437 states and 53909 transitions. [2022-01-10 20:03:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:04,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 20:03:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:04,739 INFO L225 Difference]: With dead ends: 44437 [2022-01-10 20:03:04,740 INFO L226 Difference]: Without dead ends: 22223 [2022-01-10 20:03:04,759 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 20:03:04,759 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 520 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 528 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 20:03:04,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 528 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22223 states. [2022-01-10 20:03:06,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22223 to 22223. [2022-01-10 20:03:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22223 states, 22222 states have (on average 1.2131671316713166) internal successors, (26959), 22222 states have internal predecessors, (26959), 0 states have call successors, (0), 0 states 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 20:03:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22223 states to 22223 states and 26959 transitions. [2022-01-10 20:03:06,487 INFO L78 Accepts]: Start accepts. Automaton has 22223 states and 26959 transitions. Word has length 126 [2022-01-10 20:03:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:06,488 INFO L470 AbstractCegarLoop]: Abstraction has 22223 states and 26959 transitions. [2022-01-10 20:03:06,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 22223 states and 26959 transitions. [2022-01-10 20:03:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 20:03:06,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:06,494 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:03:06,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-10 20:03:06,494 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:03:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1174206317, now seen corresponding path program 1 times [2022-01-10 20:03:06,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:06,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148185358] [2022-01-10 20:03:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:06,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:06,533 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 20:03:06,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:06,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148185358] [2022-01-10 20:03:06,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148185358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:06,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:06,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:03:06,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151760039] [2022-01-10 20:03:06,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:06,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:03:06,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:03:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:06,535 INFO L87 Difference]: Start difference. First operand 22223 states and 26959 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:09,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:09,834 INFO L93 Difference]: Finished difference Result 62779 states and 76049 transitions. [2022-01-10 20:03:09,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:09,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 20:03:09,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:09,892 INFO L225 Difference]: With dead ends: 62779 [2022-01-10 20:03:09,892 INFO L226 Difference]: Without dead ends: 40621 [2022-01-10 20:03:09,916 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 20:03:09,916 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 455 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:03:09,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 966 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40621 states. [2022-01-10 20:03:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40621 to 40235. [2022-01-10 20:03:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40235 states, 40234 states have (on average 1.2093005915394939) internal successors, (48655), 40234 states have internal predecessors, (48655), 0 states have call successors, (0), 0 states 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 20:03:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40235 states to 40235 states and 48655 transitions. [2022-01-10 20:03:13,227 INFO L78 Accepts]: Start accepts. Automaton has 40235 states and 48655 transitions. Word has length 127 [2022-01-10 20:03:13,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:13,228 INFO L470 AbstractCegarLoop]: Abstraction has 40235 states and 48655 transitions. [2022-01-10 20:03:13,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 40235 states and 48655 transitions. [2022-01-10 20:03:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 20:03:13,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:13,238 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:03:13,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-10 20:03:13,238 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:03:13,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1358247362, now seen corresponding path program 1 times [2022-01-10 20:03:13,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:13,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587179630] [2022-01-10 20:03:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:13,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:13,284 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 20:03:13,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:13,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587179630] [2022-01-10 20:03:13,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587179630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:13,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:13,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:03:13,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721565853] [2022-01-10 20:03:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:13,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:03:13,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:13,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:03:13,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:13,286 INFO L87 Difference]: Start difference. First operand 40235 states and 48655 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:19,335 INFO L93 Difference]: Finished difference Result 116104 states and 140239 transitions. [2022-01-10 20:03:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:19,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-10 20:03:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:19,418 INFO L225 Difference]: With dead ends: 116104 [2022-01-10 20:03:19,419 INFO L226 Difference]: Without dead ends: 58275 [2022-01-10 20:03:19,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:19,463 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 450 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:03:19,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 1484 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58275 states. [2022-01-10 20:03:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58275 to 58275. [2022-01-10 20:03:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58275 states, 58274 states have (on average 1.2038645021793595) internal successors, (70154), 58274 states have internal predecessors, (70154), 0 states have call successors, (0), 0 states 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 20:03:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58275 states to 58275 states and 70154 transitions. [2022-01-10 20:03:24,449 INFO L78 Accepts]: Start accepts. Automaton has 58275 states and 70154 transitions. Word has length 128 [2022-01-10 20:03:24,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:24,449 INFO L470 AbstractCegarLoop]: Abstraction has 58275 states and 70154 transitions. [2022-01-10 20:03:24,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:24,450 INFO L276 IsEmpty]: Start isEmpty. Operand 58275 states and 70154 transitions. [2022-01-10 20:03:24,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 20:03:24,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:24,475 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 20:03:24,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-10 20:03:24,475 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:03:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash -334648238, now seen corresponding path program 1 times [2022-01-10 20:03:24,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:24,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401611699] [2022-01-10 20:03:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:24,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:24,528 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 20:03:24,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:24,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401611699] [2022-01-10 20:03:24,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401611699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:24,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:24,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:03:24,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436720994] [2022-01-10 20:03:24,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:24,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:03:24,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:24,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:03:24,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:24,531 INFO L87 Difference]: Start difference. First operand 58275 states and 70154 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)